1902 lines
68 KiB
Plaintext
1902 lines
68 KiB
Plaintext
# 2010 July 16
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#
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# The author disclaims copyright to this source code. In place of
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# a legal notice, here is a blessing:
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#
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# May you do good and not evil.
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# May you find forgiveness for yourself and forgive others.
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# May you share freely, never taking more than you give.
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#
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#***********************************************************************
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#
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# This file implements tests to verify that the "testable statements" in
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# the lang_expr.html document are correct.
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#
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set testdir [file dirname $argv0]
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source $testdir/tester.tcl
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source $testdir/malloc_common.tcl
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ifcapable !compound {
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finish_test
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return
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}
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proc do_expr_test {tn expr type value} {
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uplevel do_execsql_test $tn [list "SELECT typeof($expr), $expr"] [
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list [list $type $value]
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]
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}
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proc do_qexpr_test {tn expr value} {
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uplevel do_execsql_test $tn [list "SELECT quote($expr)"] [list $value]
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}
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# Set up three global variables:
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#
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# ::opname An array mapping from SQL operator to an easy to parse
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# name. The names are used as part of test case names.
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#
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# ::opprec An array mapping from SQL operator to a numeric
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# precedence value. Operators that group more tightly
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# have lower numeric precedences.
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#
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# ::oplist A list of all SQL operators supported by SQLite.
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#
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foreach {op opn} {
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|| cat * mul / div % mod + add
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- sub << lshift >> rshift & bitand | bitor
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< less <= lesseq > more >= moreeq = eq1
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== eq2 <> ne1 != ne2 IS is LIKE like
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GLOB glob AND and OR or MATCH match REGEXP regexp
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{IS NOT} isnt
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} {
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set ::opname($op) $opn
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}
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set oplist [list]
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foreach {prec opl} {
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1 ||
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2 {* / %}
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3 {+ -}
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4 {<< >> & |}
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5 {< <= > >=}
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6 {= == != <> IS {IS NOT} LIKE GLOB MATCH REGEXP}
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7 AND
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8 OR
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} {
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foreach op $opl {
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set ::opprec($op) $prec
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lappend oplist $op
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}
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}
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# Hook in definitions of MATCH and REGEX. The following implementations
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# cause MATCH and REGEX to behave similarly to the == operator.
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#
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proc matchfunc {a b} { return [expr {$a==$b}] }
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proc regexfunc {a b} { return [expr {$a==$b}] }
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db func match -argcount 2 matchfunc
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db func regexp -argcount 2 regexfunc
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#-------------------------------------------------------------------------
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# Test cases e_expr-1.* attempt to verify that all binary operators listed
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# in the documentation exist and that the relative precedences of the
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# operators are also as the documentation suggests.
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#
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# EVIDENCE-OF: R-15514-65163 SQLite understands the following binary
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# operators, in order from highest to lowest precedence: || * / % + -
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# << >> & | < <= > >= = == != <> IS IS
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# NOT IN LIKE GLOB MATCH REGEXP AND OR
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#
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# EVIDENCE-OF: R-38759-38789 Operators IS and IS NOT have the same
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# precedence as =.
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#
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unset -nocomplain untested
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foreach op1 $oplist {
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foreach op2 $oplist {
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set untested($op1,$op2) 1
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foreach {tn A B C} {
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1 22 45 66
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2 0 0 0
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3 0 0 1
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4 0 1 0
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5 0 1 1
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6 1 0 0
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7 1 0 1
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8 1 1 0
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9 1 1 1
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10 5 6 1
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11 1 5 6
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12 1 5 5
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13 5 5 1
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14 5 2 1
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15 1 4 1
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16 -1 0 1
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17 0 1 -1
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} {
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set testname "e_expr-1.$opname($op1).$opname($op2).$tn"
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# If $op2 groups more tightly than $op1, then the result
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# of executing $sql1 whould be the same as executing $sql3.
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# If $op1 groups more tightly, or if $op1 and $op2 have
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# the same precedence, then executing $sql1 should return
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# the same value as $sql2.
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#
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set sql1 "SELECT $A $op1 $B $op2 $C"
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set sql2 "SELECT ($A $op1 $B) $op2 $C"
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set sql3 "SELECT $A $op1 ($B $op2 $C)"
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set a2 [db one $sql2]
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set a3 [db one $sql3]
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do_execsql_test $testname $sql1 [list [
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if {$opprec($op2) < $opprec($op1)} {set a3} {set a2}
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]]
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if {$a2 != $a3} { unset -nocomplain untested($op1,$op2) }
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}
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}
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}
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foreach op {* AND OR + || & |} { unset untested($op,$op) }
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unset untested(+,-) ;# Since (a+b)-c == a+(b-c)
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unset untested(*,<<) ;# Since (a*b)<<c == a*(b<<c)
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do_test e_expr-1.1 { array names untested } {}
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# At one point, test 1.2.2 was failing. Instead of the correct result, it
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# was returning {1 1 0}. This would seem to indicate that LIKE has the
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# same precedence as '<'. Which is incorrect. It has lower precedence.
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#
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do_execsql_test e_expr-1.2.1 {
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SELECT 0 < 2 LIKE 1, (0 < 2) LIKE 1, 0 < (2 LIKE 1)
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} {1 1 0}
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do_execsql_test e_expr-1.2.2 {
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SELECT 0 LIKE 0 < 2, (0 LIKE 0) < 2, 0 LIKE (0 < 2)
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} {0 1 0}
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# Showing that LIKE and == have the same precedence
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#
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do_execsql_test e_expr-1.2.3 {
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SELECT 2 LIKE 2 == 1, (2 LIKE 2) == 1, 2 LIKE (2 == 1)
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} {1 1 0}
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do_execsql_test e_expr-1.2.4 {
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SELECT 2 == 2 LIKE 1, (2 == 2) LIKE 1, 2 == (2 LIKE 1)
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} {1 1 0}
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# Showing that < groups more tightly than == (< has higher precedence).
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#
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do_execsql_test e_expr-1.2.5 {
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SELECT 0 < 2 == 1, (0 < 2) == 1, 0 < (2 == 1)
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} {1 1 0}
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do_execsql_test e_expr-1.6 {
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SELECT 0 == 0 < 2, (0 == 0) < 2, 0 == (0 < 2)
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} {0 1 0}
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#-------------------------------------------------------------------------
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# Check that the four unary prefix operators mentioned in the
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# documentation exist.
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#
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# EVIDENCE-OF: R-13958-53419 Supported unary prefix operators are these:
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# - + ~ NOT
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#
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do_execsql_test e_expr-2.1 { SELECT - 10 } {-10}
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do_execsql_test e_expr-2.2 { SELECT + 10 } {10}
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do_execsql_test e_expr-2.3 { SELECT ~ 10 } {-11}
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do_execsql_test e_expr-2.4 { SELECT NOT 10 } {0}
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#-------------------------------------------------------------------------
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# Tests for the two statements made regarding the unary + operator.
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#
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# EVIDENCE-OF: R-53670-03373 The unary operator + is a no-op.
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#
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# EVIDENCE-OF: R-19480-30968 It can be applied to strings, numbers,
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# blobs or NULL and it always returns a result with the same value as
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# the operand.
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#
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foreach {tn literal type} {
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1 'helloworld' text
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2 45 integer
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3 45.2 real
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4 45.0 real
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5 X'ABCDEF' blob
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6 NULL null
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} {
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set sql " SELECT quote( + $literal ), typeof( + $literal) "
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do_execsql_test e_expr-3.$tn $sql [list $literal $type]
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}
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#-------------------------------------------------------------------------
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# Check that both = and == are both acceptable as the "equals" operator.
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# Similarly, either != or <> work as the not-equals operator.
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#
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# EVIDENCE-OF: R-03679-60639 Equals can be either = or ==.
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#
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# EVIDENCE-OF: R-30082-38996 The non-equals operator can be either != or
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# <>.
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#
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foreach {tn literal different} {
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1 'helloworld' '12345'
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2 22 23
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3 'xyz' X'78797A'
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4 X'78797A00' 'xyz'
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} {
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do_execsql_test e_expr-4.$tn "
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SELECT $literal = $literal, $literal == $literal,
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$literal = $different, $literal == $different,
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$literal = NULL, $literal == NULL,
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$literal != $literal, $literal <> $literal,
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$literal != $different, $literal <> $different,
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$literal != NULL, $literal != NULL
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" {1 1 0 0 {} {} 0 0 1 1 {} {}}
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}
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#-------------------------------------------------------------------------
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# Test the || operator.
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#
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# EVIDENCE-OF: R-44409-62641 The || operator is "concatenate" - it joins
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# together the two strings of its operands.
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#
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foreach {tn a b} {
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1 'helloworld' '12345'
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2 22 23
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} {
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set as [db one "SELECT $a"]
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set bs [db one "SELECT $b"]
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do_execsql_test e_expr-5.$tn "SELECT $a || $b" [list "${as}${bs}"]
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}
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#-------------------------------------------------------------------------
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# Test the % operator.
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#
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# EVIDENCE-OF: R-08914-63790 The operator % outputs the value of its
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# left operand modulo its right operand.
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#
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do_execsql_test e_expr-6.1 {SELECT 72%5} {2}
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do_execsql_test e_expr-6.2 {SELECT 72%-5} {2}
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do_execsql_test e_expr-6.3 {SELECT -72%-5} {-2}
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do_execsql_test e_expr-6.4 {SELECT -72%5} {-2}
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#-------------------------------------------------------------------------
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# Test that the results of all binary operators are either numeric or
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# NULL, except for the || operator, which may evaluate to either a text
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# value or NULL.
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#
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# EVIDENCE-OF: R-20665-17792 The result of any binary operator is either
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# a numeric value or NULL, except for the || concatenation operator
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# which always evaluates to either NULL or a text value.
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#
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set literals {
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1 'abc' 2 'hexadecimal' 3 ''
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4 123 5 -123 6 0
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7 123.4 8 0.0 9 -123.4
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10 X'ABCDEF' 11 X'' 12 X'0000'
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13 NULL
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}
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foreach op $oplist {
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foreach {n1 rhs} $literals {
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foreach {n2 lhs} $literals {
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set t [db one " SELECT typeof($lhs $op $rhs) "]
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do_test e_expr-7.$opname($op).$n1.$n2 {
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expr {
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($op=="||" && ($t == "text" || $t == "null"))
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|| ($op!="||" && ($t == "integer" || $t == "real" || $t == "null"))
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}
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} 1
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}}
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}
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#-------------------------------------------------------------------------
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# Test the IS and IS NOT operators.
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#
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# EVIDENCE-OF: R-24731-45773 The IS and IS NOT operators work like = and
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# != except when one or both of the operands are NULL.
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#
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# EVIDENCE-OF: R-06325-15315 In this case, if both operands are NULL,
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# then the IS operator evaluates to 1 (true) and the IS NOT operator
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# evaluates to 0 (false).
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#
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# EVIDENCE-OF: R-19812-36779 If one operand is NULL and the other is
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# not, then the IS operator evaluates to 0 (false) and the IS NOT
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# operator is 1 (true).
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#
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# EVIDENCE-OF: R-61975-13410 It is not possible for an IS or IS NOT
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# expression to evaluate to NULL.
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#
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do_execsql_test e_expr-8.1.1 { SELECT NULL IS NULL } {1}
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do_execsql_test e_expr-8.1.2 { SELECT 'ab' IS NULL } {0}
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do_execsql_test e_expr-8.1.3 { SELECT NULL IS 'ab' } {0}
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do_execsql_test e_expr-8.1.4 { SELECT 'ab' IS 'ab' } {1}
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do_execsql_test e_expr-8.1.5 { SELECT NULL == NULL } {{}}
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do_execsql_test e_expr-8.1.6 { SELECT 'ab' == NULL } {{}}
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do_execsql_test e_expr-8.1.7 { SELECT NULL == 'ab' } {{}}
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do_execsql_test e_expr-8.1.8 { SELECT 'ab' == 'ab' } {1}
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do_execsql_test e_expr-8.1.9 { SELECT NULL IS NOT NULL } {0}
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do_execsql_test e_expr-8.1.10 { SELECT 'ab' IS NOT NULL } {1}
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do_execsql_test e_expr-8.1.11 { SELECT NULL IS NOT 'ab' } {1}
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do_execsql_test e_expr-8.1.12 { SELECT 'ab' IS NOT 'ab' } {0}
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do_execsql_test e_expr-8.1.13 { SELECT NULL != NULL } {{}}
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do_execsql_test e_expr-8.1.14 { SELECT 'ab' != NULL } {{}}
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do_execsql_test e_expr-8.1.15 { SELECT NULL != 'ab' } {{}}
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do_execsql_test e_expr-8.1.16 { SELECT 'ab' != 'ab' } {0}
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foreach {n1 rhs} $literals {
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foreach {n2 lhs} $literals {
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if {$rhs!="NULL" && $lhs!="NULL"} {
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set eq [execsql "SELECT $lhs = $rhs, $lhs != $rhs"]
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} else {
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set eq [list [expr {$lhs=="NULL" && $rhs=="NULL"}] \
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[expr {$lhs!="NULL" || $rhs!="NULL"}]
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]
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}
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set test e_expr-8.2.$n1.$n2
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do_execsql_test $test.1 "SELECT $lhs IS $rhs, $lhs IS NOT $rhs" $eq
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do_execsql_test $test.2 "
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SELECT ($lhs IS $rhs) IS NULL, ($lhs IS NOT $rhs) IS NULL
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" {0 0}
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}
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}
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#-------------------------------------------------------------------------
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# Run some tests on the COLLATE "unary postfix operator".
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#
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# This collation sequence reverses both arguments before using
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# [string compare] to compare them. For example, when comparing the
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# strings 'one' and 'four', return the result of:
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#
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# string compare eno ruof
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#
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proc reverse_str {zStr} {
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set out ""
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foreach c [split $zStr {}] { set out "${c}${out}" }
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set out
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}
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proc reverse_collate {zLeft zRight} {
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string compare [reverse_str $zLeft] [reverse_str $zRight]
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}
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db collate reverse reverse_collate
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# EVIDENCE-OF: R-59577-33471 The COLLATE operator is a unary postfix
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# operator that assigns a collating sequence to an expression.
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#
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# EVIDENCE-OF: R-36231-30731 The COLLATE operator has a higher
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# precedence (binds more tightly) than any binary operator and any unary
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# prefix operator except "~".
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#
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do_execsql_test e_expr-9.1 { SELECT 'abcd' < 'bbbb' COLLATE reverse } 0
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do_execsql_test e_expr-9.2 { SELECT ('abcd' < 'bbbb') COLLATE reverse } 1
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do_execsql_test e_expr-9.3 { SELECT 'abcd' <= 'bbbb' COLLATE reverse } 0
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do_execsql_test e_expr-9.4 { SELECT ('abcd' <= 'bbbb') COLLATE reverse } 1
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do_execsql_test e_expr-9.5 { SELECT 'abcd' > 'bbbb' COLLATE reverse } 1
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do_execsql_test e_expr-9.6 { SELECT ('abcd' > 'bbbb') COLLATE reverse } 0
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do_execsql_test e_expr-9.7 { SELECT 'abcd' >= 'bbbb' COLLATE reverse } 1
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do_execsql_test e_expr-9.8 { SELECT ('abcd' >= 'bbbb') COLLATE reverse } 0
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do_execsql_test e_expr-9.10 { SELECT 'abcd' = 'ABCD' COLLATE nocase } 1
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do_execsql_test e_expr-9.11 { SELECT ('abcd' = 'ABCD') COLLATE nocase } 0
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do_execsql_test e_expr-9.12 { SELECT 'abcd' == 'ABCD' COLLATE nocase } 1
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do_execsql_test e_expr-9.13 { SELECT ('abcd' == 'ABCD') COLLATE nocase } 0
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do_execsql_test e_expr-9.14 { SELECT 'abcd' IS 'ABCD' COLLATE nocase } 1
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do_execsql_test e_expr-9.15 { SELECT ('abcd' IS 'ABCD') COLLATE nocase } 0
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do_execsql_test e_expr-9.16 { SELECT 'abcd' != 'ABCD' COLLATE nocase } 0
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do_execsql_test e_expr-9.17 { SELECT ('abcd' != 'ABCD') COLLATE nocase } 1
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do_execsql_test e_expr-9.18 { SELECT 'abcd' <> 'ABCD' COLLATE nocase } 0
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do_execsql_test e_expr-9.19 { SELECT ('abcd' <> 'ABCD') COLLATE nocase } 1
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do_execsql_test e_expr-9.20 { SELECT 'abcd' IS NOT 'ABCD' COLLATE nocase } 0
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do_execsql_test e_expr-9.21 { SELECT ('abcd' IS NOT 'ABCD') COLLATE nocase } 1
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do_execsql_test e_expr-9.22 {
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SELECT 'bbb' BETWEEN 'AAA' AND 'CCC' COLLATE nocase
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} 1
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do_execsql_test e_expr-9.23 {
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SELECT ('bbb' BETWEEN 'AAA' AND 'CCC') COLLATE nocase
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} 0
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# EVIDENCE-OF: R-58731-25439 The collating sequence set by the COLLATE
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# operator overrides the collating sequence determined by the COLLATE
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# clause in a table column definition.
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#
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do_execsql_test e_expr-9.24 {
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CREATE TABLE t24(a COLLATE NOCASE, b);
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INSERT INTO t24 VALUES('aaa', 1);
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INSERT INTO t24 VALUES('bbb', 2);
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INSERT INTO t24 VALUES('ccc', 3);
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} {}
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do_execsql_test e_expr-9.25 { SELECT 'BBB' = a FROM t24 } {0 1 0}
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do_execsql_test e_expr-9.25 { SELECT a = 'BBB' FROM t24 } {0 1 0}
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do_execsql_test e_expr-9.25 { SELECT 'BBB' = a COLLATE binary FROM t24 } {0 0 0}
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do_execsql_test e_expr-9.25 { SELECT a COLLATE binary = 'BBB' FROM t24 } {0 0 0}
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#-------------------------------------------------------------------------
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# Test statements related to literal values.
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#
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# EVIDENCE-OF: R-31536-32008 Literal values may be integers, floating
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# point numbers, strings, BLOBs, or NULLs.
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#
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do_execsql_test e_expr-10.1.1 { SELECT typeof(5) } {integer}
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do_execsql_test e_expr-10.1.2 { SELECT typeof(5.1) } {real}
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do_execsql_test e_expr-10.1.3 { SELECT typeof('5.1') } {text}
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do_execsql_test e_expr-10.1.4 { SELECT typeof(X'ABCD') } {blob}
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do_execsql_test e_expr-10.1.5 { SELECT typeof(NULL) } {null}
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# "Scientific notation is supported for point literal values."
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#
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do_execsql_test e_expr-10.2.1 { SELECT typeof(3.4e-02) } {real}
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do_execsql_test e_expr-10.2.2 { SELECT typeof(3e+5) } {real}
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do_execsql_test e_expr-10.2.3 { SELECT 3.4e-02 } {0.034}
|
|
do_execsql_test e_expr-10.2.4 { SELECT 3e+4 } {30000.0}
|
|
|
|
# EVIDENCE-OF: R-35229-17830 A string constant is formed by enclosing
|
|
# the string in single quotes (').
|
|
#
|
|
# EVIDENCE-OF: R-07100-06606 A single quote within the string can be
|
|
# encoded by putting two single quotes in a row - as in Pascal.
|
|
#
|
|
do_execsql_test e_expr-10.3.1 { SELECT 'is not' } {{is not}}
|
|
do_execsql_test e_expr-10.3.2 { SELECT typeof('is not') } {text}
|
|
do_execsql_test e_expr-10.3.3 { SELECT 'isn''t' } {isn't}
|
|
do_execsql_test e_expr-10.3.4 { SELECT typeof('isn''t') } {text}
|
|
|
|
# EVIDENCE-OF: R-09593-03321 BLOB literals are string literals
|
|
# containing hexadecimal data and preceded by a single "x" or "X"
|
|
# character.
|
|
#
|
|
# EVIDENCE-OF: R-19836-11244 Example: X'53514C697465'
|
|
#
|
|
do_execsql_test e_expr-10.4.1 { SELECT typeof(X'0123456789ABCDEF') } blob
|
|
do_execsql_test e_expr-10.4.2 { SELECT typeof(x'0123456789ABCDEF') } blob
|
|
do_execsql_test e_expr-10.4.3 { SELECT typeof(X'0123456789abcdef') } blob
|
|
do_execsql_test e_expr-10.4.4 { SELECT typeof(x'0123456789abcdef') } blob
|
|
do_execsql_test e_expr-10.4.5 { SELECT typeof(X'53514C697465') } blob
|
|
|
|
# EVIDENCE-OF: R-23914-51476 A literal value can also be the token
|
|
# "NULL".
|
|
#
|
|
do_execsql_test e_expr-10.5.1 { SELECT NULL } {{}}
|
|
do_execsql_test e_expr-10.5.2 { SELECT typeof(NULL) } {null}
|
|
|
|
#-------------------------------------------------------------------------
|
|
# Test statements related to bound parameters
|
|
#
|
|
|
|
proc parameter_test {tn sql params result} {
|
|
set stmt [sqlite3_prepare_v2 db $sql -1]
|
|
|
|
foreach {number name} $params {
|
|
set nm [sqlite3_bind_parameter_name $stmt $number]
|
|
do_test $tn.name.$number [list set {} $nm] $name
|
|
sqlite3_bind_int $stmt $number [expr -1 * $number]
|
|
}
|
|
|
|
sqlite3_step $stmt
|
|
|
|
set res [list]
|
|
for {set i 0} {$i < [sqlite3_column_count $stmt]} {incr i} {
|
|
lappend res [sqlite3_column_text $stmt $i]
|
|
}
|
|
|
|
set rc [sqlite3_finalize $stmt]
|
|
do_test $tn.rc [list set {} $rc] SQLITE_OK
|
|
do_test $tn.res [list set {} $res] $result
|
|
}
|
|
|
|
# EVIDENCE-OF: R-33509-39458 A question mark followed by a number NNN
|
|
# holds a spot for the NNN-th parameter. NNN must be between 1 and
|
|
# SQLITE_MAX_VARIABLE_NUMBER.
|
|
#
|
|
set mvn $SQLITE_MAX_VARIABLE_NUMBER
|
|
parameter_test e_expr-11.1 "
|
|
SELECT ?1, ?123, ?$SQLITE_MAX_VARIABLE_NUMBER, ?123, ?4
|
|
" "1 ?1 123 ?123 $mvn ?$mvn 4 ?4" "-1 -123 -$mvn -123 -4"
|
|
|
|
set errmsg "variable number must be between ?1 and ?$SQLITE_MAX_VARIABLE_NUMBER"
|
|
foreach {tn param_number} [list \
|
|
2 0 \
|
|
3 [expr $SQLITE_MAX_VARIABLE_NUMBER+1] \
|
|
4 [expr $SQLITE_MAX_VARIABLE_NUMBER+2] \
|
|
5 12345678903456789034567890234567890 \
|
|
6 2147483648 \
|
|
7 2147483649 \
|
|
8 4294967296 \
|
|
9 4294967297 \
|
|
10 9223372036854775808 \
|
|
11 9223372036854775809 \
|
|
12 18446744073709551616 \
|
|
13 18446744073709551617 \
|
|
] {
|
|
do_catchsql_test e_expr-11.1.$tn "SELECT ?$param_number" [list 1 $errmsg]
|
|
}
|
|
|
|
# EVIDENCE-OF: R-33670-36097 A question mark that is not followed by a
|
|
# number creates a parameter with a number one greater than the largest
|
|
# parameter number already assigned.
|
|
#
|
|
# EVIDENCE-OF: R-42938-07030 If this means the parameter number is
|
|
# greater than SQLITE_MAX_VARIABLE_NUMBER, it is an error.
|
|
#
|
|
parameter_test e_expr-11.2.1 "SELECT ?" {1 {}} -1
|
|
parameter_test e_expr-11.2.2 "SELECT ?, ?" {1 {} 2 {}} {-1 -2}
|
|
parameter_test e_expr-11.2.3 "SELECT ?5, ?" {5 ?5 6 {}} {-5 -6}
|
|
parameter_test e_expr-11.2.4 "SELECT ?, ?5" {1 {} 5 ?5} {-1 -5}
|
|
parameter_test e_expr-11.2.5 "SELECT ?, ?456, ?" {
|
|
1 {} 456 ?456 457 {}
|
|
} {-1 -456 -457}
|
|
parameter_test e_expr-11.2.5 "SELECT ?, ?456, ?4, ?" {
|
|
1 {} 456 ?456 4 ?4 457 {}
|
|
} {-1 -456 -4 -457}
|
|
foreach {tn sql} [list \
|
|
1 "SELECT ?$mvn, ?" \
|
|
2 "SELECT ?[expr $mvn-5], ?, ?, ?, ?, ?, ?" \
|
|
3 "SELECT ?[expr $mvn], ?5, ?6, ?" \
|
|
] {
|
|
do_catchsql_test e_expr-11.3.$tn $sql [list 1 {too many SQL variables}]
|
|
}
|
|
|
|
# EVIDENCE-OF: R-11620-22743 A colon followed by an identifier name
|
|
# holds a spot for a named parameter with the name :AAAA.
|
|
#
|
|
# Identifiers in SQLite consist of alphanumeric, '_' and '$' characters,
|
|
# and any UTF characters with codepoints larger than 127 (non-ASCII
|
|
# characters).
|
|
#
|
|
parameter_test e_expr-11.2.1 {SELECT :AAAA} {1 :AAAA} -1
|
|
parameter_test e_expr-11.2.2 {SELECT :123} {1 :123} -1
|
|
parameter_test e_expr-11.2.3 {SELECT :__} {1 :__} -1
|
|
parameter_test e_expr-11.2.4 {SELECT :_$_} {1 :_$_} -1
|
|
parameter_test e_expr-11.2.5 "
|
|
SELECT :\u0e40\u0e2d\u0e28\u0e02\u0e39\u0e40\u0e2d\u0e25
|
|
" "1 :\u0e40\u0e2d\u0e28\u0e02\u0e39\u0e40\u0e2d\u0e25" -1
|
|
parameter_test e_expr-11.2.6 "SELECT :\u0080" "1 :\u0080" -1
|
|
|
|
# EVIDENCE-OF: R-49783-61279 An "at" sign works exactly like a colon,
|
|
# except that the name of the parameter created is @AAAA.
|
|
#
|
|
parameter_test e_expr-11.3.1 {SELECT @AAAA} {1 @AAAA} -1
|
|
parameter_test e_expr-11.3.2 {SELECT @123} {1 @123} -1
|
|
parameter_test e_expr-11.3.3 {SELECT @__} {1 @__} -1
|
|
parameter_test e_expr-11.3.4 {SELECT @_$_} {1 @_$_} -1
|
|
parameter_test e_expr-11.3.5 "
|
|
SELECT @\u0e40\u0e2d\u0e28\u0e02\u0e39\u0e40\u0e2d\u0e25
|
|
" "1 @\u0e40\u0e2d\u0e28\u0e02\u0e39\u0e40\u0e2d\u0e25" -1
|
|
parameter_test e_expr-11.3.6 "SELECT @\u0080" "1 @\u0080" -1
|
|
|
|
# EVIDENCE-OF: R-62610-51329 A dollar-sign followed by an identifier
|
|
# name also holds a spot for a named parameter with the name $AAAA.
|
|
#
|
|
# EVIDENCE-OF: R-55025-21042 The identifier name in this case can
|
|
# include one or more occurrences of "::" and a suffix enclosed in
|
|
# "(...)" containing any text at all.
|
|
#
|
|
# Note: Looks like an identifier cannot consist entirely of "::"
|
|
# characters or just a suffix. Also, the other named variable characters
|
|
# (: and @) work the same way internally. Why not just document it that way?
|
|
#
|
|
parameter_test e_expr-11.4.1 {SELECT $AAAA} {1 $AAAA} -1
|
|
parameter_test e_expr-11.4.2 {SELECT $123} {1 $123} -1
|
|
parameter_test e_expr-11.4.3 {SELECT $__} {1 $__} -1
|
|
parameter_test e_expr-11.4.4 {SELECT $_$_} {1 $_$_} -1
|
|
parameter_test e_expr-11.4.5 "
|
|
SELECT \$\u0e40\u0e2d\u0e28\u0e02\u0e39\u0e40\u0e2d\u0e25
|
|
" "1 \$\u0e40\u0e2d\u0e28\u0e02\u0e39\u0e40\u0e2d\u0e25" -1
|
|
parameter_test e_expr-11.4.6 "SELECT \$\u0080" "1 \$\u0080" -1
|
|
|
|
parameter_test e_expr-11.5.1 {SELECT $::::a(++--++)} {1 $::::a(++--++)} -1
|
|
parameter_test e_expr-11.5.2 {SELECT $::a()} {1 $::a()} -1
|
|
parameter_test e_expr-11.5.3 {SELECT $::1(::#$)} {1 $::1(::#$)} -1
|
|
|
|
# EVIDENCE-OF: R-11370-04520 Named parameters are also numbered. The
|
|
# number assigned is one greater than the largest parameter number
|
|
# already assigned.
|
|
#
|
|
# EVIDENCE-OF: R-42620-22184 If this means the parameter would be
|
|
# assigned a number greater than SQLITE_MAX_VARIABLE_NUMBER, it is an
|
|
# error.
|
|
#
|
|
parameter_test e_expr-11.6.1 "SELECT ?, @abc" {1 {} 2 @abc} {-1 -2}
|
|
parameter_test e_expr-11.6.2 "SELECT ?123, :a1" {123 ?123 124 :a1} {-123 -124}
|
|
parameter_test e_expr-11.6.3 {SELECT $a, ?8, ?, $b, ?2, $c} {
|
|
1 $a 8 ?8 9 {} 10 $b 2 ?2 11 $c
|
|
} {-1 -8 -9 -10 -2 -11}
|
|
foreach {tn sql} [list \
|
|
1 "SELECT ?$mvn, \$::a" \
|
|
2 "SELECT ?$mvn, ?4, @a1" \
|
|
3 "SELECT ?[expr $mvn-2], :bag, @123, \$x" \
|
|
] {
|
|
do_catchsql_test e_expr-11.7.$tn $sql [list 1 {too many SQL variables}]
|
|
}
|
|
|
|
# EVIDENCE-OF: R-14068-49671 Parameters that are not assigned values
|
|
# using sqlite3_bind() are treated as NULL.
|
|
#
|
|
do_test e_expr-11.7.1 {
|
|
set stmt [sqlite3_prepare_v2 db { SELECT ?, :a, @b, $d } -1]
|
|
sqlite3_step $stmt
|
|
|
|
list [sqlite3_column_type $stmt 0] \
|
|
[sqlite3_column_type $stmt 1] \
|
|
[sqlite3_column_type $stmt 2] \
|
|
[sqlite3_column_type $stmt 3]
|
|
} {NULL NULL NULL NULL}
|
|
do_test e_expr-11.7.1 { sqlite3_finalize $stmt } SQLITE_OK
|
|
|
|
#-------------------------------------------------------------------------
|
|
# "Test" the syntax diagrams in lang_expr.html.
|
|
#
|
|
# -- syntax diagram signed-number
|
|
#
|
|
do_execsql_test e_expr-12.1.1 { SELECT 0, +0, -0 } {0 0 0}
|
|
do_execsql_test e_expr-12.1.2 { SELECT 1, +1, -1 } {1 1 -1}
|
|
do_execsql_test e_expr-12.1.3 { SELECT 2, +2, -2 } {2 2 -2}
|
|
do_execsql_test e_expr-12.1.4 {
|
|
SELECT 1.4, +1.4, -1.4
|
|
} {1.4 1.4 -1.4}
|
|
do_execsql_test e_expr-12.1.5 {
|
|
SELECT 1.5e+5, +1.5e+5, -1.5e+5
|
|
} {150000.0 150000.0 -150000.0}
|
|
do_execsql_test e_expr-12.1.6 {
|
|
SELECT 0.0001, +0.0001, -0.0001
|
|
} {0.0001 0.0001 -0.0001}
|
|
|
|
# -- syntax diagram literal-value
|
|
#
|
|
set sqlite_current_time 1
|
|
do_execsql_test e_expr-12.2.1 {SELECT 123} {123}
|
|
do_execsql_test e_expr-12.2.2 {SELECT 123.4e05} {12340000.0}
|
|
do_execsql_test e_expr-12.2.3 {SELECT 'abcde'} {abcde}
|
|
do_execsql_test e_expr-12.2.4 {SELECT X'414243'} {ABC}
|
|
do_execsql_test e_expr-12.2.5 {SELECT NULL} {{}}
|
|
do_execsql_test e_expr-12.2.6 {SELECT CURRENT_TIME} {00:00:01}
|
|
do_execsql_test e_expr-12.2.7 {SELECT CURRENT_DATE} {1970-01-01}
|
|
do_execsql_test e_expr-12.2.8 {SELECT CURRENT_TIMESTAMP} {{1970-01-01 00:00:01}}
|
|
set sqlite_current_time 0
|
|
|
|
# -- syntax diagram expr
|
|
#
|
|
forcedelete test.db2
|
|
execsql {
|
|
ATTACH 'test.db2' AS dbname;
|
|
CREATE TABLE dbname.tblname(cname);
|
|
}
|
|
|
|
proc glob {args} {return 1}
|
|
db function glob glob
|
|
db function match glob
|
|
db function regexp glob
|
|
|
|
foreach {tn expr} {
|
|
1 123
|
|
2 123.4e05
|
|
3 'abcde'
|
|
4 X'414243'
|
|
5 NULL
|
|
6 CURRENT_TIME
|
|
7 CURRENT_DATE
|
|
8 CURRENT_TIMESTAMP
|
|
|
|
9 ?
|
|
10 ?123
|
|
11 @hello
|
|
12 :world
|
|
13 $tcl
|
|
14 $tcl(array)
|
|
|
|
15 cname
|
|
16 tblname.cname
|
|
17 dbname.tblname.cname
|
|
|
|
18 "+ EXPR"
|
|
19 "- EXPR"
|
|
20 "NOT EXPR"
|
|
21 "~ EXPR"
|
|
|
|
22 "EXPR1 || EXPR2"
|
|
23 "EXPR1 * EXPR2"
|
|
24 "EXPR1 / EXPR2"
|
|
25 "EXPR1 % EXPR2"
|
|
26 "EXPR1 + EXPR2"
|
|
27 "EXPR1 - EXPR2"
|
|
28 "EXPR1 << EXPR2"
|
|
29 "EXPR1 >> EXPR2"
|
|
30 "EXPR1 & EXPR2"
|
|
31 "EXPR1 | EXPR2"
|
|
32 "EXPR1 < EXPR2"
|
|
33 "EXPR1 <= EXPR2"
|
|
34 "EXPR1 > EXPR2"
|
|
35 "EXPR1 >= EXPR2"
|
|
36 "EXPR1 = EXPR2"
|
|
37 "EXPR1 == EXPR2"
|
|
38 "EXPR1 != EXPR2"
|
|
39 "EXPR1 <> EXPR2"
|
|
40 "EXPR1 IS EXPR2"
|
|
41 "EXPR1 IS NOT EXPR2"
|
|
42 "EXPR1 AND EXPR2"
|
|
43 "EXPR1 OR EXPR2"
|
|
|
|
44 "count(*)"
|
|
45 "count(DISTINCT EXPR)"
|
|
46 "substr(EXPR, 10, 20)"
|
|
47 "changes()"
|
|
|
|
48 "( EXPR )"
|
|
|
|
49 "CAST ( EXPR AS integer )"
|
|
50 "CAST ( EXPR AS 'abcd' )"
|
|
51 "CAST ( EXPR AS 'ab$ $cd' )"
|
|
|
|
52 "EXPR COLLATE nocase"
|
|
53 "EXPR COLLATE binary"
|
|
|
|
54 "EXPR1 LIKE EXPR2"
|
|
55 "EXPR1 LIKE EXPR2 ESCAPE EXPR"
|
|
56 "EXPR1 GLOB EXPR2"
|
|
57 "EXPR1 GLOB EXPR2 ESCAPE EXPR"
|
|
58 "EXPR1 REGEXP EXPR2"
|
|
59 "EXPR1 REGEXP EXPR2 ESCAPE EXPR"
|
|
60 "EXPR1 MATCH EXPR2"
|
|
61 "EXPR1 MATCH EXPR2 ESCAPE EXPR"
|
|
62 "EXPR1 NOT LIKE EXPR2"
|
|
63 "EXPR1 NOT LIKE EXPR2 ESCAPE EXPR"
|
|
64 "EXPR1 NOT GLOB EXPR2"
|
|
65 "EXPR1 NOT GLOB EXPR2 ESCAPE EXPR"
|
|
66 "EXPR1 NOT REGEXP EXPR2"
|
|
67 "EXPR1 NOT REGEXP EXPR2 ESCAPE EXPR"
|
|
68 "EXPR1 NOT MATCH EXPR2"
|
|
69 "EXPR1 NOT MATCH EXPR2 ESCAPE EXPR"
|
|
|
|
70 "EXPR ISNULL"
|
|
71 "EXPR NOTNULL"
|
|
72 "EXPR NOT NULL"
|
|
|
|
73 "EXPR1 IS EXPR2"
|
|
74 "EXPR1 IS NOT EXPR2"
|
|
|
|
75 "EXPR NOT BETWEEN EXPR1 AND EXPR2"
|
|
76 "EXPR BETWEEN EXPR1 AND EXPR2"
|
|
|
|
77 "EXPR NOT IN (SELECT cname FROM tblname)"
|
|
78 "EXPR NOT IN (1)"
|
|
79 "EXPR NOT IN (1, 2, 3)"
|
|
80 "EXPR NOT IN tblname"
|
|
81 "EXPR NOT IN dbname.tblname"
|
|
82 "EXPR IN (SELECT cname FROM tblname)"
|
|
83 "EXPR IN (1)"
|
|
84 "EXPR IN (1, 2, 3)"
|
|
85 "EXPR IN tblname"
|
|
86 "EXPR IN dbname.tblname"
|
|
|
|
87 "EXISTS (SELECT cname FROM tblname)"
|
|
88 "NOT EXISTS (SELECT cname FROM tblname)"
|
|
|
|
89 "CASE EXPR WHEN EXPR1 THEN EXPR2 ELSE EXPR END"
|
|
90 "CASE EXPR WHEN EXPR1 THEN EXPR2 END"
|
|
91 "CASE EXPR WHEN EXPR1 THEN EXPR2 WHEN EXPR THEN EXPR1 ELSE EXPR2 END"
|
|
92 "CASE EXPR WHEN EXPR1 THEN EXPR2 WHEN EXPR THEN EXPR1 END"
|
|
93 "CASE WHEN EXPR1 THEN EXPR2 ELSE EXPR END"
|
|
94 "CASE WHEN EXPR1 THEN EXPR2 END"
|
|
95 "CASE WHEN EXPR1 THEN EXPR2 WHEN EXPR THEN EXPR1 ELSE EXPR2 END"
|
|
96 "CASE WHEN EXPR1 THEN EXPR2 WHEN EXPR THEN EXPR1 END"
|
|
} {
|
|
|
|
# If the expression string being parsed contains "EXPR2", then replace
|
|
# string "EXPR1" and "EXPR2" with arbitrary SQL expressions. If it
|
|
# contains "EXPR", then replace EXPR with an arbitrary SQL expression.
|
|
#
|
|
set elist [list $expr]
|
|
if {[string match *EXPR2* $expr]} {
|
|
set elist [list]
|
|
foreach {e1 e2} { cname "34+22" } {
|
|
lappend elist [string map [list EXPR1 $e1 EXPR2 $e2] $expr]
|
|
}
|
|
}
|
|
if {[string match *EXPR* $expr]} {
|
|
set elist2 [list]
|
|
foreach el $elist {
|
|
foreach e { cname "34+22" } {
|
|
lappend elist2 [string map [list EXPR $e] $el]
|
|
}
|
|
}
|
|
set elist $elist2
|
|
}
|
|
|
|
set x 0
|
|
foreach e $elist {
|
|
incr x
|
|
do_test e_expr-12.3.$tn.$x {
|
|
set rc [catch { execsql "SELECT $e FROM tblname" } msg]
|
|
} {0}
|
|
}
|
|
}
|
|
|
|
# -- syntax diagram raise-function
|
|
#
|
|
foreach {tn raiseexpr} {
|
|
1 "RAISE(IGNORE)"
|
|
2 "RAISE(ROLLBACK, 'error message')"
|
|
3 "RAISE(ABORT, 'error message')"
|
|
4 "RAISE(FAIL, 'error message')"
|
|
} {
|
|
do_execsql_test e_expr-12.4.$tn "
|
|
CREATE TRIGGER dbname.tr$tn BEFORE DELETE ON tblname BEGIN
|
|
SELECT $raiseexpr ;
|
|
END;
|
|
" {}
|
|
}
|
|
|
|
#-------------------------------------------------------------------------
|
|
# Test the statements related to the BETWEEN operator.
|
|
#
|
|
# EVIDENCE-OF: R-40079-54503 The BETWEEN operator is logically
|
|
# equivalent to a pair of comparisons. "x BETWEEN y AND z" is equivalent
|
|
# to "x>=y AND x<=z" except that with BETWEEN, the x expression is
|
|
# only evaluated once.
|
|
#
|
|
db func x x
|
|
proc x {} { incr ::xcount ; return [expr $::x] }
|
|
foreach {tn x expr res nEval} {
|
|
1 10 "x() >= 5 AND x() <= 15" 1 2
|
|
2 10 "x() BETWEEN 5 AND 15" 1 1
|
|
|
|
3 5 "x() >= 5 AND x() <= 5" 1 2
|
|
4 5 "x() BETWEEN 5 AND 5" 1 1
|
|
} {
|
|
do_test e_expr-13.1.$tn {
|
|
set ::xcount 0
|
|
set a [execsql "SELECT $expr"]
|
|
list $::xcount $a
|
|
} [list $nEval $res]
|
|
}
|
|
|
|
# EVIDENCE-OF: R-05155-34454 The precedence of the BETWEEN operator is
|
|
# the same as the precedence as operators == and != and LIKE and groups
|
|
# left to right.
|
|
#
|
|
# Therefore, BETWEEN groups more tightly than operator "AND", but less
|
|
# so than "<".
|
|
#
|
|
do_execsql_test e_expr-13.2.1 { SELECT 1 == 10 BETWEEN 0 AND 2 } 1
|
|
do_execsql_test e_expr-13.2.2 { SELECT (1 == 10) BETWEEN 0 AND 2 } 1
|
|
do_execsql_test e_expr-13.2.3 { SELECT 1 == (10 BETWEEN 0 AND 2) } 0
|
|
do_execsql_test e_expr-13.2.4 { SELECT 6 BETWEEN 4 AND 8 == 1 } 1
|
|
do_execsql_test e_expr-13.2.5 { SELECT (6 BETWEEN 4 AND 8) == 1 } 1
|
|
do_execsql_test e_expr-13.2.6 { SELECT 6 BETWEEN 4 AND (8 == 1) } 0
|
|
|
|
do_execsql_test e_expr-13.2.7 { SELECT 5 BETWEEN 0 AND 0 != 1 } 1
|
|
do_execsql_test e_expr-13.2.8 { SELECT (5 BETWEEN 0 AND 0) != 1 } 1
|
|
do_execsql_test e_expr-13.2.9 { SELECT 5 BETWEEN 0 AND (0 != 1) } 0
|
|
do_execsql_test e_expr-13.2.10 { SELECT 1 != 0 BETWEEN 0 AND 2 } 1
|
|
do_execsql_test e_expr-13.2.11 { SELECT (1 != 0) BETWEEN 0 AND 2 } 1
|
|
do_execsql_test e_expr-13.2.12 { SELECT 1 != (0 BETWEEN 0 AND 2) } 0
|
|
|
|
do_execsql_test e_expr-13.2.13 { SELECT 1 LIKE 10 BETWEEN 0 AND 2 } 1
|
|
do_execsql_test e_expr-13.2.14 { SELECT (1 LIKE 10) BETWEEN 0 AND 2 } 1
|
|
do_execsql_test e_expr-13.2.15 { SELECT 1 LIKE (10 BETWEEN 0 AND 2) } 0
|
|
do_execsql_test e_expr-13.2.16 { SELECT 6 BETWEEN 4 AND 8 LIKE 1 } 1
|
|
do_execsql_test e_expr-13.2.17 { SELECT (6 BETWEEN 4 AND 8) LIKE 1 } 1
|
|
do_execsql_test e_expr-13.2.18 { SELECT 6 BETWEEN 4 AND (8 LIKE 1) } 0
|
|
|
|
do_execsql_test e_expr-13.2.19 { SELECT 0 AND 0 BETWEEN 0 AND 1 } 0
|
|
do_execsql_test e_expr-13.2.20 { SELECT 0 AND (0 BETWEEN 0 AND 1) } 0
|
|
do_execsql_test e_expr-13.2.21 { SELECT (0 AND 0) BETWEEN 0 AND 1 } 1
|
|
do_execsql_test e_expr-13.2.22 { SELECT 0 BETWEEN -1 AND 1 AND 0 } 0
|
|
do_execsql_test e_expr-13.2.23 { SELECT (0 BETWEEN -1 AND 1) AND 0 } 0
|
|
do_execsql_test e_expr-13.2.24 { SELECT 0 BETWEEN -1 AND (1 AND 0) } 1
|
|
|
|
do_execsql_test e_expr-13.2.25 { SELECT 2 < 3 BETWEEN 0 AND 1 } 1
|
|
do_execsql_test e_expr-13.2.26 { SELECT (2 < 3) BETWEEN 0 AND 1 } 1
|
|
do_execsql_test e_expr-13.2.27 { SELECT 2 < (3 BETWEEN 0 AND 1) } 0
|
|
do_execsql_test e_expr-13.2.28 { SELECT 2 BETWEEN 1 AND 2 < 3 } 0
|
|
do_execsql_test e_expr-13.2.29 { SELECT 2 BETWEEN 1 AND (2 < 3) } 0
|
|
do_execsql_test e_expr-13.2.30 { SELECT (2 BETWEEN 1 AND 2) < 3 } 1
|
|
|
|
#-------------------------------------------------------------------------
|
|
# Test the statements related to the LIKE and GLOB operators.
|
|
#
|
|
# EVIDENCE-OF: R-16584-60189 The LIKE operator does a pattern matching
|
|
# comparison.
|
|
#
|
|
# EVIDENCE-OF: R-11295-04657 The operand to the right of the LIKE
|
|
# operator contains the pattern and the left hand operand contains the
|
|
# string to match against the pattern.
|
|
#
|
|
do_execsql_test e_expr-14.1.1 { SELECT 'abc%' LIKE 'abcde' } 0
|
|
do_execsql_test e_expr-14.1.2 { SELECT 'abcde' LIKE 'abc%' } 1
|
|
|
|
# EVIDENCE-OF: R-55406-38524 A percent symbol ("%") in the LIKE pattern
|
|
# matches any sequence of zero or more characters in the string.
|
|
#
|
|
do_execsql_test e_expr-14.2.1 { SELECT 'abde' LIKE 'ab%de' } 1
|
|
do_execsql_test e_expr-14.2.2 { SELECT 'abXde' LIKE 'ab%de' } 1
|
|
do_execsql_test e_expr-14.2.3 { SELECT 'abABCde' LIKE 'ab%de' } 1
|
|
|
|
# EVIDENCE-OF: R-30433-25443 An underscore ("_") in the LIKE pattern
|
|
# matches any single character in the string.
|
|
#
|
|
do_execsql_test e_expr-14.3.1 { SELECT 'abde' LIKE 'ab_de' } 0
|
|
do_execsql_test e_expr-14.3.2 { SELECT 'abXde' LIKE 'ab_de' } 1
|
|
do_execsql_test e_expr-14.3.3 { SELECT 'abABCde' LIKE 'ab_de' } 0
|
|
|
|
# EVIDENCE-OF: R-59007-20454 Any other character matches itself or its
|
|
# lower/upper case equivalent (i.e. case-insensitive matching).
|
|
#
|
|
do_execsql_test e_expr-14.4.1 { SELECT 'abc' LIKE 'aBc' } 1
|
|
do_execsql_test e_expr-14.4.2 { SELECT 'aBc' LIKE 'aBc' } 1
|
|
do_execsql_test e_expr-14.4.3 { SELECT 'ac' LIKE 'aBc' } 0
|
|
|
|
# EVIDENCE-OF: R-23648-58527 SQLite only understands upper/lower case
|
|
# for ASCII characters by default.
|
|
#
|
|
# EVIDENCE-OF: R-04532-11527 The LIKE operator is case sensitive by
|
|
# default for unicode characters that are beyond the ASCII range.
|
|
#
|
|
# EVIDENCE-OF: R-44381-11669 the expression
|
|
# 'a' LIKE 'A' is TRUE but
|
|
# 'æ' LIKE 'Æ' is FALSE.
|
|
#
|
|
# The restriction to ASCII characters does not apply if the ICU
|
|
# library is compiled in. When ICU is enabled SQLite does not act
|
|
# as it does "by default".
|
|
#
|
|
do_execsql_test e_expr-14.5.1 { SELECT 'A' LIKE 'a' } 1
|
|
ifcapable !icu {
|
|
do_execsql_test e_expr-14.5.2 "SELECT '\u00c6' LIKE '\u00e6'" 0
|
|
}
|
|
|
|
# EVIDENCE-OF: R-56683-13731 If the optional ESCAPE clause is present,
|
|
# then the expression following the ESCAPE keyword must evaluate to a
|
|
# string consisting of a single character.
|
|
#
|
|
do_catchsql_test e_expr-14.6.1 {
|
|
SELECT 'A' LIKE 'a' ESCAPE '12'
|
|
} {1 {ESCAPE expression must be a single character}}
|
|
do_catchsql_test e_expr-14.6.2 {
|
|
SELECT 'A' LIKE 'a' ESCAPE ''
|
|
} {1 {ESCAPE expression must be a single character}}
|
|
do_catchsql_test e_expr-14.6.3 { SELECT 'A' LIKE 'a' ESCAPE 'x' } {0 1}
|
|
do_catchsql_test e_expr-14.6.4 "SELECT 'A' LIKE 'a' ESCAPE '\u00e6'" {0 1}
|
|
|
|
# EVIDENCE-OF: R-02045-23762 This character may be used in the LIKE
|
|
# pattern to include literal percent or underscore characters.
|
|
#
|
|
# EVIDENCE-OF: R-13345-31830 The escape character followed by a percent
|
|
# symbol (%), underscore (_), or a second instance of the escape
|
|
# character itself matches a literal percent symbol, underscore, or a
|
|
# single escape character, respectively.
|
|
#
|
|
do_execsql_test e_expr-14.7.1 { SELECT 'abc%' LIKE 'abcX%' ESCAPE 'X' } 1
|
|
do_execsql_test e_expr-14.7.2 { SELECT 'abc5' LIKE 'abcX%' ESCAPE 'X' } 0
|
|
do_execsql_test e_expr-14.7.3 { SELECT 'abc' LIKE 'abcX%' ESCAPE 'X' } 0
|
|
do_execsql_test e_expr-14.7.4 { SELECT 'abcX%' LIKE 'abcX%' ESCAPE 'X' } 0
|
|
do_execsql_test e_expr-14.7.5 { SELECT 'abc%%' LIKE 'abcX%' ESCAPE 'X' } 0
|
|
|
|
do_execsql_test e_expr-14.7.6 { SELECT 'abc_' LIKE 'abcX_' ESCAPE 'X' } 1
|
|
do_execsql_test e_expr-14.7.7 { SELECT 'abc5' LIKE 'abcX_' ESCAPE 'X' } 0
|
|
do_execsql_test e_expr-14.7.8 { SELECT 'abc' LIKE 'abcX_' ESCAPE 'X' } 0
|
|
do_execsql_test e_expr-14.7.9 { SELECT 'abcX_' LIKE 'abcX_' ESCAPE 'X' } 0
|
|
do_execsql_test e_expr-14.7.10 { SELECT 'abc__' LIKE 'abcX_' ESCAPE 'X' } 0
|
|
|
|
do_execsql_test e_expr-14.7.11 { SELECT 'abcX' LIKE 'abcXX' ESCAPE 'X' } 1
|
|
do_execsql_test e_expr-14.7.12 { SELECT 'abc5' LIKE 'abcXX' ESCAPE 'X' } 0
|
|
do_execsql_test e_expr-14.7.13 { SELECT 'abc' LIKE 'abcXX' ESCAPE 'X' } 0
|
|
do_execsql_test e_expr-14.7.14 { SELECT 'abcXX' LIKE 'abcXX' ESCAPE 'X' } 0
|
|
|
|
# EVIDENCE-OF: R-51359-17496 The infix LIKE operator is implemented by
|
|
# calling the application-defined SQL functions like(Y,X) or like(Y,X,Z).
|
|
#
|
|
proc likefunc {args} {
|
|
eval lappend ::likeargs $args
|
|
return 1
|
|
}
|
|
db func like -argcount 2 likefunc
|
|
db func like -argcount 3 likefunc
|
|
set ::likeargs [list]
|
|
do_execsql_test e_expr-15.1.1 { SELECT 'abc' LIKE 'def' } 1
|
|
do_test e_expr-15.1.2 { set likeargs } {def abc}
|
|
set ::likeargs [list]
|
|
do_execsql_test e_expr-15.1.3 { SELECT 'abc' LIKE 'def' ESCAPE 'X' } 1
|
|
do_test e_expr-15.1.4 { set likeargs } {def abc X}
|
|
db close
|
|
sqlite3 db test.db
|
|
|
|
# EVIDENCE-OF: R-22868-25880 The LIKE operator can be made case
|
|
# sensitive using the case_sensitive_like pragma.
|
|
#
|
|
do_execsql_test e_expr-16.1.1 { SELECT 'abcxyz' LIKE 'ABC%' } 1
|
|
do_execsql_test e_expr-16.1.2 { PRAGMA case_sensitive_like = 1 } {}
|
|
do_execsql_test e_expr-16.1.3 { SELECT 'abcxyz' LIKE 'ABC%' } 0
|
|
do_execsql_test e_expr-16.1.4 { SELECT 'ABCxyz' LIKE 'ABC%' } 1
|
|
do_execsql_test e_expr-16.1.5 { PRAGMA case_sensitive_like = 0 } {}
|
|
do_execsql_test e_expr-16.1.6 { SELECT 'abcxyz' LIKE 'ABC%' } 1
|
|
do_execsql_test e_expr-16.1.7 { SELECT 'ABCxyz' LIKE 'ABC%' } 1
|
|
|
|
# EVIDENCE-OF: R-52087-12043 The GLOB operator is similar to LIKE but
|
|
# uses the Unix file globbing syntax for its wildcards.
|
|
#
|
|
# EVIDENCE-OF: R-09813-17279 Also, GLOB is case sensitive, unlike LIKE.
|
|
#
|
|
do_execsql_test e_expr-17.1.1 { SELECT 'abcxyz' GLOB 'abc%' } 0
|
|
do_execsql_test e_expr-17.1.2 { SELECT 'abcxyz' GLOB 'abc*' } 1
|
|
do_execsql_test e_expr-17.1.3 { SELECT 'abcxyz' GLOB 'abc___' } 0
|
|
do_execsql_test e_expr-17.1.4 { SELECT 'abcxyz' GLOB 'abc???' } 1
|
|
|
|
do_execsql_test e_expr-17.1.5 { SELECT 'abcxyz' GLOB 'abc*' } 1
|
|
do_execsql_test e_expr-17.1.6 { SELECT 'ABCxyz' GLOB 'abc*' } 0
|
|
do_execsql_test e_expr-17.1.7 { SELECT 'abcxyz' GLOB 'ABC*' } 0
|
|
|
|
# EVIDENCE-OF: R-39616-20555 Both GLOB and LIKE may be preceded by the
|
|
# NOT keyword to invert the sense of the test.
|
|
#
|
|
do_execsql_test e_expr-17.2.1 { SELECT 'abcxyz' NOT GLOB 'ABC*' } 1
|
|
do_execsql_test e_expr-17.2.2 { SELECT 'abcxyz' NOT GLOB 'abc*' } 0
|
|
do_execsql_test e_expr-17.2.3 { SELECT 'abcxyz' NOT LIKE 'ABC%' } 0
|
|
do_execsql_test e_expr-17.2.4 { SELECT 'abcxyz' NOT LIKE 'abc%' } 0
|
|
do_execsql_test e_expr-17.2.5 { SELECT 'abdxyz' NOT LIKE 'abc%' } 1
|
|
|
|
db nullvalue null
|
|
do_execsql_test e_expr-17.2.6 { SELECT 'abcxyz' NOT GLOB NULL } null
|
|
do_execsql_test e_expr-17.2.7 { SELECT 'abcxyz' NOT LIKE NULL } null
|
|
do_execsql_test e_expr-17.2.8 { SELECT NULL NOT GLOB 'abc*' } null
|
|
do_execsql_test e_expr-17.2.9 { SELECT NULL NOT LIKE 'ABC%' } null
|
|
db nullvalue {}
|
|
|
|
# EVIDENCE-OF: R-39414-35489 The infix GLOB operator is implemented by
|
|
# calling the function glob(Y,X) and can be modified by overriding that
|
|
# function.
|
|
proc globfunc {args} {
|
|
eval lappend ::globargs $args
|
|
return 1
|
|
}
|
|
db func glob -argcount 2 globfunc
|
|
set ::globargs [list]
|
|
do_execsql_test e_expr-17.3.1 { SELECT 'abc' GLOB 'def' } 1
|
|
do_test e_expr-17.3.2 { set globargs } {def abc}
|
|
set ::globargs [list]
|
|
do_execsql_test e_expr-17.3.3 { SELECT 'X' NOT GLOB 'Y' } 0
|
|
do_test e_expr-17.3.4 { set globargs } {Y X}
|
|
sqlite3 db test.db
|
|
|
|
# EVIDENCE-OF: R-41650-20872 No regexp() user function is defined by
|
|
# default and so use of the REGEXP operator will normally result in an
|
|
# error message.
|
|
#
|
|
# There is a regexp function if ICU is enabled though.
|
|
#
|
|
ifcapable !icu {
|
|
do_catchsql_test e_expr-18.1.1 {
|
|
SELECT regexp('abc', 'def')
|
|
} {1 {no such function: regexp}}
|
|
do_catchsql_test e_expr-18.1.2 {
|
|
SELECT 'abc' REGEXP 'def'
|
|
} {1 {no such function: REGEXP}}
|
|
}
|
|
|
|
# EVIDENCE-OF: R-33693-50180 The REGEXP operator is a special syntax for
|
|
# the regexp() user function.
|
|
#
|
|
# EVIDENCE-OF: R-65524-61849 If an application-defined SQL function
|
|
# named "regexp" is added at run-time, then the "X REGEXP Y" operator
|
|
# will be implemented as a call to "regexp(Y,X)".
|
|
#
|
|
proc regexpfunc {args} {
|
|
eval lappend ::regexpargs $args
|
|
return 1
|
|
}
|
|
db func regexp -argcount 2 regexpfunc
|
|
set ::regexpargs [list]
|
|
do_execsql_test e_expr-18.2.1 { SELECT 'abc' REGEXP 'def' } 1
|
|
do_test e_expr-18.2.2 { set regexpargs } {def abc}
|
|
set ::regexpargs [list]
|
|
do_execsql_test e_expr-18.2.3 { SELECT 'X' NOT REGEXP 'Y' } 0
|
|
do_test e_expr-18.2.4 { set regexpargs } {Y X}
|
|
sqlite3 db test.db
|
|
|
|
# EVIDENCE-OF: R-42037-37826 The default match() function implementation
|
|
# raises an exception and is not really useful for anything.
|
|
#
|
|
do_catchsql_test e_expr-19.1.1 {
|
|
SELECT 'abc' MATCH 'def'
|
|
} {1 {unable to use function MATCH in the requested context}}
|
|
do_catchsql_test e_expr-19.1.2 {
|
|
SELECT match('abc', 'def')
|
|
} {1 {unable to use function MATCH in the requested context}}
|
|
|
|
# EVIDENCE-OF: R-37916-47407 The MATCH operator is a special syntax for
|
|
# the match() application-defined function.
|
|
#
|
|
# EVIDENCE-OF: R-06021-09373 But extensions can override the match()
|
|
# function with more helpful logic.
|
|
#
|
|
proc matchfunc {args} {
|
|
eval lappend ::matchargs $args
|
|
return 1
|
|
}
|
|
db func match -argcount 2 matchfunc
|
|
set ::matchargs [list]
|
|
do_execsql_test e_expr-19.2.1 { SELECT 'abc' MATCH 'def' } 1
|
|
do_test e_expr-19.2.2 { set matchargs } {def abc}
|
|
set ::matchargs [list]
|
|
do_execsql_test e_expr-19.2.3 { SELECT 'X' NOT MATCH 'Y' } 0
|
|
do_test e_expr-19.2.4 { set matchargs } {Y X}
|
|
sqlite3 db test.db
|
|
|
|
#-------------------------------------------------------------------------
|
|
# Test cases for the testable statements related to the CASE expression.
|
|
#
|
|
# EVIDENCE-OF: R-15199-61389 There are two basic forms of the CASE
|
|
# expression: those with a base expression and those without.
|
|
#
|
|
do_execsql_test e_expr-20.1 {
|
|
SELECT CASE WHEN 1 THEN 'true' WHEN 0 THEN 'false' ELSE 'else' END;
|
|
} {true}
|
|
do_execsql_test e_expr-20.2 {
|
|
SELECT CASE 0 WHEN 1 THEN 'true' WHEN 0 THEN 'false' ELSE 'else' END;
|
|
} {false}
|
|
|
|
proc var {nm} {
|
|
lappend ::varlist $nm
|
|
return [set "::$nm"]
|
|
}
|
|
db func var var
|
|
|
|
# EVIDENCE-OF: R-30638-59954 In a CASE without a base expression, each
|
|
# WHEN expression is evaluated and the result treated as a boolean,
|
|
# starting with the leftmost and continuing to the right.
|
|
#
|
|
foreach {a b c} {0 0 0} break
|
|
set varlist [list]
|
|
do_execsql_test e_expr-21.1.1 {
|
|
SELECT CASE WHEN var('a') THEN 'A'
|
|
WHEN var('b') THEN 'B'
|
|
WHEN var('c') THEN 'C' END
|
|
} {{}}
|
|
do_test e_expr-21.1.2 { set varlist } {a b c}
|
|
set varlist [list]
|
|
do_execsql_test e_expr-21.1.3 {
|
|
SELECT CASE WHEN var('c') THEN 'C'
|
|
WHEN var('b') THEN 'B'
|
|
WHEN var('a') THEN 'A'
|
|
ELSE 'no result'
|
|
END
|
|
} {{no result}}
|
|
do_test e_expr-21.1.4 { set varlist } {c b a}
|
|
|
|
# EVIDENCE-OF: R-39009-25596 The result of the CASE expression is the
|
|
# evaluation of the THEN expression that corresponds to the first WHEN
|
|
# expression that evaluates to true.
|
|
#
|
|
foreach {a b c} {0 1 0} break
|
|
do_execsql_test e_expr-21.2.1 {
|
|
SELECT CASE WHEN var('a') THEN 'A'
|
|
WHEN var('b') THEN 'B'
|
|
WHEN var('c') THEN 'C'
|
|
ELSE 'no result'
|
|
END
|
|
} {B}
|
|
foreach {a b c} {0 1 1} break
|
|
do_execsql_test e_expr-21.2.2 {
|
|
SELECT CASE WHEN var('a') THEN 'A'
|
|
WHEN var('b') THEN 'B'
|
|
WHEN var('c') THEN 'C'
|
|
ELSE 'no result'
|
|
END
|
|
} {B}
|
|
foreach {a b c} {0 0 1} break
|
|
do_execsql_test e_expr-21.2.3 {
|
|
SELECT CASE WHEN var('a') THEN 'A'
|
|
WHEN var('b') THEN 'B'
|
|
WHEN var('c') THEN 'C'
|
|
ELSE 'no result'
|
|
END
|
|
} {C}
|
|
|
|
# EVIDENCE-OF: R-24227-04807 Or, if none of the WHEN expressions
|
|
# evaluate to true, the result of evaluating the ELSE expression, if
|
|
# any.
|
|
#
|
|
foreach {a b c} {0 0 0} break
|
|
do_execsql_test e_expr-21.3.1 {
|
|
SELECT CASE WHEN var('a') THEN 'A'
|
|
WHEN var('b') THEN 'B'
|
|
WHEN var('c') THEN 'C'
|
|
ELSE 'no result'
|
|
END
|
|
} {{no result}}
|
|
|
|
# EVIDENCE-OF: R-14168-07579 If there is no ELSE expression and none of
|
|
# the WHEN expressions are true, then the overall result is NULL.
|
|
#
|
|
db nullvalue null
|
|
do_execsql_test e_expr-21.3.2 {
|
|
SELECT CASE WHEN var('a') THEN 'A'
|
|
WHEN var('b') THEN 'B'
|
|
WHEN var('c') THEN 'C'
|
|
END
|
|
} {null}
|
|
db nullvalue {}
|
|
|
|
# EVIDENCE-OF: R-13943-13592 A NULL result is considered untrue when
|
|
# evaluating WHEN terms.
|
|
#
|
|
do_execsql_test e_expr-21.4.1 {
|
|
SELECT CASE WHEN NULL THEN 'A' WHEN 1 THEN 'B' END
|
|
} {B}
|
|
do_execsql_test e_expr-21.4.2 {
|
|
SELECT CASE WHEN 0 THEN 'A' WHEN NULL THEN 'B' ELSE 'C' END
|
|
} {C}
|
|
|
|
# EVIDENCE-OF: R-38620-19499 In a CASE with a base expression, the base
|
|
# expression is evaluated just once and the result is compared against
|
|
# the evaluation of each WHEN expression from left to right.
|
|
#
|
|
# Note: This test case tests the "evaluated just once" part of the above
|
|
# statement. Tests associated with the next two statements test that the
|
|
# comparisons take place.
|
|
#
|
|
foreach {a b c} [list [expr 3] [expr 4] [expr 5]] break
|
|
set ::varlist [list]
|
|
do_execsql_test e_expr-22.1.1 {
|
|
SELECT CASE var('a') WHEN 1 THEN 'A' WHEN 2 THEN 'B' WHEN 3 THEN 'C' END
|
|
} {C}
|
|
do_test e_expr-22.1.2 { set ::varlist } {a}
|
|
|
|
# EVIDENCE-OF: R-07667-49537 The result of the CASE expression is the
|
|
# evaluation of the THEN expression that corresponds to the first WHEN
|
|
# expression for which the comparison is true.
|
|
#
|
|
do_execsql_test e_expr-22.2.1 {
|
|
SELECT CASE 23 WHEN 1 THEN 'A' WHEN 23 THEN 'B' WHEN 23 THEN 'C' END
|
|
} {B}
|
|
do_execsql_test e_expr-22.2.2 {
|
|
SELECT CASE 1 WHEN 1 THEN 'A' WHEN 23 THEN 'B' WHEN 23 THEN 'C' END
|
|
} {A}
|
|
|
|
# EVIDENCE-OF: R-47543-32145 Or, if none of the WHEN expressions
|
|
# evaluate to a value equal to the base expression, the result of
|
|
# evaluating the ELSE expression, if any.
|
|
#
|
|
do_execsql_test e_expr-22.3.1 {
|
|
SELECT CASE 24 WHEN 1 THEN 'A' WHEN 23 THEN 'B' WHEN 23 THEN 'C' ELSE 'D' END
|
|
} {D}
|
|
|
|
# EVIDENCE-OF: R-54721-48557 If there is no ELSE expression and none of
|
|
# the WHEN expressions produce a result equal to the base expression,
|
|
# the overall result is NULL.
|
|
#
|
|
do_execsql_test e_expr-22.4.1 {
|
|
SELECT CASE 24 WHEN 1 THEN 'A' WHEN 23 THEN 'B' WHEN 23 THEN 'C' END
|
|
} {{}}
|
|
db nullvalue null
|
|
do_execsql_test e_expr-22.4.2 {
|
|
SELECT CASE 24 WHEN 1 THEN 'A' WHEN 23 THEN 'B' WHEN 23 THEN 'C' END
|
|
} {null}
|
|
db nullvalue {}
|
|
|
|
# EVIDENCE-OF: R-11479-62774 When comparing a base expression against a
|
|
# WHEN expression, the same collating sequence, affinity, and
|
|
# NULL-handling rules apply as if the base expression and WHEN
|
|
# expression are respectively the left- and right-hand operands of an =
|
|
# operator.
|
|
#
|
|
proc rev {str} {
|
|
set ret ""
|
|
set chars [split $str]
|
|
for {set i [expr [llength $chars]-1]} {$i>=0} {incr i -1} {
|
|
append ret [lindex $chars $i]
|
|
}
|
|
set ret
|
|
}
|
|
proc reverse {lhs rhs} {
|
|
string compare [rev $lhs] [rev $rhs]
|
|
}
|
|
db collate reverse reverse
|
|
do_execsql_test e_expr-23.1.1 {
|
|
CREATE TABLE t1(
|
|
a TEXT COLLATE NOCASE,
|
|
b COLLATE REVERSE,
|
|
c INTEGER,
|
|
d BLOB
|
|
);
|
|
INSERT INTO t1 VALUES('abc', 'cba', 55, 34.5);
|
|
} {}
|
|
do_execsql_test e_expr-23.1.2 {
|
|
SELECT CASE a WHEN 'xyz' THEN 'A' WHEN 'AbC' THEN 'B' END FROM t1
|
|
} {B}
|
|
do_execsql_test e_expr-23.1.3 {
|
|
SELECT CASE 'AbC' WHEN 'abc' THEN 'A' WHEN a THEN 'B' END FROM t1
|
|
} {B}
|
|
do_execsql_test e_expr-23.1.4 {
|
|
SELECT CASE a WHEN b THEN 'A' ELSE 'B' END FROM t1
|
|
} {B}
|
|
do_execsql_test e_expr-23.1.5 {
|
|
SELECT CASE b WHEN a THEN 'A' ELSE 'B' END FROM t1
|
|
} {B}
|
|
do_execsql_test e_expr-23.1.6 {
|
|
SELECT CASE 55 WHEN '55' THEN 'A' ELSE 'B' END
|
|
} {B}
|
|
do_execsql_test e_expr-23.1.7 {
|
|
SELECT CASE c WHEN '55' THEN 'A' ELSE 'B' END FROM t1
|
|
} {A}
|
|
do_execsql_test e_expr-23.1.8 {
|
|
SELECT CASE '34.5' WHEN d THEN 'A' ELSE 'B' END FROM t1
|
|
} {B}
|
|
do_execsql_test e_expr-23.1.9 {
|
|
SELECT CASE NULL WHEN NULL THEN 'A' ELSE 'B' END
|
|
} {B}
|
|
|
|
# EVIDENCE-OF: R-37304-39405 If the base expression is NULL then the
|
|
# result of the CASE is always the result of evaluating the ELSE
|
|
# expression if it exists, or NULL if it does not.
|
|
#
|
|
do_execsql_test e_expr-24.1.1 {
|
|
SELECT CASE NULL WHEN 'abc' THEN 'A' WHEN 'def' THEN 'B' END;
|
|
} {{}}
|
|
do_execsql_test e_expr-24.1.2 {
|
|
SELECT CASE NULL WHEN 'abc' THEN 'A' WHEN 'def' THEN 'B' ELSE 'C' END;
|
|
} {C}
|
|
|
|
# EVIDENCE-OF: R-56280-17369 Both forms of the CASE expression use lazy,
|
|
# or short-circuit, evaluation.
|
|
#
|
|
set varlist [list]
|
|
foreach {a b c} {0 1 0} break
|
|
do_execsql_test e_expr-25.1.1 {
|
|
SELECT CASE WHEN var('a') THEN 'A'
|
|
WHEN var('b') THEN 'B'
|
|
WHEN var('c') THEN 'C'
|
|
END
|
|
} {B}
|
|
do_test e_expr-25.1.2 { set ::varlist } {a b}
|
|
set varlist [list]
|
|
do_execsql_test e_expr-25.1.3 {
|
|
SELECT CASE '0' WHEN var('a') THEN 'A'
|
|
WHEN var('b') THEN 'B'
|
|
WHEN var('c') THEN 'C'
|
|
END
|
|
} {A}
|
|
do_test e_expr-25.1.4 { set ::varlist } {a}
|
|
|
|
# EVIDENCE-OF: R-34773-62253 The only difference between the following
|
|
# two CASE expressions is that the x expression is evaluated exactly
|
|
# once in the first example but might be evaluated multiple times in the
|
|
# second: CASE x WHEN w1 THEN r1 WHEN w2 THEN r2 ELSE r3 END CASE WHEN
|
|
# x=w1 THEN r1 WHEN x=w2 THEN r2 ELSE r3 END
|
|
#
|
|
proc ceval {x} {
|
|
incr ::evalcount
|
|
return $x
|
|
}
|
|
db func ceval ceval
|
|
set ::evalcount 0
|
|
|
|
do_execsql_test e_expr-26.1.1 {
|
|
CREATE TABLE t2(x, w1, r1, w2, r2, r3);
|
|
INSERT INTO t2 VALUES(1, 1, 'R1', 2, 'R2', 'R3');
|
|
INSERT INTO t2 VALUES(2, 1, 'R1', 2, 'R2', 'R3');
|
|
INSERT INTO t2 VALUES(3, 1, 'R1', 2, 'R2', 'R3');
|
|
} {}
|
|
do_execsql_test e_expr-26.1.2 {
|
|
SELECT CASE x WHEN w1 THEN r1 WHEN w2 THEN r2 ELSE r3 END FROM t2
|
|
} {R1 R2 R3}
|
|
do_execsql_test e_expr-26.1.3 {
|
|
SELECT CASE WHEN x=w1 THEN r1 WHEN x=w2 THEN r2 ELSE r3 END FROM t2
|
|
} {R1 R2 R3}
|
|
|
|
do_execsql_test e_expr-26.1.4 {
|
|
SELECT CASE ceval(x) WHEN w1 THEN r1 WHEN w2 THEN r2 ELSE r3 END FROM t2
|
|
} {R1 R2 R3}
|
|
do_test e_expr-26.1.5 { set ::evalcount } {3}
|
|
set ::evalcount 0
|
|
do_execsql_test e_expr-26.1.6 {
|
|
SELECT CASE
|
|
WHEN ceval(x)=w1 THEN r1
|
|
WHEN ceval(x)=w2 THEN r2
|
|
ELSE r3 END
|
|
FROM t2
|
|
} {R1 R2 R3}
|
|
do_test e_expr-26.1.6 { set ::evalcount } {5}
|
|
|
|
|
|
#-------------------------------------------------------------------------
|
|
# Test statements related to CAST expressions.
|
|
#
|
|
# EVIDENCE-OF: R-20854-17109 A CAST conversion is similar to the
|
|
# conversion that takes place when a column affinity is applied to a
|
|
# value except that with the CAST operator the conversion always takes
|
|
# place even if the conversion lossy and irreversible, whereas column
|
|
# affinity only changes the data type of a value if the change is
|
|
# lossless and reversible.
|
|
#
|
|
do_execsql_test e_expr-27.1.1 {
|
|
CREATE TABLE t3(a TEXT, b REAL, c INTEGER);
|
|
INSERT INTO t3 VALUES(X'555655', '1.23abc', 4.5);
|
|
SELECT typeof(a), a, typeof(b), b, typeof(c), c FROM t3;
|
|
} {blob UVU text 1.23abc real 4.5}
|
|
do_execsql_test e_expr-27.1.2 {
|
|
SELECT
|
|
typeof(CAST(X'555655' as TEXT)), CAST(X'555655' as TEXT),
|
|
typeof(CAST('1.23abc' as REAL)), CAST('1.23abc' as REAL),
|
|
typeof(CAST(4.5 as INTEGER)), CAST(4.5 as INTEGER)
|
|
} {text UVU real 1.23 integer 4}
|
|
|
|
# EVIDENCE-OF: R-32434-09092 If the value of expr is NULL, then the
|
|
# result of the CAST expression is also NULL.
|
|
#
|
|
do_expr_test e_expr-27.2.1 { CAST(NULL AS integer) } null {}
|
|
do_expr_test e_expr-27.2.2 { CAST(NULL AS text) } null {}
|
|
do_expr_test e_expr-27.2.3 { CAST(NULL AS blob) } null {}
|
|
do_expr_test e_expr-27.2.4 { CAST(NULL AS number) } null {}
|
|
|
|
# EVIDENCE-OF: R-43522-35548 Casting a value to a type-name with no
|
|
# affinity causes the value to be converted into a BLOB.
|
|
#
|
|
do_expr_test e_expr-27.3.1 { CAST('abc' AS blob) } blob abc
|
|
do_expr_test e_expr-27.3.2 { CAST('def' AS shobblob_x) } blob def
|
|
do_expr_test e_expr-27.3.3 { CAST('ghi' AS abbLOb10) } blob ghi
|
|
|
|
# EVIDENCE-OF: R-22956-37754 Casting to a BLOB consists of first casting
|
|
# the value to TEXT in the encoding of the database connection, then
|
|
# interpreting the resulting byte sequence as a BLOB instead of as TEXT.
|
|
#
|
|
do_qexpr_test e_expr-27.4.1 { CAST('ghi' AS blob) } X'676869'
|
|
do_qexpr_test e_expr-27.4.2 { CAST(456 AS blob) } X'343536'
|
|
do_qexpr_test e_expr-27.4.3 { CAST(1.78 AS blob) } X'312E3738'
|
|
rename db db2
|
|
sqlite3 db :memory:
|
|
ifcapable {utf16} {
|
|
db eval { PRAGMA encoding = 'utf-16le' }
|
|
do_qexpr_test e_expr-27.4.4 { CAST('ghi' AS blob) } X'670068006900'
|
|
do_qexpr_test e_expr-27.4.5 { CAST(456 AS blob) } X'340035003600'
|
|
do_qexpr_test e_expr-27.4.6 { CAST(1.78 AS blob) } X'31002E0037003800'
|
|
}
|
|
db close
|
|
sqlite3 db :memory:
|
|
db eval { PRAGMA encoding = 'utf-16be' }
|
|
ifcapable {utf16} {
|
|
do_qexpr_test e_expr-27.4.7 { CAST('ghi' AS blob) } X'006700680069'
|
|
do_qexpr_test e_expr-27.4.8 { CAST(456 AS blob) } X'003400350036'
|
|
do_qexpr_test e_expr-27.4.9 { CAST(1.78 AS blob) } X'0031002E00370038'
|
|
}
|
|
db close
|
|
rename db2 db
|
|
|
|
# EVIDENCE-OF: R-04207-37981 To cast a BLOB value to TEXT, the sequence
|
|
# of bytes that make up the BLOB is interpreted as text encoded using
|
|
# the database encoding.
|
|
#
|
|
do_expr_test e_expr-28.1.1 { CAST (X'676869' AS text) } text ghi
|
|
do_expr_test e_expr-28.1.2 { CAST (X'670068006900' AS text) } text g
|
|
rename db db2
|
|
sqlite3 db :memory:
|
|
db eval { PRAGMA encoding = 'utf-16le' }
|
|
ifcapable {utf16} {
|
|
do_expr_test e_expr-28.1.3 { CAST (X'676869' AS text) == 'ghi' } integer 0
|
|
do_expr_test e_expr-28.1.4 { CAST (X'670068006900' AS text) } text ghi
|
|
}
|
|
db close
|
|
rename db2 db
|
|
|
|
# EVIDENCE-OF: R-22235-47006 Casting an INTEGER or REAL value into TEXT
|
|
# renders the value as if via sqlite3_snprintf() except that the
|
|
# resulting TEXT uses the encoding of the database connection.
|
|
#
|
|
do_expr_test e_expr-28.2.1 { CAST (1 AS text) } text 1
|
|
do_expr_test e_expr-28.2.2 { CAST (45 AS text) } text 45
|
|
do_expr_test e_expr-28.2.3 { CAST (-45 AS text) } text -45
|
|
do_expr_test e_expr-28.2.4 { CAST (8.8 AS text) } text 8.8
|
|
do_expr_test e_expr-28.2.5 { CAST (2.3e+5 AS text) } text 230000.0
|
|
do_expr_test e_expr-28.2.6 { CAST (-2.3e-5 AS text) } text -2.3e-05
|
|
do_expr_test e_expr-28.2.7 { CAST (0.0 AS text) } text 0.0
|
|
do_expr_test e_expr-28.2.7 { CAST (0 AS text) } text 0
|
|
|
|
# EVIDENCE-OF: R-26346-36443 When casting a BLOB value to a REAL, the
|
|
# value is first converted to TEXT.
|
|
#
|
|
do_expr_test e_expr-29.1.1 { CAST (X'312E3233' AS REAL) } real 1.23
|
|
do_expr_test e_expr-29.1.2 { CAST (X'3233302E30' AS REAL) } real 230.0
|
|
do_expr_test e_expr-29.1.3 { CAST (X'2D392E3837' AS REAL) } real -9.87
|
|
do_expr_test e_expr-29.1.4 { CAST (X'302E30303031' AS REAL) } real 0.0001
|
|
rename db db2
|
|
sqlite3 db :memory:
|
|
ifcapable {utf16} {
|
|
db eval { PRAGMA encoding = 'utf-16le' }
|
|
do_expr_test e_expr-29.1.5 {
|
|
CAST (X'31002E0032003300' AS REAL) } real 1.23
|
|
do_expr_test e_expr-29.1.6 {
|
|
CAST (X'3200330030002E003000' AS REAL) } real 230.0
|
|
do_expr_test e_expr-29.1.7 {
|
|
CAST (X'2D0039002E0038003700' AS REAL) } real -9.87
|
|
do_expr_test e_expr-29.1.8 {
|
|
CAST (X'30002E003000300030003100' AS REAL) } real 0.0001
|
|
}
|
|
db close
|
|
rename db2 db
|
|
|
|
# EVIDENCE-OF: R-54898-34554 When casting a TEXT value to REAL, the
|
|
# longest possible prefix of the value that can be interpreted as a real
|
|
# number is extracted from the TEXT value and the remainder ignored.
|
|
#
|
|
do_expr_test e_expr-29.2.1 { CAST('1.23abcd' AS REAL) } real 1.23
|
|
do_expr_test e_expr-29.2.2 { CAST('1.45.23abcd' AS REAL) } real 1.45
|
|
do_expr_test e_expr-29.2.3 { CAST('-2.12e-01ABC' AS REAL) } real -0.212
|
|
do_expr_test e_expr-29.2.4 { CAST('1 2 3 4' AS REAL) } real 1.0
|
|
|
|
# EVIDENCE-OF: R-11321-47427 Any leading spaces in the TEXT value are
|
|
# ignored when converging from TEXT to REAL.
|
|
#
|
|
do_expr_test e_expr-29.3.1 { CAST(' 1.23abcd' AS REAL) } real 1.23
|
|
do_expr_test e_expr-29.3.2 { CAST(' 1.45.23abcd' AS REAL) } real 1.45
|
|
do_expr_test e_expr-29.3.3 { CAST(' -2.12e-01ABC' AS REAL) } real -0.212
|
|
do_expr_test e_expr-29.3.4 { CAST(' 1 2 3 4' AS REAL) } real 1.0
|
|
|
|
# EVIDENCE-OF: R-22662-28218 If there is no prefix that can be
|
|
# interpreted as a real number, the result of the conversion is 0.0.
|
|
#
|
|
do_expr_test e_expr-29.4.1 { CAST('' AS REAL) } real 0.0
|
|
do_expr_test e_expr-29.4.2 { CAST('not a number' AS REAL) } real 0.0
|
|
do_expr_test e_expr-29.4.3 { CAST('XXI' AS REAL) } real 0.0
|
|
|
|
# EVIDENCE-OF: R-21829-14563 When casting a BLOB value to INTEGER, the
|
|
# value is first converted to TEXT.
|
|
#
|
|
do_expr_test e_expr-30.1.1 { CAST(X'313233' AS INTEGER) } integer 123
|
|
do_expr_test e_expr-30.1.2 { CAST(X'2D363738' AS INTEGER) } integer -678
|
|
do_expr_test e_expr-30.1.3 {
|
|
CAST(X'31303030303030' AS INTEGER)
|
|
} integer 1000000
|
|
do_expr_test e_expr-30.1.4 {
|
|
CAST(X'2D31313235383939393036383432363234' AS INTEGER)
|
|
} integer -1125899906842624
|
|
|
|
rename db db2
|
|
sqlite3 db :memory:
|
|
ifcapable {utf16} {
|
|
execsql { PRAGMA encoding = 'utf-16be' }
|
|
do_expr_test e_expr-30.1.5 { CAST(X'003100320033' AS INTEGER) } integer 123
|
|
do_expr_test e_expr-30.1.6 { CAST(X'002D003600370038' AS INTEGER) } integer -678
|
|
do_expr_test e_expr-30.1.7 {
|
|
CAST(X'0031003000300030003000300030' AS INTEGER)
|
|
} integer 1000000
|
|
do_expr_test e_expr-30.1.8 {
|
|
CAST(X'002D0031003100320035003800390039003900300036003800340032003600320034' AS INTEGER)
|
|
} integer -1125899906842624
|
|
}
|
|
db close
|
|
rename db2 db
|
|
|
|
# EVIDENCE-OF: R-47612-45842 When casting a TEXT value to INTEGER, the
|
|
# longest possible prefix of the value that can be interpreted as an
|
|
# integer number is extracted from the TEXT value and the remainder
|
|
# ignored.
|
|
#
|
|
do_expr_test e_expr-30.2.1 { CAST('123abcd' AS INT) } integer 123
|
|
do_expr_test e_expr-30.2.2 { CAST('14523abcd' AS INT) } integer 14523
|
|
do_expr_test e_expr-30.2.3 { CAST('-2.12e-01ABC' AS INT) } integer -2
|
|
do_expr_test e_expr-30.2.4 { CAST('1 2 3 4' AS INT) } integer 1
|
|
|
|
# EVIDENCE-OF: R-34400-33772 Any leading spaces in the TEXT value when
|
|
# converting from TEXT to INTEGER are ignored.
|
|
#
|
|
do_expr_test e_expr-30.3.1 { CAST(' 123abcd' AS INT) } integer 123
|
|
do_expr_test e_expr-30.3.2 { CAST(' 14523abcd' AS INT) } integer 14523
|
|
do_expr_test e_expr-30.3.3 { CAST(' -2.12e-01ABC' AS INT) } integer -2
|
|
do_expr_test e_expr-30.3.4 { CAST(' 1 2 3 4' AS INT) } integer 1
|
|
|
|
# EVIDENCE-OF: R-43164-44276 If there is no prefix that can be
|
|
# interpreted as an integer number, the result of the conversion is 0.
|
|
#
|
|
do_expr_test e_expr-30.4.1 { CAST('' AS INTEGER) } integer 0
|
|
do_expr_test e_expr-30.4.2 { CAST('not a number' AS INTEGER) } integer 0
|
|
do_expr_test e_expr-30.4.3 { CAST('XXI' AS INTEGER) } integer 0
|
|
|
|
# EVIDENCE-OF: R-08980-53124 The CAST operator understands decimal
|
|
# integers only — conversion of hexadecimal integers stops at
|
|
# the "x" in the "0x" prefix of the hexadecimal integer string and thus
|
|
# result of the CAST is always zero.
|
|
do_expr_test e_expr-30.5.1 { CAST('0x1234' AS INTEGER) } integer 0
|
|
do_expr_test e_expr-30.5.2 { CAST('0X1234' AS INTEGER) } integer 0
|
|
|
|
# EVIDENCE-OF: R-02752-50091 A cast of a REAL value into an INTEGER
|
|
# results in the integer between the REAL value and zero that is closest
|
|
# to the REAL value.
|
|
#
|
|
do_expr_test e_expr-31.1.1 { CAST(3.14159 AS INTEGER) } integer 3
|
|
do_expr_test e_expr-31.1.2 { CAST(1.99999 AS INTEGER) } integer 1
|
|
do_expr_test e_expr-31.1.3 { CAST(-1.99999 AS INTEGER) } integer -1
|
|
do_expr_test e_expr-31.1.4 { CAST(-0.99999 AS INTEGER) } integer 0
|
|
|
|
# EVIDENCE-OF: R-51517-40824 If a REAL is greater than the greatest
|
|
# possible signed integer (+9223372036854775807) then the result is the
|
|
# greatest possible signed integer and if the REAL is less than the
|
|
# least possible signed integer (-9223372036854775808) then the result
|
|
# is the least possible signed integer.
|
|
#
|
|
do_expr_test e_expr-31.2.1 { CAST(2e+50 AS INT) } integer 9223372036854775807
|
|
do_expr_test e_expr-31.2.2 { CAST(-2e+50 AS INT) } integer -9223372036854775808
|
|
do_expr_test e_expr-31.2.3 {
|
|
CAST(-9223372036854775809.0 AS INT)
|
|
} integer -9223372036854775808
|
|
do_expr_test e_expr-31.2.4 {
|
|
CAST(9223372036854775809.0 AS INT)
|
|
} integer 9223372036854775807
|
|
|
|
|
|
# EVIDENCE-OF: R-09295-61337 Casting a TEXT or BLOB value into NUMERIC
|
|
# first does a forced conversion into REAL but then further converts the
|
|
# result into INTEGER if and only if the conversion from REAL to INTEGER
|
|
# is lossless and reversible.
|
|
#
|
|
do_expr_test e_expr-32.1.1 { CAST('45' AS NUMERIC) } integer 45
|
|
do_expr_test e_expr-32.1.2 { CAST('45.0' AS NUMERIC) } integer 45
|
|
do_expr_test e_expr-32.1.3 { CAST('45.2' AS NUMERIC) } real 45.2
|
|
do_expr_test e_expr-32.1.4 { CAST('11abc' AS NUMERIC) } integer 11
|
|
do_expr_test e_expr-32.1.5 { CAST('11.1abc' AS NUMERIC) } real 11.1
|
|
|
|
# EVIDENCE-OF: R-30347-18702 Casting a REAL or INTEGER value to NUMERIC
|
|
# is a no-op, even if a real value could be losslessly converted to an
|
|
# integer.
|
|
#
|
|
do_expr_test e_expr-32.2.1 { CAST(13.0 AS NUMERIC) } real 13.0
|
|
do_expr_test e_expr-32.2.2 { CAST(13.5 AS NUMERIC) } real 13.5
|
|
|
|
do_expr_test e_expr-32.2.3 {
|
|
CAST(-9223372036854775808 AS NUMERIC)
|
|
} integer -9223372036854775808
|
|
do_expr_test e_expr-32.2.4 {
|
|
CAST(9223372036854775807 AS NUMERIC)
|
|
} integer 9223372036854775807
|
|
|
|
# EVIDENCE-OF: R-64550-29191 Note that the result from casting any
|
|
# non-BLOB value into a BLOB and the result from casting any BLOB value
|
|
# into a non-BLOB value may be different depending on whether the
|
|
# database encoding is UTF-8, UTF-16be, or UTF-16le.
|
|
#
|
|
ifcapable {utf16} {
|
|
sqlite3 db1 :memory: ; db1 eval { PRAGMA encoding = 'utf-8' }
|
|
sqlite3 db2 :memory: ; db2 eval { PRAGMA encoding = 'utf-16le' }
|
|
sqlite3 db3 :memory: ; db3 eval { PRAGMA encoding = 'utf-16be' }
|
|
foreach {tn castexpr differs} {
|
|
1 { CAST(123 AS BLOB) } 1
|
|
2 { CAST('' AS BLOB) } 0
|
|
3 { CAST('abcd' AS BLOB) } 1
|
|
|
|
4 { CAST(X'abcd' AS TEXT) } 1
|
|
5 { CAST(X'' AS TEXT) } 0
|
|
} {
|
|
set r1 [db1 eval "SELECT typeof($castexpr), quote($castexpr)"]
|
|
set r2 [db2 eval "SELECT typeof($castexpr), quote($castexpr)"]
|
|
set r3 [db3 eval "SELECT typeof($castexpr), quote($castexpr)"]
|
|
|
|
if {$differs} {
|
|
set res [expr {$r1!=$r2 && $r2!=$r3}]
|
|
} else {
|
|
set res [expr {$r1==$r2 && $r2==$r3}]
|
|
}
|
|
|
|
do_test e_expr-33.1.$tn {set res} 1
|
|
}
|
|
db1 close
|
|
db2 close
|
|
db3 close
|
|
}
|
|
|
|
#-------------------------------------------------------------------------
|
|
# Test statements related to the EXISTS and NOT EXISTS operators.
|
|
#
|
|
catch { db close }
|
|
forcedelete test.db
|
|
sqlite3 db test.db
|
|
|
|
do_execsql_test e_expr-34.1 {
|
|
CREATE TABLE t1(a, b);
|
|
INSERT INTO t1 VALUES(1, 2);
|
|
INSERT INTO t1 VALUES(NULL, 2);
|
|
INSERT INTO t1 VALUES(1, NULL);
|
|
INSERT INTO t1 VALUES(NULL, NULL);
|
|
} {}
|
|
|
|
# EVIDENCE-OF: R-25588-27181 The EXISTS operator always evaluates to one
|
|
# of the integer values 0 and 1.
|
|
#
|
|
# This statement is not tested by itself. Instead, all e_expr-34.* tests
|
|
# following this point explicitly test that specific invocations of EXISTS
|
|
# return either integer 0 or integer 1.
|
|
#
|
|
|
|
# EVIDENCE-OF: R-58553-63740 If executing the SELECT statement specified
|
|
# as the right-hand operand of the EXISTS operator would return one or
|
|
# more rows, then the EXISTS operator evaluates to 1.
|
|
#
|
|
foreach {tn expr} {
|
|
1 { EXISTS ( SELECT a FROM t1 ) }
|
|
2 { EXISTS ( SELECT b FROM t1 ) }
|
|
3 { EXISTS ( SELECT 24 ) }
|
|
4 { EXISTS ( SELECT NULL ) }
|
|
5 { EXISTS ( SELECT a FROM t1 WHERE a IS NULL ) }
|
|
} {
|
|
do_expr_test e_expr-34.2.$tn $expr integer 1
|
|
}
|
|
|
|
# EVIDENCE-OF: R-19673-40972 If executing the SELECT would return no
|
|
# rows at all, then the EXISTS operator evaluates to 0.
|
|
#
|
|
foreach {tn expr} {
|
|
1 { EXISTS ( SELECT a FROM t1 WHERE 0) }
|
|
2 { EXISTS ( SELECT b FROM t1 WHERE a = 5) }
|
|
3 { EXISTS ( SELECT 24 WHERE 0) }
|
|
4 { EXISTS ( SELECT NULL WHERE 1=2) }
|
|
} {
|
|
do_expr_test e_expr-34.3.$tn $expr integer 0
|
|
}
|
|
|
|
# EVIDENCE-OF: R-35109-49139 The number of columns in each row returned
|
|
# by the SELECT statement (if any) and the specific values returned have
|
|
# no effect on the results of the EXISTS operator.
|
|
#
|
|
foreach {tn expr res} {
|
|
1 { EXISTS ( SELECT * FROM t1 ) } 1
|
|
2 { EXISTS ( SELECT *, *, * FROM t1 ) } 1
|
|
3 { EXISTS ( SELECT 24, 25 ) } 1
|
|
4 { EXISTS ( SELECT NULL, NULL, NULL ) } 1
|
|
5 { EXISTS ( SELECT a,b,a||b FROM t1 WHERE a IS NULL ) } 1
|
|
|
|
6 { EXISTS ( SELECT a, a FROM t1 WHERE 0) } 0
|
|
7 { EXISTS ( SELECT b, b, a FROM t1 WHERE a = 5) } 0
|
|
8 { EXISTS ( SELECT 24, 46, 89 WHERE 0) } 0
|
|
9 { EXISTS ( SELECT NULL, NULL WHERE 1=2) } 0
|
|
} {
|
|
do_expr_test e_expr-34.4.$tn $expr integer $res
|
|
}
|
|
|
|
# EVIDENCE-OF: R-10645-12439 In particular, rows containing NULL values
|
|
# are not handled any differently from rows without NULL values.
|
|
#
|
|
foreach {tn e1 e2} {
|
|
1 { EXISTS (SELECT 'not null') } { EXISTS (SELECT NULL) }
|
|
2 { EXISTS (SELECT NULL FROM t1) } { EXISTS (SELECT 'bread' FROM t1) }
|
|
} {
|
|
set res [db one "SELECT $e1"]
|
|
do_expr_test e_expr-34.5.${tn}a $e1 integer $res
|
|
do_expr_test e_expr-34.5.${tn}b $e2 integer $res
|
|
}
|
|
|
|
#-------------------------------------------------------------------------
|
|
# Test statements related to scalar sub-queries.
|
|
#
|
|
|
|
catch { db close }
|
|
forcedelete test.db
|
|
sqlite3 db test.db
|
|
do_test e_expr-35.0 {
|
|
execsql {
|
|
CREATE TABLE t2(a, b);
|
|
INSERT INTO t2 VALUES('one', 'two');
|
|
INSERT INTO t2 VALUES('three', NULL);
|
|
INSERT INTO t2 VALUES(4, 5.0);
|
|
}
|
|
} {}
|
|
|
|
# EVIDENCE-OF: R-00980-39256 A SELECT statement enclosed in parentheses
|
|
# may appear as a scalar quantity.
|
|
#
|
|
# EVIDENCE-OF: R-56294-03966 All types of SELECT statement, including
|
|
# aggregate and compound SELECT queries (queries with keywords like
|
|
# UNION or EXCEPT) are allowed as scalar subqueries.
|
|
#
|
|
do_expr_test e_expr-35.1.1 { (SELECT 35) } integer 35
|
|
do_expr_test e_expr-35.1.2 { (SELECT NULL) } null {}
|
|
|
|
do_expr_test e_expr-35.1.3 { (SELECT count(*) FROM t2) } integer 3
|
|
do_expr_test e_expr-35.1.4 { (SELECT 4 FROM t2) } integer 4
|
|
|
|
do_expr_test e_expr-35.1.5 {
|
|
(SELECT b FROM t2 UNION SELECT a+1 FROM t2)
|
|
} null {}
|
|
do_expr_test e_expr-35.1.6 {
|
|
(SELECT a FROM t2 UNION SELECT COALESCE(b, 55) FROM t2 ORDER BY 1)
|
|
} integer 4
|
|
|
|
# EVIDENCE-OF: R-46899-53765 A SELECT used as a scalar quantity must
|
|
# return a result set with a single column.
|
|
#
|
|
# The following block tests that errors are returned in a bunch of cases
|
|
# where a subquery returns more than one column.
|
|
#
|
|
set M {only a single result allowed for a SELECT that is part of an expression}
|
|
foreach {tn sql} {
|
|
1 { SELECT (SELECT * FROM t2 UNION SELECT a+1, b+1 FROM t2) }
|
|
2 { SELECT (SELECT * FROM t2 UNION SELECT a+1, b+1 FROM t2 ORDER BY 1) }
|
|
3 { SELECT (SELECT 1, 2) }
|
|
4 { SELECT (SELECT NULL, NULL, NULL) }
|
|
5 { SELECT (SELECT * FROM t2) }
|
|
6 { SELECT (SELECT * FROM (SELECT 1, 2, 3)) }
|
|
} {
|
|
do_catchsql_test e_expr-35.2.$tn $sql [list 1 $M]
|
|
}
|
|
|
|
# EVIDENCE-OF: R-35764-28041 The result of the expression is the value
|
|
# of the only column in the first row returned by the SELECT statement.
|
|
#
|
|
# EVIDENCE-OF: R-41898-06686 If the SELECT yields more than one result
|
|
# row, all rows after the first are ignored.
|
|
#
|
|
do_execsql_test e_expr-36.3.1 {
|
|
CREATE TABLE t4(x, y);
|
|
INSERT INTO t4 VALUES(1, 'one');
|
|
INSERT INTO t4 VALUES(2, 'two');
|
|
INSERT INTO t4 VALUES(3, 'three');
|
|
} {}
|
|
|
|
foreach {tn expr restype resval} {
|
|
2 { ( SELECT x FROM t4 ORDER BY x ) } integer 1
|
|
3 { ( SELECT x FROM t4 ORDER BY y ) } integer 1
|
|
4 { ( SELECT x FROM t4 ORDER BY x DESC ) } integer 3
|
|
5 { ( SELECT x FROM t4 ORDER BY y DESC ) } integer 2
|
|
6 { ( SELECT y FROM t4 ORDER BY y DESC ) } text two
|
|
|
|
7 { ( SELECT sum(x) FROM t4 ) } integer 6
|
|
8 { ( SELECT group_concat(y,'') FROM t4 ) } text onetwothree
|
|
9 { ( SELECT max(x) FROM t4 WHERE y LIKE '___') } integer 2
|
|
|
|
} {
|
|
do_expr_test e_expr-36.3.$tn $expr $restype $resval
|
|
}
|
|
|
|
# EVIDENCE-OF: R-25492-41572 If the SELECT yields no rows, then the
|
|
# value of the expression is NULL.
|
|
#
|
|
foreach {tn expr} {
|
|
1 { ( SELECT x FROM t4 WHERE x>3 ORDER BY x ) }
|
|
2 { ( SELECT x FROM t4 WHERE y<'one' ORDER BY y ) }
|
|
} {
|
|
do_expr_test e_expr-36.4.$tn $expr null {}
|
|
}
|
|
|
|
# EVIDENCE-OF: R-62477-06476 For example, the values NULL, 0.0, 0,
|
|
# 'english' and '0' are all considered to be false.
|
|
#
|
|
do_execsql_test e_expr-37.1 {
|
|
SELECT CASE WHEN NULL THEN 'true' ELSE 'false' END;
|
|
} {false}
|
|
do_execsql_test e_expr-37.2 {
|
|
SELECT CASE WHEN 0.0 THEN 'true' ELSE 'false' END;
|
|
} {false}
|
|
do_execsql_test e_expr-37.3 {
|
|
SELECT CASE WHEN 0 THEN 'true' ELSE 'false' END;
|
|
} {false}
|
|
do_execsql_test e_expr-37.4 {
|
|
SELECT CASE WHEN 'engligh' THEN 'true' ELSE 'false' END;
|
|
} {false}
|
|
do_execsql_test e_expr-37.5 {
|
|
SELECT CASE WHEN '0' THEN 'true' ELSE 'false' END;
|
|
} {false}
|
|
|
|
# EVIDENCE-OF: R-55532-10108 Values 1, 1.0, 0.1, -0.1 and '1english' are
|
|
# considered to be true.
|
|
#
|
|
do_execsql_test e_expr-37.6 {
|
|
SELECT CASE WHEN 1 THEN 'true' ELSE 'false' END;
|
|
} {true}
|
|
do_execsql_test e_expr-37.7 {
|
|
SELECT CASE WHEN 1.0 THEN 'true' ELSE 'false' END;
|
|
} {true}
|
|
do_execsql_test e_expr-37.8 {
|
|
SELECT CASE WHEN 0.1 THEN 'true' ELSE 'false' END;
|
|
} {true}
|
|
do_execsql_test e_expr-37.9 {
|
|
SELECT CASE WHEN -0.1 THEN 'true' ELSE 'false' END;
|
|
} {true}
|
|
do_execsql_test e_expr-37.10 {
|
|
SELECT CASE WHEN '1english' THEN 'true' ELSE 'false' END;
|
|
} {true}
|
|
|
|
|
|
finish_test
|