63 lines
1.6 KiB
Plaintext
63 lines
1.6 KiB
Plaintext
# 2002 May 24
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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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# This file implements regression tests for SQLite library.
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#
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# This file implements tests for joins, including outer joins, where
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# there are a large number of tables involved in the join.
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#
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# $Id: join3.test,v 1.4 2005/01/19 23:24:51 drh Exp $
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set testdir [file dirname $argv0]
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source $testdir/tester.tcl
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# An unrestricted join
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#
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catch {unset ::result}
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set result {}
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for {set N 1} {$N<=$bitmask_size} {incr N} {
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lappend result $N
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do_test join3-1.$N {
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execsql "CREATE TABLE t${N}(x);"
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execsql "INSERT INTO t$N VALUES($N)"
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set sql "SELECT * FROM t1"
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for {set i 2} {$i<=$N} {incr i} {append sql ", t$i"}
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execsql $sql
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} $result
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}
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# Joins with a comparison
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#
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set result {}
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for {set N 1} {$N<=$bitmask_size} {incr N} {
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lappend result $N
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do_test join3-2.$N {
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set sql "SELECT * FROM t1"
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for {set i 2} {$i<=$N} {incr i} {append sql ", t$i"}
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set sep WHERE
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for {set i 1} {$i<$N} {incr i} {
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append sql " $sep t[expr {$i+1}].x==t$i.x+1"
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set sep AND
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}
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execsql $sql
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} $result
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}
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# Error of too many tables in the join
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#
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do_test join3-3.1 {
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set sql "SELECT * FROM t1 AS t0, t1"
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for {set i 2} {$i<=$bitmask_size} {incr i} {append sql ", t$i"}
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catchsql $sql
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} [list 1 "at most $bitmask_size tables in a join"]
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finish_test
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