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e2ded829f6
any amount of leading or trailing whitespace (where "whitespace" is defined by isspace()). This is for SQL conformance, as well as consistency with other numeric types (e.g. oid, numeric). Also refactor pg_atoi() to avoid looking at errno where not necessary, and add a bunch of regression tests for the input to these types.
110 lines
2.8 KiB
SQL
110 lines
2.8 KiB
SQL
--
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-- INT4
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-- WARNING: int4 operators never check for over/underflow!
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-- Some of these answers are consequently numerically incorrect.
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--
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CREATE TABLE INT4_TBL(f1 int4);
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INSERT INTO INT4_TBL(f1) VALUES (' 0 ');
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INSERT INTO INT4_TBL(f1) VALUES ('123456 ');
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INSERT INTO INT4_TBL(f1) VALUES (' -123456');
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INSERT INTO INT4_TBL(f1) VALUES ('34.5');
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-- largest and smallest values
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INSERT INTO INT4_TBL(f1) VALUES ('2147483647');
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INSERT INTO INT4_TBL(f1) VALUES ('-2147483647');
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-- bad input values -- should give errors
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INSERT INTO INT4_TBL(f1) VALUES ('1000000000000');
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INSERT INTO INT4_TBL(f1) VALUES ('asdf');
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INSERT INTO INT4_TBL(f1) VALUES (' ');
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INSERT INTO INT4_TBL(f1) VALUES (' asdf ');
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INSERT INTO INT4_TBL(f1) VALUES ('- 1234');
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INSERT INTO INT4_TBL(f1) VALUES ('123 5');
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INSERT INTO INT4_TBL(f1) VALUES ('');
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SELECT '' AS five, INT4_TBL.*;
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SELECT '' AS four, i.* FROM INT4_TBL i WHERE i.f1 <> int2 '0';
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SELECT '' AS four, i.* FROM INT4_TBL i WHERE i.f1 <> int4 '0';
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SELECT '' AS one, i.* FROM INT4_TBL i WHERE i.f1 = int2 '0';
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SELECT '' AS one, i.* FROM INT4_TBL i WHERE i.f1 = int4 '0';
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SELECT '' AS two, i.* FROM INT4_TBL i WHERE i.f1 < int2 '0';
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SELECT '' AS two, i.* FROM INT4_TBL i WHERE i.f1 < int4 '0';
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SELECT '' AS three, i.* FROM INT4_TBL i WHERE i.f1 <= int2 '0';
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SELECT '' AS three, i.* FROM INT4_TBL i WHERE i.f1 <= int4 '0';
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SELECT '' AS two, i.* FROM INT4_TBL i WHERE i.f1 > int2 '0';
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SELECT '' AS two, i.* FROM INT4_TBL i WHERE i.f1 > int4 '0';
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SELECT '' AS three, i.* FROM INT4_TBL i WHERE i.f1 >= int2 '0';
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SELECT '' AS three, i.* FROM INT4_TBL i WHERE i.f1 >= int4 '0';
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-- positive odds
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SELECT '' AS one, i.* FROM INT4_TBL i WHERE (i.f1 % int2 '2') = int2 '1';
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-- any evens
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SELECT '' AS three, i.* FROM INT4_TBL i WHERE (i.f1 % int4 '2') = int2 '0';
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SELECT '' AS five, i.f1, i.f1 * int2 '2' AS x FROM INT4_TBL i;
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SELECT '' AS five, i.f1, i.f1 * int4 '2' AS x FROM INT4_TBL i;
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SELECT '' AS five, i.f1, i.f1 + int2 '2' AS x FROM INT4_TBL i;
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SELECT '' AS five, i.f1, i.f1 + int4 '2' AS x FROM INT4_TBL i;
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SELECT '' AS five, i.f1, i.f1 - int2 '2' AS x FROM INT4_TBL i;
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SELECT '' AS five, i.f1, i.f1 - int4 '2' AS x FROM INT4_TBL i;
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SELECT '' AS five, i.f1, i.f1 / int2 '2' AS x FROM INT4_TBL i;
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SELECT '' AS five, i.f1, i.f1 / int4 '2' AS x FROM INT4_TBL i;
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--
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-- more complex expressions
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--
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-- variations on unary minus parsing
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SELECT -2+3 AS one;
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SELECT 4-2 AS two;
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SELECT 2- -1 AS three;
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SELECT 2 - -2 AS four;
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SELECT int2 '2' * int2 '2' = int2 '16' / int2 '4' AS true;
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SELECT int4 '2' * int2 '2' = int2 '16' / int4 '4' AS true;
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SELECT int2 '2' * int4 '2' = int4 '16' / int2 '4' AS true;
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SELECT int4 '1000' < int4 '999' AS false;
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SELECT 4! AS twenty_four;
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SELECT !!3 AS six;
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SELECT 1 + 1 + 1 + 1 + 1 + 1 + 1 + 1 + 1 + 1 AS ten;
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SELECT 2 + 2 / 2 AS three;
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SELECT (2 + 2) / 2 AS two;
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