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Bug #27530:

Browse source 
The function CRC32() returns unsigned integer.
But the metadata (the unsigned flag) for the 
function was set incorrectly.
As a result type arithmetics based on the 
function's metadata (like finding the concise
type of an temporary table column to hold the result)
returned incorrect results.
Fixed by returning correct type information.

This fix is based on code contributed by Martin Friebe
(martin@hybyte.com) on 2007-03-30.  


mysql-test/r/func_str.result:
  Bug #27530: test case
mysql-test/t/func_str.test:
  Bug #27530: test case
sql/item_strfunc.h:
  Bug #27530: Marked CRC32() as returning unsigned
This commit is contained in:
unknown 2007-04-11 13:58:16 +03:00
commit 8fe487beba
5 changed files with 161 additions and 1 deletions
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69
mysql-test/r/func_str.result
View file

@ -1992,4 +1992,73 @@ abc
SELECT INSERT('abc', 6, 3, '1234');
INSERT('abc', 6, 3, '1234')
abc
CREATE TABLE t1 (a INT);
CREATE VIEW v1 AS SELECT CRC32(a) AS C FROM t1;
INSERT INTO t1 VALUES (1),(2),(3),(4),(5),(6),(7),(8),(9),(10);
SELECT CRC32(a), COUNT(*) FROM t1 GROUP BY 1;
CRC32(a) COUNT(*)
450215437 1
498629140 1
1790921346 1
1842515611 1
2212294583 1
2226203566 1
2366072709 1
2707236321 1
4088798008 1
4194326291 1
SELECT CRC32(a), COUNT(*) FROM t1 GROUP BY 1 ORDER BY 1;
CRC32(a) COUNT(*)
450215437 1
498629140 1
1790921346 1
1842515611 1
2212294583 1
2226203566 1
2366072709 1
2707236321 1
4088798008 1
4194326291 1
SELECT * FROM (SELECT CRC32(a) FROM t1) t2;
CRC32(a)
2212294583
450215437
1842515611
4088798008
2226203566
498629140
1790921346
4194326291
2366072709
2707236321
CREATE TABLE t2 SELECT CRC32(a) FROM t1;
desc t2;
Field Type Null Key Default Extra
CRC32(a) int(10) unsigned YES NULL
SELECT * FROM v1;
C
2212294583
450215437
1842515611
4088798008
2226203566
498629140
1790921346
4194326291
2366072709
2707236321
SELECT * FROM (SELECT * FROM v1) x;
C
2212294583
450215437
1842515611
4088798008
2226203566
498629140
1790921346
4194326291
2366072709
2707236321
DROP TABLE t1, t2;
DROP VIEW v1;
End of 5.0 tests