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Bug #28550 "Potential bugs related to the return type of the CHAR function".

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Since, as of MySQL 5.0.15, CHAR() arguments larger than 255 are converted into multiple result bytes, a single CHAR() argument can now take up to 4 bytes. This patch fixes Item_func_char::fix_length_and_dec() to take this into account.
  
This patch also fixes a regression introduced by the patch for bug21513. As now we do not always have the 'name' member of Item set for Item_hex_string and Item_bin_string, an own print() method has been added to Item_hex_string so that it could correctly be printed by Item_func::print_args().
This commit is contained in:
kaa@polly.(none)
2007-10-21 21:45:31 +04:00
parent 7f67efccef
commit 349841118f
5 changed files with 38 additions and 2 deletions
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12
mysql-test/r/func_str.result
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@ -726,7 +726,7 @@ t1 CREATE TABLE `t1` (
`oct(130)` varchar(64) NOT NULL default '',
`conv(130,16,10)` varchar(64) NOT NULL default '',
`hex(130)` varchar(6) NOT NULL default '',
`char(130)` varbinary(1) NOT NULL default '',
`char(130)` varbinary(4) NOT NULL default '',
`format(130,10)` varchar(4) NOT NULL default '',
`left(_latin2'a',1)` varchar(1) character set latin2 NOT NULL default '',
`right(_latin2'a',1)` varchar(1) character set latin2 NOT NULL default '',
@ -2153,4 +2153,14 @@ SUBSTR(a,1,len)
ba
DROP TABLE t1;
CREATE TABLE t1 AS SELECT CHAR(0x414243) as c1;
SELECT HEX(c1) from t1;
HEX(c1)
414243
DROP TABLE t1;
CREATE VIEW v1 AS SELECT CHAR(0x414243) as c1;
SELECT HEX(c1) from v1;
HEX(c1)
414243
DROP VIEW v1;
End of 5.0 tests