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type_blob.result, func_system.result, func_str.result, ctype_collate.result:

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fixing test results accordingly.
func_system.test:
  New test that illegal mix of collations does not happen anymore.
item_strfunc.h:
    safe_charset_converter() was added for system constants.
item_strfunc.cc:
  safe_charset_converter() was added for system constants.
item_func.cc, item.h, item.cc:
  Bug#8291: Illegal collation mix with USER() function.
  After discussion with PeterG and Serge, a new coercibility
  level for "system constants" was introduced, between
  COERRIBLE and IMPLICIT. Thus:
  SELECT col1 = USER() FROM t1; - is done according to col1 collation.
  SELECT 'string' = USER(); - is done according to USER() collation.
  At the same time, "nagg" and "strong" members were removed as unused.
item_create.cc:
  Version is a system constant too.
This commit is contained in:
bar@mysql.com
2005-03-04 14:20:49 +04:00
parent 0f3b5b7ccb
commit 7e8e033290
11 changed files with 87 additions and 57 deletions
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9
mysql-test/t/func_system.test
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@@ -30,3 +30,12 @@ show create table t1;
drop table t1;
select TRUE,FALSE,NULL;
#
# Bug#8291 Illegal collation mix with USER() function
#
create table t1 (a char(10)) character set latin1;
select * from t1 where a=version();
select * from t1 where a=database();
select * from t1 where a=user();
drop table t1;