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7e8e033290
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.
41 lines
1 KiB
Text
41 lines
1 KiB
Text
#
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# system functions
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#
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select database();
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select charset(database());
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select database() = "test";
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select database() = _utf8"test";
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select database() = _latin1"test";
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select user() like "%@%";
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select user() like _utf8"%@%";
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select user() like _latin1"%@%";
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select charset(user());
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select version()>="3.23.29";
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select version()>=_utf8"3.23.29";
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select version()>=_latin1"3.23.29";
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select charset(version());
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explain extended select database(), user();
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create table t1 (version char(40)) select database(), user(), version() as 'version';
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show create table t1;
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drop table t1;
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select charset(charset(_utf8'a')), charset(collation(_utf8'a'));
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select collation(charset(_utf8'a')), collation(collation(_utf8'a'));
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create table t1 select charset(_utf8'a'), collation(_utf8'a');
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show create table t1;
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drop table t1;
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select TRUE,FALSE,NULL;
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#
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# Bug#8291 Illegal collation mix with USER() function
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#
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create table t1 (a char(10)) character set latin1;
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select * from t1 where a=version();
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select * from t1 where a=database();
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select * from t1 where a=user();
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drop table t1;
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