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Merge next-mr -> next-4284.

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This commit is contained in:
Konstantin Osipov
2009-12-15 22:59:07 +03:00
parent 5e57d0916c 408dd52a6a
commit e931ef415a
69 changed files with 951 additions and 215 deletions
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34
sql/sql_parse.cc
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@ -7614,3 +7614,37 @@ bool parse_sql(THD *thd,
/**
@} (end of group Runtime_Environment)
*/
/**
Check and merge "CHARACTER SET cs [ COLLATE cl ]" clause
@param cs character set pointer.
@param cl collation pointer.
Check if collation "cl" is applicable to character set "cs".
If "cl" is NULL (e.g. when COLLATE clause is not specified),
then simply "cs" is returned.
@return Error status.
@retval NULL, if "cl" is not applicable to "cs".
@retval pointer to merged CHARSET_INFO on success.
*/
CHARSET_INFO*
merge_charset_and_collation(CHARSET_INFO *cs, CHARSET_INFO *cl)
{
if (cl)
{
if (!my_charset_same(cs, cl))
{
my_error(ER_COLLATION_CHARSET_MISMATCH, MYF(0), cl->name, cs->csname);
return NULL;
}
return cl;
}
return cs;
}