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An after-fix for MDEV-6146 Can't mix (latin1_swedish_ci,NUMERIC) and (utf8_unicode_ci,IMPLICIT) for MATCH

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The original patch broke "mtr --ps fulltext".
This commit is contained in:
Alexander Barkov 2014-04-29 14:38:01 +04:00
parent f467f4bb93
commit f137be800e
1 changed files with 22 additions and 2 deletions
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24
sql/item_func.cc
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@ -6264,16 +6264,37 @@ bool Item_func_match::fix_fields(THD *thd, Item **ref)
}
const_item_cache=0;
table= 0;
for (uint i=1 ; i < arg_count ; i++)
{
item=args[i];
if (item->type() == Item::REF_ITEM)
args[i]= item= *((Item_ref *)item)->ref;
if (item->type() != Item::FIELD_ITEM)
/*
When running in PS mode, some Item_field's can already be replaced
to Item_func_conv_charset during PREPARE time. This is possible
in case of "MATCH (f1,..,fN) AGAINST (... IN BOOLEAN MODE)"
when running without any fulltext indexes and when fields f1..fN
have different character sets.
So we check for FIELD_ITEM only during prepare time and in non-PS mode,
and do not check in PS execute time.
*/
if (!thd->stmt_arena->is_stmt_execute() &&
item->type() != Item::FIELD_ITEM)
{
my_error(ER_WRONG_ARGUMENTS, MYF(0), "AGAINST");
return TRUE;
}
/*
During the prepare-time execution of fix_fields() of a PS query some
Item_fields's could have been already replaced to Item_func_conv_charset
(by the call for agg_arg_charsets_for_comparison below()).
But agg_arg_charsets_for_comparison() is written in a way that
at least *one* of the Item_field's is not replaced.
This makes sure that "table" gets initialized during PS execution time.
*/
if (item->type() == Item::FIELD_ITEM)
table= ((Item_field *)item)->field->table;
}
/*
Check that all columns come from the same table.
@ -6288,7 +6309,6 @@ bool Item_func_match::fix_fields(THD *thd, Item **ref)
my_error(ER_WRONG_ARGUMENTS,MYF(0),"MATCH");
return TRUE;
}
table=((Item_field *)item)->field->table;
if (!(table->file->ha_table_flags() & HA_CAN_FULLTEXT))
{
my_error(ER_TABLE_CANT_HANDLE_FT, MYF(0));