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Merge in MWL#68: Subquery optimization: Efficient NOT IN execution with NULLs

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2010-03-15 21:52:58 +02:00
parent 816a579f6f 3d2a74609a
commit f59d1dcf0a
26 changed files with 2426 additions and 253 deletions
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7
sql/sql_select.cc
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@ -874,6 +874,9 @@ JOIN::optimize()
{
DBUG_PRINT("info",("No tables"));
error= 0;
/* Create all structures needed for materialized subquery execution. */
if (setup_subquery_materialization())
DBUG_RETURN(1);
DBUG_RETURN(0);
}
error= -1; // Error is sent to client
@ -11258,7 +11261,7 @@ create_tmp_table(THD *thd,TMP_TABLE_PARAM *param,List<Item> &fields,
param->group_buff=group_buff;
share->keys=1;
share->uniques= test(using_unique_constraint);
table->key_info=keyinfo;
table->key_info= table->s->key_info= keyinfo;
keyinfo->key_part=key_part_info;
keyinfo->flags=HA_NOSAME;
keyinfo->usable_key_parts=keyinfo->key_parts= param->group_parts;
@ -11344,7 +11347,7 @@ create_tmp_table(THD *thd,TMP_TABLE_PARAM *param,List<Item> &fields,
keyinfo->key_parts * sizeof(KEY_PART_INFO))))
goto err;
bzero((void*) key_part_info, keyinfo->key_parts * sizeof(KEY_PART_INFO));
table->key_info=keyinfo;
table->key_info= table->s->key_info= keyinfo;
keyinfo->key_part=key_part_info;
keyinfo->flags=HA_NOSAME | HA_NULL_ARE_EQUAL;
keyinfo->key_length= 0; // Will compute the sum of the parts below.