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fixed bug in mysql-test/create-test-result
fixed bug in union-subselect engine
This commit is contained in:
bell@sanja.is.com.ua
2002-09-26 23:08:22 +03:00
parent d9989c635e
commit 46a22a5be7
36 changed files with 607 additions and 457 deletions
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23
sql/sql_derived.cc
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@ -28,7 +28,8 @@
static const char *any_db="*any*"; // Special symbol for check_access
int mysql_derived(THD *thd, LEX *lex, SELECT_LEX_UNIT *unit, TABLE_LIST *t)
int mysql_derived(THD *thd, LEX *lex, SELECT_LEX_UNIT *unit, TABLE_LIST *t,
bool tables_is_opened)
{
/*
TODO: make derived tables with union inside (now only 1 SELECT may be
@ -37,7 +38,7 @@ int mysql_derived(THD *thd, LEX *lex, SELECT_LEX_UNIT *unit, TABLE_LIST *t)
SELECT_LEX *sl= unit->first_select();
List<Item> item_list;
TABLE *table;
int res;
int res= 0;
select_union *derived_result;
TABLE_LIST *tables= (TABLE_LIST *)sl->table_list.first;
TMP_TABLE_PARAM tmp_table_param;
@ -56,7 +57,8 @@ int mysql_derived(THD *thd, LEX *lex, SELECT_LEX_UNIT *unit, TABLE_LIST *t)
{
if (cursor->derived)
{
res=mysql_derived(thd, lex, (SELECT_LEX_UNIT *)cursor->derived, cursor);
res=mysql_derived(thd, lex, (SELECT_LEX_UNIT *)cursor->derived,
cursor, 0);
if (res) DBUG_RETURN(res);
}
}
@ -66,7 +68,7 @@ int mysql_derived(THD *thd, LEX *lex, SELECT_LEX_UNIT *unit, TABLE_LIST *t)
while ((item= it++))
item_list.push_back(item);
if (!(res=open_and_lock_tables(thd,tables)))
if (tables_is_opened || !(res=open_and_lock_tables(thd,tables)))
{
if (tables && setup_fields(thd,tables,item_list,0,0,1))
{
@ -94,12 +96,12 @@ int mysql_derived(THD *thd, LEX *lex, SELECT_LEX_UNIT *unit, TABLE_LIST *t)
if (unit->select_limit_cnt == HA_POS_ERROR)
sl->options&= ~OPTION_FOUND_ROWS;
res=mysql_select(thd, tables, sl->item_list,
sl->where, (ORDER *) sl->order_list.first,
(ORDER*) sl->group_list.first,
sl->having, (ORDER*) NULL,
sl->options | thd->options | SELECT_NO_UNLOCK,
derived_result, unit, 0);
res= mysql_select(thd, tables, sl->item_list,
sl->where, (ORDER *) sl->order_list.first,
(ORDER*) sl->group_list.first,
sl->having, (ORDER*) NULL,
sl->options | thd->options | SELECT_NO_UNLOCK,
derived_result, unit, sl, 0);
if (!res)
{
// Here we entirely fix both TABLE_LIST and list of SELECT's as there were no derived tables
@ -109,6 +111,7 @@ int mysql_derived(THD *thd, LEX *lex, SELECT_LEX_UNIT *unit, TABLE_LIST *t)
{
t->real_name=table->real_name;
t->table=table;
table->derived_select_number= sl->select_number;
sl->exclude();
t->derived=(SELECT_LEX *)0; // just in case ...
}