Fixed bug #12762:

allowed set functions aggregated in outer subqueries, allowed nested set functions.


mysql-test/r/func_gconcat.result:
  Changed a query when fixing bug #12762.
mysql-test/r/subselect.result:
  Added test cases for bug #12762.
  Allowed set functions aggregated in outer subqueries. Allowed nested set functions.
mysql-test/t/func_gconcat.test:
  Changed a query when fixing bug #12762.
mysql-test/t/subselect.test:
  Added test cases for bug #12762.
  Allowed set functions aggregated in outer subqueries. Allowed nested set functions.
sql/item.cc:
  Fixed bug #12762:
  allowed set functions aggregated in outer subqueries, allowed nested set functions.
  Added a parameter to Item::split_sum_func2 aliowing to defer splitting for set functions
  aggregated in outer subquries.
  Changed Item_field::fix_fields to calculate attributes used when checking context conditions
  for set functions.
  Allowed alliases for set functions defined in outer subqueries.
sql/item.h:
  Fixed bug #12762:
  allowed set functions aggregated in outer subqueries, allowed nested set functions.
  Added a parameter to Item::split_sum_func2 aliowing to defer splitting for set functions
  aggregated in outer subquries.
sql/item_cmpfunc.cc:
  Fixed bug #12762:
  allowed set functions aggregated in outer subqueries, allowed nested set functions.
  Added a parameter to Item::split_sum_func2 aliowing to defer splitting for set functions
  aggregated in outer subquries.
sql/item_func.cc:
  Fixed bug #12762:
  allowed set functions aggregated in outer subqueries, allowed nested set functions.
  Added a parameter to Item::split_sum_func2 aliowing to defer splitting for set functions
  aggregated in outer subquries.
sql/item_row.cc:
  Fixed bug #12762:
  allowed set functions aggregated in outer subqueries, allowed nested set functions.
  Added a parameter to Item::split_sum_func2 aliowing to defer splitting for set functions
  aggregated in outer subquries.
sql/item_strfunc.cc:
  Fixed bug #12762:
  allowed set functions aggregated in outer subqueries, allowed nested set functions.
  Added a parameter to Item::split_sum_func2 aliowing to defer splitting for set functions
  aggregated in outer subquries.
sql/item_subselect.cc:
  Fixed bug #12762:
  allowed set functions aggregated in outer subqueries, allowed nested set functions.
  Introduced next levels for subqueries and a bitmap of nesting levels showing
  in what subqueries a set function can be aggregated.
sql/item_sum.cc:
  Fixed bug #12762:
  allowed set functions aggregated in outer subqueries, allowed nested set functions.
  Added Item_sum methods to check context conditions imposed on set functions.
sql/item_sum.h:
  Fixed bug #12762:
  allowed set functions aggregated in outer subqueries, allowed nested set functions.
  Added Item_sum methods to check context conditions imposed on set functions.
sql/mysql_priv.h:
  Fixed bug #12762:
  allowed set functions aggregated in outer subqueries, allowed nested set functions.
  Introduced a type of bitmaps to be used for nesting constructs.
sql/sql_base.cc:
  Fixed bug #12762:
  allowed set functions aggregated in outer subqueries, allowed nested set functions.
  Introduced next levels for subqueries and a bitmap of nesting levels showing
  in what subqueries a set function can be aggregated.
sql/sql_class.cc:
  Fixed bug #12762:
  allowed set functions aggregated in outer subqueries, allowed nested set functions.
  Introduced a bitmap of nesting levels showing in what subqueries a set function can be aggregated.
sql/sql_class.h:
  Fixed bug #12762:
  allowed set functions aggregated in outer subqueries, allowed nested set functions.
  Introduced a bitmap of nesting levels showing in what subqueries a set function can be aggregated.
sql/sql_delete.cc:
  Fixed bug #12762:
  allowed set functions aggregated in outer subqueries, allowed nested set functions.
  Introduced a bitmap of nesting levels showing in what subqueries a set function can be aggregated.
sql/sql_lex.cc:
  Fixed bug #12762:
  allowed set functions aggregated in outer subqueries, allowed nested set functions.
  Introduced next levels for subqueries and a bitmap of nesting levels showing
  in what subqueries a set function can be aggregated.
sql/sql_lex.h:
  Fixed bug #12762:
  allowed set functions aggregated in outer subqueries, allowed nested set functions.
  Introduced next levels for subqueries and a bitmap of nesting levels showing
  in what subqueries a set function can be aggregated.
sql/sql_parse.cc:
  Fixed bug #12762:
  allowed set functions aggregated in outer subqueries, allowed nested set functions.
  Introduced next levels for subqueries.
sql/sql_prepare.cc:
  Fixed bug #12762:
  allowed set functions aggregated in outer subqueries, allowed nested set functions.
  Introduced a bitmap of nesting levels showingin what subqueries a set function can be aggregated.
sql/sql_select.cc:
  Fixed bug #12762:
  allowed set functions aggregated in outer subqueries, allowed nested set functions.
  Introduced next levels for subqueries and a bitmap of nesting levels showing
  in what subqueries a set function can be aggregated.
sql/sql_update.cc:
  Fixed bug #12762:
  allowed set functions aggregated in outer subqueries, allowed nested set functions.
  Introduced a bitmap of nesting levels showing in what subqueries a set function can be aggregated.
sql/sql_yacc.yy:
  Fixed bug #12762:
  allowed set functions aggregated in outer subqueries, allowed nested set functions.
  Introduced next levels for subqueries.

sql/sql_delete.cc

@@ -313,7 +313,7 @@ bool mysql_prepare_delete(THD *thd, TABLE_LIST *table_list, Item **conds)
   SELECT_LEX *select_lex= &thd->lex->select_lex;
   DBUG_ENTER("mysql_prepare_delete");
 
-  thd->allow_sum_func= 0;
+  thd->lex->allow_sum_func= 0;
   if (setup_tables(thd, &thd->lex->select_lex.context,
                    &thd->lex->select_lex.top_join_list,
                    table_list, conds, &select_lex->leaf_tables,