diff options
Diffstat (limited to 'sql/sql_derived.cc')
| -rw-r--r-- | sql/sql_derived.cc | 43 |
1 files changed, 16 insertions, 27 deletions
diff --git a/sql/sql_derived.cc b/sql/sql_derived.cc index 7b9191cd841..74b239e1637 100644 --- a/sql/sql_derived.cc +++ b/sql/sql_derived.cc @@ -27,7 +27,7 @@ /* - call given derived table processor (preparing or filling tables) + Call given derived table processor (preparing or filling tables) SYNOPSIS mysql_handle_derived() @@ -36,7 +36,6 @@ RETURN 0 ok - -1 Error 1 Error and error message given */ @@ -97,14 +96,14 @@ out: RETURN 0 ok - 1 Error - -1 Error and error message given - */ + 1 Error and an error message was given +*/ int mysql_derived_prepare(THD *thd, LEX *lex, TABLE_LIST *orig_table_list) { SELECT_LEX_UNIT *unit= orig_table_list->derived; int res= 0; + ulonglong create_options; DBUG_ENTER("mysql_derived_prepare"); if (unit) { @@ -118,21 +117,18 @@ int mysql_derived_prepare(THD *thd, LEX *lex, TABLE_LIST *orig_table_list) for (SELECT_LEX *sl= first_select; sl; sl= sl->next_select()) sl->context.outer_context= 0; - if (!(derived_result= new select_union(0))) + if (!(derived_result= new select_union)) DBUG_RETURN(1); // out of memory // st_select_lex_unit::prepare correctly work for single select - if ((res= unit->prepare(thd, derived_result, 0, orig_table_list->alias))) + if ((res= unit->prepare(thd, derived_result, 0))) goto exit; - if (check_duplicate_names(unit->types, 0)) - { - res= -1; + if ((res= check_duplicate_names(unit->types, 0))) goto exit; - } - derived_result->tmp_table_param.init(); - derived_result->tmp_table_param.field_count= unit->types.elements; + create_options= (first_select->options | thd->options | + TMP_TABLE_ALL_COLUMNS); /* Temp table is created so that it hounours if UNION without ALL is to be processed @@ -143,18 +139,12 @@ int mysql_derived_prepare(THD *thd, LEX *lex, TABLE_LIST *orig_table_list) !unit->union_distinct->next_select() (i.e. it is union and last distinct SELECT is last SELECT of UNION). */ - if (!(table= create_tmp_table(thd, &derived_result->tmp_table_param, - unit->types, (ORDER*) 0, - FALSE, 1, - (first_select->options | thd->options | - TMP_TABLE_ALL_COLUMNS), - HA_POS_ERROR, - orig_table_list->alias))) - { - res= -1; + if ((res= derived_result->create_result_table(thd, &unit->types, FALSE, + create_options, + orig_table_list->alias))) goto exit; - } - derived_result->set_table(table); + + table= derived_result->table; exit: /* Hide "Unknown column" or "Unknown function" error */ @@ -231,9 +221,8 @@ exit: RETURN 0 ok - 1 Error - -1 Error and error message given - */ + 1 Error and an error message was given +*/ int mysql_derived_filling(THD *thd, LEX *lex, TABLE_LIST *orig_table_list) { |