diff options
Diffstat (limited to 'sql/item_subselect.cc')
| -rw-r--r-- | sql/item_subselect.cc | 17 |
1 files changed, 12 insertions, 5 deletions
diff --git a/sql/item_subselect.cc b/sql/item_subselect.cc index 554052640da..40f1e753d60 100644 --- a/sql/item_subselect.cc +++ b/sql/item_subselect.cc @@ -1,4 +1,5 @@ -/* Copyright (c) 2002, 2010, Oracle and/or its affiliates. +/* Copyright (c) 2002, 2011, Oracle and/or its affiliates. + Copyright (c) 2010, 2011, Monty Program Ab This program is free software; you can redistribute it and/or modify it under the terms of the GNU General Public License as published by @@ -11,7 +12,7 @@ You should have received a copy of the GNU General Public License along with this program; if not, write to the Free Software - Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA */ + Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA */ /** @file @@ -38,6 +39,7 @@ #include "set_var.h" #include "sql_select.h" #include "sql_parse.h" // check_stack_overrun +#include "sql_test.h" double get_post_group_estimate(JOIN* join, double join_op_rows); @@ -2617,7 +2619,8 @@ subselect_single_select_engine(THD *thd_arg, st_select_lex *select, select_result_interceptor *result_arg, Item_subselect *item_arg) :subselect_engine(thd_arg, item_arg, result_arg), - prepared(0), executed(0), select_lex(select), join(0) + prepared(0), executed(0), optimize_error(0), + select_lex(select), join(0) { select_lex->master_unit()->item= item_arg; } @@ -2630,7 +2633,7 @@ int subselect_single_select_engine::get_identifier() void subselect_single_select_engine::cleanup() { DBUG_ENTER("subselect_single_select_engine::cleanup"); - prepared= executed= 0; + prepared= executed= optimize_error= 0; join= 0; result->cleanup(); select_lex->uncacheable&= ~UNCACHEABLE_DEPENDENT_INJECTED; @@ -2861,6 +2864,10 @@ int join_read_next_same_or_null(READ_RECORD *info); int subselect_single_select_engine::exec() { DBUG_ENTER("subselect_single_select_engine::exec"); + + if (optimize_error) + DBUG_RETURN(1); + char const *save_where= thd->where; SELECT_LEX *save_select= thd->lex->current_select; thd->lex->current_select= select_lex; @@ -2872,7 +2879,7 @@ int subselect_single_select_engine::exec() if (join->optimize()) { thd->where= save_where; - executed= 1; + optimize_error= 1; thd->lex->current_select= save_select; DBUG_RETURN(join->error ? join->error : 1); } |