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Fixed bug mdev-5078.

Browse source 
For aggregated fields from views/derived tables the possible adjustment
of thd->lex->in_sum_func->max_arg_level in the function Item_field::fix_fields
must be done before we leave the function.
This commit is contained in:
Igor Babaev 2013-10-04 09:51:07 -07:00
parent 00816a964f
commit ec226e553a
3 changed files with 42 additions and 5 deletions
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18
mysql-test/r/derived_view.result
View file

@ -2205,6 +2205,24 @@ DROP VIEW v1;
DROP TABLE t1,t2;
set optimizer_switch=@save_optimizer_switch;
#
# mdev-5078: sum over a view/derived table
#
CREATE TABLE t1 (a int);
INSERT INTO t1 (a) VALUES (1), (2);
CREATE TABLE t2 (b int(11));
INSERT INTO t2 (b) VALUES (1), (2);
CREATE VIEW v AS SELECT b as c FROM t2;
SELECT a, (SELECT SUM(a + c) FROM v) FROM t1;
a (SELECT SUM(a + c) FROM v)
1 5
2 7
SELECT a, (SELECT SUM(a + c) FROM (SELECT b as c FROM t2) AS v1) FROM t1;
a (SELECT SUM(a + c) FROM (SELECT b as c FROM t2) AS v1)
1 5
2 7
DROP VIEW v;
DROP TABLE t1,t2;
#
# end of 5.3 tests
#
set optimizer_switch=@exit_optimizer_switch;

19
mysql-test/t/derived_view.test
View file

@ -1545,6 +1545,25 @@ DROP TABLE t1,t2;
set optimizer_switch=@save_optimizer_switch;
--echo #
--echo # mdev-5078: sum over a view/derived table
--echo #
CREATE TABLE t1 (a int);
INSERT INTO t1 (a) VALUES (1), (2);
CREATE TABLE t2 (b int(11));
INSERT INTO t2 (b) VALUES (1), (2);
CREATE VIEW v AS SELECT b as c FROM t2;
SELECT a, (SELECT SUM(a + c) FROM v) FROM t1;
SELECT a, (SELECT SUM(a + c) FROM (SELECT b as c FROM t2) AS v1) FROM t1;
DROP VIEW v;
DROP TABLE t1,t2;
--echo #
--echo # end of 5.3 tests
--echo #

10
sql/item.cc
View file

@ -4746,6 +4746,11 @@ bool Item_field::fix_fields(THD *thd, Item **reference)
goto mark_non_agg_field;
}
if (thd->lex->in_sum_func &&
thd->lex->in_sum_func->nest_level ==
thd->lex->current_select->nest_level)
set_if_bigger(thd->lex->in_sum_func->max_arg_level,
thd->lex->current_select->nest_level);
/*
if it is not expression from merged VIEW we will set this field.
@ -4762,11 +4767,6 @@ bool Item_field::fix_fields(THD *thd, Item **reference)
return FALSE;
set_field(from_field);
if (thd->lex->in_sum_func &&
thd->lex->in_sum_func->nest_level ==
thd->lex->current_select->nest_level)
set_if_bigger(thd->lex->in_sum_func->max_arg_level,
thd->lex->current_select->nest_level);
}
else if (thd->mark_used_columns != MARK_COLUMNS_NONE)
{