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MDEV-19186: Assertion `field->table == table' failed in create_tmp_table

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Temporary table is defined with the view field in HAVING.
Item_direct_view_ref for this field is dropped and that causes error.

To fix it Item_direct_view_ref::remove_item_direct_ref() is added.
This commit is contained in:
Galina Shalygina
2019-04-06 00:04:52 +03:00
parent 694d1a50bd
commit a2e477ffd0
3 changed files with 39 additions and 0 deletions
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16
mysql-test/main/having_cond_pushdown.result
View File

@@ -4641,3 +4641,19 @@ pk
3 3
DROP TABLE t1; DROP TABLE t1;
DROP VIEW v1; DROP VIEW v1;
#
# MDEV-19186: temporary table defined with view field in HAVING
#
CREATE TABLE t1 (pk INT, x VARCHAR(10));
INSERT INTO t1 VALUES (1,'y'),(2,'s'),(3,'aaa');
CREATE VIEW v1 AS SELECT * FROM t1;
CREATE TABLE t2 (pk INT, x VARCHAR(10));
INSERT INTO t2 VALUES (1,'aa'),(2,'t'),(3,'bb');
CREATE TABLE tmp1
SELECT v1.pk
FROM t2,v1
WHERE v1.x = t2.x
GROUP BY v1.pk
HAVING (v1.pk = 1);
DROP TABLE t1,t2,tmp1;
DROP VIEW v1;

22
mysql-test/main/having_cond_pushdown.test
View File

@@ -1318,3 +1318,25 @@ HAVING (1 NOT IN (SELECT COUNT(t1.c1) FROM (v1, t1)));
DROP TABLE t1; DROP TABLE t1;
DROP VIEW v1; DROP VIEW v1;
--echo #
--echo # MDEV-19186: temporary table defined with view field in HAVING
--echo #
CREATE TABLE t1 (pk INT, x VARCHAR(10));
INSERT INTO t1 VALUES (1,'y'),(2,'s'),(3,'aaa');
CREATE VIEW v1 AS SELECT * FROM t1;
CREATE TABLE t2 (pk INT, x VARCHAR(10));
INSERT INTO t2 VALUES (1,'aa'),(2,'t'),(3,'bb');
CREATE TABLE tmp1
SELECT v1.pk
FROM t2,v1
WHERE v1.x = t2.x
GROUP BY v1.pk
HAVING (v1.pk = 1);
DROP TABLE t1,t2,tmp1;
DROP VIEW v1;

1
sql/item.h
View File

@@ -5733,6 +5733,7 @@ public:
{ return get_item_copy<Item_direct_view_ref>(thd, this); } { return get_item_copy<Item_direct_view_ref>(thd, this); }
Item *field_transformer_for_having_pushdown(THD *thd, uchar *arg) Item *field_transformer_for_having_pushdown(THD *thd, uchar *arg)
{ return this; } { return this; }
Item *remove_item_direct_ref() { return this; }
}; };