mariadb/mysql-test/suite/innodb/t/innodb_multi_update.test
Sergei Golubchik a587ded283 MDEV-24346 valgrind error in main.precedence
in queries like

  create view v1 as select 2 like 1 escape (3 in (select 0 union select 1));
  select 2 union select * from v1;

Item_func_like::escape was left uninitialized, because
Item_in_optimizer is const_during_execution()
but not actually const_item() during execution.

It's not, because const subquery evaluation was disabled for derived.
Practically it only needs to be disabled for multi-update
that runs fix_fields() before all tables are locked.
2020-12-19 11:44:42 +01:00

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--source include/have_innodb.inc
#
# Test multi update with different join methods
#
CREATE TABLE bug38999_1 (a int not null primary key, b int not null, key (b)) engine=innodb;
CREATE TABLE bug38999_2 (a int not null primary key, b int not null, key (b)) engine=innodb;
INSERT INTO bug38999_1 values (1,1),(2,2),(3,3),(4,4),(5,5),(6,6),(7,7),(8,8),(9,9),(10,10),(11,11),(12,12);
INSERT INTO bug38999_2 values (1,1),(2,2),(3,3),(4,4),(5,5),(6,6),(7,7),(8,8),(9,9);
# Full join, without key
update bug38999_1,bug38999_2 set bug38999_1.a=bug38999_1.a+100;
select * from bug38999_1;
# unique key
update bug38999_1,bug38999_2 set bug38999_1.a=bug38999_1.a+100 where bug38999_1.a=101;
select * from bug38999_1;
# ref key
update bug38999_1,bug38999_2 set bug38999_1.b=bug38999_1.b+10 where bug38999_1.b=2;
select * from bug38999_1;
# Range key (in bug38999_1)
update bug38999_1,bug38999_2 set bug38999_1.b=bug38999_1.b+2,bug38999_2.b=bug38999_1.b+10 where bug38999_1.b between 3 and 5 and bug38999_1.a=bug38999_2.a+100;
select * from bug38999_1;
select * from bug38999_2;
drop table bug38999_1,bug38999_2;
--echo #
--echo # Bug#54475 improper error handling causes cascading crashing failures in innodb
--echo #
CREATE TABLE t1(f1 INT) ENGINE=INNODB;
INSERT INTO t1 VALUES(1);
--error ER_OPERAND_COLUMNS
UPDATE (SELECT ((SELECT 1 FROM t1), 1) FROM t1 WHERE (SELECT 1 FROM t1)) x, (SELECT 1) AS d SET d.f1 = 1;
UPDATE (SELECT ((SELECT 1 FROM t1),1) = (1,1) FROM t1 WHERE (SELECT 1 FROM t1)) x, t1 AS d SET d.f1 = 1;
DROP TABLE t1;