mirror/mariadb
1
0
Fork 0
mirror of https://github.com/MariaDB/server.git synced 2025-04-02 05:15:33 +02:00
Code Issues Projects Releases Packages Wiki Activity Actions1
mariadb/mysql-test/main/delete.test
Dave Gosselin 5001300bd4 MDEV-30469 Support ORDER BY and LIMIT for multi-table DELETE, index hints for single-table DELETE 
We now allow multitable queries with order by and limit, such as:
  delete t1.*, t2.* from t1, t2 order by t1.id desc limit 3;
To predict what rows will be deleted, run the equivalent select:
  select t1.*, t2.* from t1, t2 order by t1.id desc limit 3;
Additionally, index hints are now supported with single table delete statements:
  delete from t2 use index(xid) order by (id) limit 2;

This approach changes the multi_delete SELECT result interceptor to use a temporary
table to collect row ids pertaining to the rows that will be deleted, rather than
directly deleting rows from the target table(s).  Row ids are collected during
send_data, then read during send_eof to delete target rows.  In the event that the
temporary table created in memory is not big enough for all matching rows, it is
converted to an aria table.

Other changes:
  - Deleting from a sequence now affects zero rows instead of emitting an error

Limitations:
  - The federated connector does not create implicit row ids, so we to use a key
  when conditionally deleting.  See the change in federated_maybe_16324629.test
2025-02-05 10:12:27 -05:00

830 lines
21 KiB
Text
Raw Permalink Blame History

#
# Check for problems with delete
#
call mtr.add_suppression("Sort aborted.*");
--disable_warnings
drop table if exists t1,t2,t3,t11,t12;
--enable_warnings
CREATE TABLE t1 (a tinyint(3), b tinyint(5));
INSERT INTO t1 VALUES (1,1);
INSERT LOW_PRIORITY INTO t1 VALUES (1,2);
INSERT INTO t1 VALUES (1,3);
DELETE from t1 where a=1 limit 1;
DELETE LOW_PRIORITY from t1 where a=1;
INSERT INTO t1 VALUES (1,1);
DELETE from t1;
LOCK TABLE t1 write;
INSERT INTO t1 VALUES (1,2);
DELETE from t1;
UNLOCK TABLES;
INSERT INTO t1 VALUES (1,2);
SET AUTOCOMMIT=0;
DELETE from t1;
SET AUTOCOMMIT=1;
drop table t1;
#
# Test of delete when the delete will cause a node to disappear and reappear
# (This assumes a block size of 1024)
#
create table t1 (
a bigint not null,
b bigint not null default 0,
c bigint not null default 0,
d bigint not null default 0,
e bigint not null default 0,
f bigint not null default 0,
g bigint not null default 0,
h bigint not null default 0,
i bigint not null default 0,
j bigint not null default 0,
primary key (a,b,c,d,e,f,g,h,i,j));
insert into t1 (a) values (2),(4),(6),(8),(10),(12),(14),(16),(18),(20),(22),(24),(26),(23);
delete from t1 where a=26;
drop table t1;
create table t1 (
a bigint not null,
b bigint not null default 0,
c bigint not null default 0,
d bigint not null default 0,
e bigint not null default 0,
f bigint not null default 0,
g bigint not null default 0,
h bigint not null default 0,
i bigint not null default 0,
j bigint not null default 0,
primary key (a,b,c,d,e,f,g,h,i,j));
insert into t1 (a) values (2),(4),(6),(8),(10),(12),(14),(16),(18),(20),(22),(24),(26),(23),(27);
delete from t1 where a=27;
drop table t1;
CREATE TABLE `t1` (
`i` int(10) NOT NULL default '0',
`i2` int(10) NOT NULL default '0',
PRIMARY KEY (`i`)
);
-- error 1054
DELETE FROM t1 USING t1 WHERE post='1';
drop table t1;
#
# CHAR(0) bug - not actually DELETE bug, but anyway...
#
CREATE TABLE t1 (
bool char(0) default NULL,
not_null varchar(20) binary NOT NULL default '',
misc integer not null,
PRIMARY KEY (not_null)
) ENGINE=MyISAM;
INSERT INTO t1 VALUES (NULL,'a',4), (NULL,'b',5), (NULL,'c',6), (NULL,'d',7);
select * from t1 where misc > 5 and bool is null;
delete from t1 where misc > 5 and bool is null;
select * from t1 where misc > 5 and bool is null;
select count(*) from t1;
delete from t1 where 1 > 2;
select count(*) from t1;
delete from t1 where 3 > 2;
select count(*) from t1;
drop table t1;
#
# Bug #5733: Table handler error with self-join multi-table DELETE
#
create table t1 (a int not null auto_increment primary key, b char(32));
insert into t1 (b) values ('apple'), ('apple');
select * from t1;
delete t1 from t1, t1 as t2 where t1.b = t2.b and t1.a > t2.a;
select * from t1;
drop table t1;
--echo #
--echo # IGNORE option
--echo #
create table t11 (a int NOT NULL, b int, primary key (a));
create table t12 (a int NOT NULL, b int, primary key (a));
create table t2 (a int NOT NULL, b int, primary key (a));
insert into t11 values (0, 10),(1, 11),(2, 12);
insert into t12 values (33, 10),(0, 11),(2, 12);
insert into t2 values (1, 21),(2, 12),(3, 23);
select * from t11;
select * from t12;
select * from t2;
-- error 1242
delete t11.*, t12.* from t11,t12 where t11.a = t12.a and t11.b <> (select b from t2 where t11.a < t2.a);
select * from t11;
select * from t12;
explain delete ignore t11.*, t12.* from t11,t12 where t11.a = t12.a and t11.b <> (select b from t2 where t11.a < t2.a);
delete ignore t11.*, t12.* from t11,t12 where t11.a = t12.a and t11.b <> (select b from t2 where t11.a < t2.a);
select * from t11;
select * from t12;
insert into t11 values (2, 12);
-- error 1242
delete from t11 where t11.b <> (select b from t2 where t11.a < t2.a);
select * from t11;
delete ignore from t11 where t11.b <> (select b from t2 where t11.a < t2.a);
select * from t11;
drop table t11, t12, t2;
#
# Bug #4198: deletion and KEYREAD
#
create table t1 (a int, b int, unique key (a), key (b));
insert into t1 values (3, 3), (7, 7);
delete t1 from t1 where a = 3;
check table t1;
select * from t1;
drop table t1;
#
# Bug #8392: delete with ORDER BY containing a direct reference to the table
#
CREATE TABLE t1 ( a int PRIMARY KEY );
DELETE FROM t1 WHERE t1.a > 0 ORDER BY t1.a;
INSERT INTO t1 VALUES (0),(1),(2);
DELETE FROM t1 WHERE t1.a > 0 ORDER BY t1.a LIMIT 1;
SELECT * FROM t1;
DROP TABLE t1;
#
# Bug #21392: multi-table delete with alias table name fails with
# 1003: Incorrect table name
#
create table t1 (a int);
delete `4.t1` from t1 as `4.t1` where `4.t1`.a = 5;
delete FROM `4.t1` USING t1 as `4.t1` where `4.t1`.a = 5;
drop table t1;
#
# Bug#17711: DELETE doesn't use index when ORDER BY, LIMIT and
# non-restricting WHERE is present.
#
create table t1(f1 int primary key);
insert into t1 values (4),(3),(1),(2);
delete from t1 where (@a:= f1) order by f1 limit 1;
select @a;
drop table t1;
# BUG#30385 "Server crash when deleting with order by and limit"
CREATE TABLE t1 (
`date` date ,
`time` time ,
`seq` int(10) unsigned NOT NULL auto_increment,
PRIMARY KEY (`seq`),
KEY `seq` (`seq`),
KEY `time` (`time`),
KEY `date` (`date`)
);
DELETE FROM t1 ORDER BY date ASC, time ASC LIMIT 1;
drop table t1;
--echo End of 4.1 tests
#
# Test of multi-delete where we are not scanning the first table
#
CREATE TABLE t1 (a int not null,b int not null);
CREATE TABLE t2 (a int not null, b int not null, primary key (a,b));
CREATE TABLE t3 (a int not null, b int not null, primary key (a,b));
insert into t1 values (1,1),(2,1),(1,3);
insert into t2 values (1,1),(2,2),(3,3);
insert into t3 values (1,1),(2,1),(1,3);
select * from t1,t2,t3 where t1.a=t2.a AND t2.b=t3.a and t1.b=t3.b;
explain select * from t1,t2,t3 where t1.a=t2.a AND t2.b=t3.a and t1.b=t3.b;
delete t2.*,t3.* from t1,t2,t3 where t1.a=t2.a AND t2.b=t3.a and t1.b=t3.b;
# This should be empty
select * from t3;
drop table t1,t2,t3;
#
# Bug #8143: deleting '0000-00-00' values using IS NULL
#
create table t1(a date not null);
insert into t1 values (0);
select * from t1 where a is null;
delete from t1 where a is null;
select count(*) from t1;
drop table t1;
#
# Bug #26186: delete order by, sometimes accept unknown column
#
CREATE TABLE t1 (a INT); INSERT INTO t1 VALUES (1);
--error ER_BAD_FIELD_ERROR
DELETE FROM t1 ORDER BY x;
# even columns from a table not used in query (and not even existing)
--error ER_BAD_FIELD_ERROR
DELETE FROM t1 ORDER BY t2.x;
# subquery (as long as the subquery from is valid or DUAL)
--error ER_BAD_FIELD_ERROR
DELETE FROM t1 ORDER BY (SELECT x);
DROP TABLE t1;
#
# Bug #30234: Unexpected behavior using DELETE with AS and USING
# '
CREATE TABLE t1 (
a INT
);
CREATE TABLE t2 (
a INT
);
CREATE DATABASE db1;
CREATE TABLE db1.t1 (
a INT
);
INSERT INTO db1.t1 (a) SELECT * FROM t1;
CREATE DATABASE db2;
CREATE TABLE db2.t1 (
a INT
);
INSERT INTO db2.t1 (a) SELECT * FROM t2;
--error ER_PARSE_ERROR
DELETE FROM t1 alias USING t1, t2 alias WHERE t1.a = alias.a;
DELETE FROM alias USING t1, t2 alias WHERE t1.a = alias.a;
DELETE FROM t1, alias USING t1, t2 alias WHERE t1.a = alias.a;
--error ER_UNKNOWN_TABLE
DELETE FROM t1, t2 USING t1, t2 alias WHERE t1.a = alias.a;
--error ER_PARSE_ERROR
DELETE FROM db1.t1 alias USING db1.t1, db2.t1 alias WHERE db1.t1.a = alias.a;
DELETE FROM alias USING db1.t1, db2.t1 alias WHERE db1.t1.a = alias.a;
--error ER_UNKNOWN_TABLE
DELETE FROM db2.alias USING db1.t1, db2.t1 alias WHERE db1.t1.a = alias.a;
DELETE FROM t1 USING t1 WHERE a = 1;
SELECT * FROM t1;
--error ER_PARSE_ERROR
DELETE FROM t1 alias USING t1 alias WHERE a = 2;
SELECT * FROM t1;
DROP TABLE t1, t2;
DROP DATABASE db1;
DROP DATABASE db2;
#
# Bug 31742: delete from ... order by function call that causes an error,
# asserts server
#
CREATE FUNCTION f1() RETURNS INT RETURN 1;
CREATE TABLE t1 (a INT);
INSERT INTO t1 VALUES (0);
--error 1318
DELETE FROM t1 ORDER BY (f1(10)) LIMIT 1;
DROP TABLE t1;
DROP FUNCTION f1;
--echo #
--echo # Bug #49552 : sql_buffer_result cause crash + not found records
--echo # in multitable delete/subquery
--echo #
CREATE TABLE t1(a INT);
INSERT INTO t1 VALUES (1),(2),(3);
SET SESSION SQL_BUFFER_RESULT=1;
DELETE t1 FROM (SELECT SUM(a) a FROM t1) x,t1;
SET SESSION SQL_BUFFER_RESULT=DEFAULT;
SELECT * FROM t1;
DROP TABLE t1;
--echo End of 5.0 tests
#
# Bug#27525: table not found when using multi-table-deletes with aliases over
# several databas
# Bug#21148: MULTI-DELETE fails to resolve a table by alias if it's from a
# different database
#
--disable_warnings
DROP DATABASE IF EXISTS db1;
DROP DATABASE IF EXISTS db2;
DROP DATABASE IF EXISTS db3;
DROP DATABASE IF EXISTS db4;
DROP TABLE IF EXISTS t1, t2;
DROP PROCEDURE IF EXISTS count;
--enable_warnings
USE test;
CREATE DATABASE db1;
CREATE DATABASE db2;
CREATE TABLE db1.t1 (a INT, b INT);
INSERT INTO db1.t1 VALUES (1,1),(2,2),(3,3);
CREATE TABLE db1.t2 AS SELECT * FROM db1.t1;
CREATE TABLE db2.t1 AS SELECT * FROM db1.t2;
CREATE TABLE db2.t2 AS SELECT * FROM db2.t1;
CREATE TABLE t1 AS SELECT * FROM db2.t2;
CREATE TABLE t2 AS SELECT * FROM t1;
delimiter |;
CREATE PROCEDURE count_rows()
BEGIN
SELECT COUNT(*) AS "COUNT(db1.t1)" FROM db1.t1;
SELECT COUNT(*) AS "COUNT(db1.t2)" FROM db1.t2;
SELECT COUNT(*) AS "COUNT(db2.t1)" FROM db2.t1;
SELECT COUNT(*) AS "COUNT(db2.t2)" FROM db2.t2;
SELECT COUNT(*) AS "COUNT(test.t1)" FROM test.t1;
SELECT COUNT(*) AS "COUNT(test.t2)" FROM test.t2;
END|
delimiter ;|
#
# Testing without a selected database
#
CREATE DATABASE db3;
USE db3;
DROP DATABASE db3;
--error ER_NO_DB_ERROR
SELECT * FROM t1;
# Detect missing table references
--error ER_NO_DB_ERROR
DELETE a1,a2 FROM db1.t1, db2.t2;
--error ER_NO_DB_ERROR
DELETE a1,a2 FROM db1.t1, db2.t2;
--error ER_NO_DB_ERROR
DELETE a1,a2 FROM db1.t1 AS a1, db2.t2;
--error ER_NO_DB_ERROR
DELETE a1,a2 FROM db1.t1, db2.t2 AS a2;
--error ER_NO_DB_ERROR
DELETE a1,a2 FROM db3.t1 AS a1, db4.t2 AS a2;
--error ER_NO_DB_ERROR
DELETE a1,a2 FROM db3.t1 AS a1, db4.t2 AS a2;
--error ER_NO_DB_ERROR
DELETE FROM a1,a2 USING db1.t1, db2.t2;
--error ER_NO_DB_ERROR
DELETE FROM a1,a2 USING db1.t1, db2.t2;
--error ER_NO_DB_ERROR
DELETE FROM a1,a2 USING db1.t1 AS a1, db2.t2;
--error ER_NO_DB_ERROR
DELETE FROM a1,a2 USING db1.t1, db2.t2 AS a2;
--error ER_NO_DB_ERROR
DELETE FROM a1,a2 USING db3.t1 AS a1, db4.t2 AS a2;
--error ER_NO_DB_ERROR
DELETE FROM a1,a2 USING db3.t1 AS a1, db4.t2 AS a2;
# Ambiguous table references
--error ER_NO_DB_ERROR
DELETE a1 FROM db1.t1 AS a1, db2.t2 AS a1;
--error ER_NO_DB_ERROR
DELETE a1 FROM db1.a1, db2.t2 AS a1;
--error ER_NO_DB_ERROR
DELETE a1 FROM a1, db1.t1 AS a1;
--error ER_NO_DB_ERROR
DELETE t1 FROM db1.t1, db2.t1 AS a1;
--error ER_NO_DB_ERROR
DELETE t1 FROM db1.t1 AS a1, db2.t1 AS a2;
--error ER_NO_DB_ERROR
DELETE t1 FROM db1.t1, db2.t1;
# Test all again, now with a selected database
USE test;
# Detect missing table references
--error ER_UNKNOWN_TABLE
DELETE a1,a2 FROM db1.t1, db2.t2;
--error ER_UNKNOWN_TABLE
DELETE a1,a2 FROM db1.t1, db2.t2;
--error ER_UNKNOWN_TABLE
DELETE a1,a2 FROM db1.t1 AS a1, db2.t2;
--error ER_UNKNOWN_TABLE
DELETE a1,a2 FROM db1.t1, db2.t2 AS a2;
--error ER_NO_SUCH_TABLE
DELETE a1,a2 FROM db3.t1 AS a1, db4.t2 AS a2;
--error ER_NO_SUCH_TABLE
DELETE a1,a2 FROM db3.t1 AS a1, db4.t2 AS a2;
--error ER_UNKNOWN_TABLE
DELETE FROM a1,a2 USING db1.t1, db2.t2;
--error ER_UNKNOWN_TABLE
DELETE FROM a1,a2 USING db1.t1, db2.t2;
--error ER_UNKNOWN_TABLE
DELETE FROM a1,a2 USING db1.t1 AS a1, db2.t2;
--error ER_UNKNOWN_TABLE
DELETE FROM a1,a2 USING db1.t1, db2.t2 AS a2;
--error ER_NO_SUCH_TABLE
DELETE FROM a1,a2 USING db3.t1 AS a1, db4.t2 AS a2;
--error ER_NO_SUCH_TABLE
DELETE FROM a1,a2 USING db3.t1 AS a1, db4.t2 AS a2;
# Ambiguous table references
--error ER_NONUNIQ_TABLE
DELETE a1 FROM db1.t1 AS a1, db2.t2 AS a1;
--error ER_NO_SUCH_TABLE
DELETE a1 FROM db1.a1, db2.t2 AS a1;
--error ER_NONUNIQ_TABLE
DELETE a1 FROM a1, db1.t1 AS a1;
--error ER_UNKNOWN_TABLE
DELETE t1 FROM db1.t1, db2.t1 AS a1;
--error ER_UNKNOWN_TABLE
DELETE t1 FROM db1.t1 AS a1, db2.t1 AS a2;
--error ER_UNKNOWN_TABLE
DELETE t1 FROM db1.t1, db2.t1;
# Test multiple-table cross database deletes
--disable_ps2_protocol
DELETE t1 FROM db1.t2 AS t1, db2.t2 AS t2 WHERE t2.a = 1 AND t1.a = t2.a;
SELECT ROW_COUNT();
CALL count_rows();
DELETE a1, a2 FROM db2.t1 AS a1, t2 AS a2 WHERE a1.a = 2 AND a2.a = 2;
SELECT ROW_COUNT();
CALL count_rows();
DROP DATABASE db1;
DROP DATABASE db2;
DROP PROCEDURE count_rows;
DROP TABLE t1, t2;
--enable_ps2_protocol
--echo #
--echo # Bug#46958: Assertion in Diagnostics_area::set_ok_status, trigger,
--echo # merge table
--echo #
CREATE TABLE t1 ( a INT );
CREATE TABLE t2 ( a INT );
CREATE TABLE t3 ( a INT );
INSERT INTO t1 VALUES (1), (2);
INSERT INTO t2 VALUES (1), (2);
INSERT INTO t3 VALUES (1), (2);
CREATE TRIGGER tr1 BEFORE DELETE ON t2
FOR EACH ROW INSERT INTO no_such_table VALUES (1);
--error ER_NO_SUCH_TABLE
DELETE t1, t2, t3 FROM t1, t2, t3;
SELECT * FROM t1;
SELECT * FROM t2;
SELECT * FROM t3;
DROP TABLE t1, t2, t3;
CREATE TABLE t1 ( a INT );
CREATE TABLE t2 ( a INT );
CREATE TABLE t3 ( a INT );
INSERT INTO t1 VALUES (1), (2);
INSERT INTO t2 VALUES (1), (2);
INSERT INTO t3 VALUES (1), (2);
CREATE TRIGGER tr1 AFTER DELETE ON t2
FOR EACH ROW INSERT INTO no_such_table VALUES (1);
--error ER_NO_SUCH_TABLE
DELETE t1, t2, t3 FROM t1, t2, t3;
SELECT * FROM t1;
SELECT * FROM t2;
SELECT * FROM t3;
DROP TABLE t1, t2, t3;
--echo #
--echo # Bug #46425 crash in Diagnostics_area::set_ok_status,
--echo # empty statement, DELETE IGNORE
--echo #
CREATE table t1 (i INTEGER);
INSERT INTO t1 VALUES (1);
--delimiter |
CREATE TRIGGER tr1 AFTER DELETE ON t1 FOR EACH ROW
BEGIN
INSERT INTO t1 SELECT * FROM t1 AS A;
END |
--delimiter ;
--error ER_CANT_UPDATE_USED_TABLE_IN_SF_OR_TRG
DELETE IGNORE FROM t1;
DROP TABLE t1;
--echo #
--echo # Bug #53450: Crash/assertion
--echo # "virtual int ha_myisam::index_first(uchar*)") at assert.c:81
--echo #
CREATE TABLE t1 (a INT, b INT, c INT,
INDEX(a), INDEX(b), INDEX(c));
INSERT INTO t1 VALUES (1,2,3), (4,5,6), (7,8,9);
DELETE FROM t1 WHERE a = 10 OR b = 20 ORDER BY c LIMIT 1;
DROP TABLE t1;
--echo #
--echo # Bug #53034: Multiple-table DELETE statements not accepting
--echo # "Access compatibility" syntax
--echo #
CREATE TABLE t1 (id INT);
CREATE TABLE t2 LIKE t1;
CREATE TABLE t3 LIKE t1;
DELETE FROM t1.*, test.t2.*, a.* USING t1, t2, t3 AS a;
DROP TABLE t1, t2, t3;
--echo End of 5.1 tests
--echo #
--echo # Bug#51099 Assertion in mysql_multi_delete_prepare()
--echo #
--disable_warnings
DROP TABLE IF EXISTS t1, t2;
DROP VIEW IF EXISTS v1, v2;
--enable_warnings
CREATE TABLE t1(a INT);
CREATE TABLE t2(b INT);
CREATE VIEW v1 AS SELECT a, b FROM t1, t2;
CREATE VIEW v2 AS SELECT a FROM v1;
# This is a normal delete
--error ER_VIEW_DELETE_MERGE_VIEW
DELETE FROM v2;
# This is a multi table delete, check that we get the same error
# This caused the assertion.
--error ER_VIEW_DELETE_MERGE_VIEW
DELETE v2 FROM v2;
DROP VIEW v2, v1;
DROP TABLE t1, t2;
--echo End of 5.5 tests
--echo #
--echo # MDEV-30586: DELETE with WHERE containing nested subquery
--echo # with set function aggregated in outer subquery
--echo #
create table t1 (a int);
insert into t1 values (3), (7), (1);
create table t2 (b int);
insert into t2 values (2), (1), (4), (7);
create table t3 (a int, b int);
insert into t3 values (2,10), (7,30), (2,30), (1,10), (7,40);
let $c=
t1.a in (select t3.a from t3 group by t3.a
having t3.a > any (select t2.b from t2
where t2.b*10 < sum(t3.b)));
eval
select * from t1
where $c;
eval
delete from t1
where $c;
eval
select * from t1
where $c;
eval
update t1 set t1.a=t1.a+10
where $c;
drop table t1,t2,t3;
--echo End of 10.4 tests
--echo #
--echo # MDEV-26459: Assertion `block_size <= 0xFFFFFFFFL' failed
--echo # in calculate_block_sizes for 10.7 only
--echo #
SET @sort_buffer_size_save= @@sort_buffer_size;
--disable_warnings
SET sort_buffer_size=1125899906842624;
--enable_warnings
CREATE TABLE t1 (a INT,b CHAR,KEY(a,b));
DELETE a1 FROM t1 AS a1,t1 AS a2 WHERE a1.a=a2.a;
DROP TABLE t1;
SET sort_buffer_size= @sort_buffer_size_save;
--echo # End of 10.11 tests
--echo #
--echo # MDEV-29428: DELETE with ORDER BY without LIMIT clause
--echo #
create table t1 (c1 integer, c2 integer, c3 integer);
insert into t1 values
(1,1,1), (1,2,2), (1,3,3), (2,1,4), (2,2,5), (2,3,6), (2,4,7), (2,5,8);
create temporary table t select * from t1;
let $q1=
delete from t1 order by c2;
eval explain $q1;
eval $q1;
select *from t1;
delete from t1;
insert into t1 select * from t;
let $q2=
delete from t1
where exists (select 'X' from t1 a where a.c2 = t1.c2) and c2 >= 3;
eval explain $q2;
eval $q2;
select *from t1;
delete from t1;
insert into t1 select * from t;
let $q3=
delete from t1
where exists (select 'X' from t1 a where a.c2 = t1.c2) and c2 >= 3
order by c2;
eval explain $q3;
eval $q3;
select *from t1;
drop table t1;
--echo End of 11.1 tests
--echo #
--echo # MDEV-33988 DELETE to support table aliases
--echo #
# Test from MySQL Bug#27455809; DELETE FROM ...WHERE NOT EXISTS WITH TABLE ALIAS CREATES AN ERROR 1064 (42000
CREATE TABLE t1 (c1 INT);
INSERT INTO t1 VALUES (1), (2);
SELECT * FROM t1;
DELETE FROM t1 AS a1 WHERE a1.c1 = 2;
SELECT * FROM t1;
CREATE TABLE t2 (c2 INT);
INSERT INTO t2 VALUES (1), (2);
SELECT * FROM t2;
DELETE FROM t2 a2 WHERE NOT EXISTS (SELECT * FROM t1 WHERE t1.c1 = a2.c2);
SELECT * FROM t2;
DROP TABLE t1, t2;
--echo End of 11.6 tests
--echo #
--echo # MDEV-25008: Delete query gets stuck on mariadb, same query works
--echo # on MySQL 8.0.21
--echo #
--source include/have_sequence.inc
--source include/have_innodb.inc
# original case
CREATE TABLE t1 (
id int NOT NULL PRIMARY KEY,
item_id varchar(100),
seller_name varchar(400),
variant varchar(400),
FULLTEXT KEY t1_serial_IDX (item_id,seller_name,variant)
)engine=innodb;
insert into t1 select seq,seq,seq,seq from seq_1_to_10000;
# Masking the `rows` column as the value might vary a bit
--replace_column 9 #
explain
DELETE FROM t1 WHERE id NOT IN
(SELECT m FROM (SELECT max(id) m FROM t1 GROUP BY item_id, seller_name, variant) AS innertable);
drop table t1;
# example of not full table
create table t1 (a int primary key, b int, c int, key(b));
insert into t1 select seq, seq, seq from seq_1_to_20000;
create table t2 as select * from t1;
explain delete from t1 where b <= 2 and a not in (select b from t2);
explain delete from t1 where b <= 3 and a not in (select b from t2);
drop table t1, t2;
--echo # End of 11.7 tests
--echo #
--echo # MDEV-30469: Add support of ORDER BY and LIMIT to multidelete query.
--echo #
--echo # Check that limits work with hints
create table t2 (id int, index xid(id));
insert into t2 values (1),(10),(2),(9),(3),(8);
DELETE t2.* FROM t2 use index(xid) ORDER BY (id) LIMIT 2;
select * from t2 ORDER BY (id);
DELETE t2.* FROM t2 use index(xid) ORDER BY (id) DESC LIMIT 3;
select * from t2;
--echo # Check some useles syntax
DELETE t2.* FROM t2 FORCE INDEX FOR GROUP BY (xid) ORDER BY (id) LIMIT 1;
drop table t2;
--echo # Check that hints work with limit
create table t2 (id int primary key, index xid(id));
insert into t2 values (1),(10),(2),(9),(3),(8);
--echo # default primary index
explain
DELETE t2.* FROM t2 ORDER BY (id) LIMIT 2;
--echo # make it use other undex
explain
DELETE t2.* FROM t2 use index(xid) ORDER BY (id) LIMIT 2;
explain
DELETE t2.* FROM t2 force index(xid) ORDER BY (id) LIMIT 2;
--echo # prohibit primary index
explain
DELETE t2.* FROM t2 ignore index(primary) ORDER BY (id) LIMIT 2;
drop table t2;
--echo # Check that limits work with hints & PS protocol
create table t2 (id int, index xid(id));
insert into t2 values (1),(10),(2),(9),(3),(8);
prepare stmt from
"DELETE t2.* FROM t2 use index(xid) ORDER BY (id) LIMIT ?";
set @lim= 2;
execute stmt using @lim;
select * from t2 ORDER BY (id);
set @lim= 1;
execute stmt using @lim;
select * from t2 ORDER BY (id);
set @lim= 3;
execute stmt using @lim;
select * from t2 ORDER BY (id);
drop table t2;
--echo # Check that hints work with limit in normal DELETE syntax
create table t2 (id int primary key, index xid(id));
insert into t2 values (1),(10),(2),(9),(3),(8);
--echo # default primary index
explain
DELETE FROM t2 ORDER BY (id) LIMIT 2;
--echo # make it use other undex
explain
DELETE FROM t2 use index(xid) ORDER BY (id) LIMIT 2;
explain
DELETE FROM t2 force index(xid) ORDER BY (id) LIMIT 2;
--echo # prohibit primary index
explain
DELETE FROM t2 ignore index(primary) ORDER BY (id) LIMIT 2;
--echo # should issue warnings becaouse we can not switch it internally
--echo # to multiupdate due to RETURNING
DELETE FROM t2 ignore index(primary) ORDER BY (id) LIMIT 2 RETURNING id;
drop table t2;
--echo #
--echo # End of 11.4 test
--echo #
Reference in a new issue View git blame Copy permalink