# # Check for problems with delete # --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; # # IGNORE option # 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; 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; --error ER_UNKNOWN_TABLE DELETE FROM alias USING db1.t1, db2.t1 alias WHERE db1.t1.a = alias.a; 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;
