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When handling DELETE ... FROM if there is no condition it is internally transformed to TRUNCATE for more efficient execution by the storage handler. The check for validity of the optional ORDER BY clause is done after the check for the above optimization and will not be performed if the optimization can be applied. Moved the validity check for ORDER BY before the optimization so it performed regardless of the optimization. mysql-test/r/delete.result: Bug #26186: test case mysql-test/t/delete.test: Bug #26186: test case sql/sql_delete.cc: Bug #26186: do validity check of the ORDER BY before deciding to skip it.
223 lines
6 KiB
Text
223 lines
6 KiB
Text
#
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# Check for problems with delete
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#
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--disable_warnings
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drop table if exists t1,t2,t3,t11,t12;
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--enable_warnings
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CREATE TABLE t1 (a tinyint(3), b tinyint(5));
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INSERT INTO t1 VALUES (1,1);
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INSERT LOW_PRIORITY INTO t1 VALUES (1,2);
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INSERT INTO t1 VALUES (1,3);
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DELETE from t1 where a=1 limit 1;
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DELETE LOW_PRIORITY from t1 where a=1;
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INSERT INTO t1 VALUES (1,1);
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DELETE from t1;
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LOCK TABLE t1 write;
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INSERT INTO t1 VALUES (1,2);
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DELETE from t1;
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UNLOCK TABLES;
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INSERT INTO t1 VALUES (1,2);
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SET AUTOCOMMIT=0;
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DELETE from t1;
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SET AUTOCOMMIT=1;
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drop table t1;
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#
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# Test of delete when the delete will cause a node to disappear and reappear
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# (This assumes a block size of 1024)
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#
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create table t1 (
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a bigint not null,
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b bigint not null default 0,
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c bigint not null default 0,
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d bigint not null default 0,
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e bigint not null default 0,
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f bigint not null default 0,
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g bigint not null default 0,
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h bigint not null default 0,
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i bigint not null default 0,
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j bigint not null default 0,
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primary key (a,b,c,d,e,f,g,h,i,j));
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insert into t1 (a) values (2),(4),(6),(8),(10),(12),(14),(16),(18),(20),(22),(24),(26),(23);
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delete from t1 where a=26;
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drop table t1;
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create table t1 (
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a bigint not null,
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b bigint not null default 0,
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c bigint not null default 0,
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d bigint not null default 0,
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e bigint not null default 0,
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f bigint not null default 0,
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g bigint not null default 0,
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h bigint not null default 0,
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i bigint not null default 0,
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j bigint not null default 0,
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primary key (a,b,c,d,e,f,g,h,i,j));
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insert into t1 (a) values (2),(4),(6),(8),(10),(12),(14),(16),(18),(20),(22),(24),(26),(23),(27);
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delete from t1 where a=27;
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drop table t1;
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CREATE TABLE `t1` (
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`i` int(10) NOT NULL default '0',
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`i2` int(10) NOT NULL default '0',
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PRIMARY KEY (`i`)
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);
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-- error 1054
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DELETE FROM t1 USING t1 WHERE post='1';
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drop table t1;
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#
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# CHAR(0) bug - not actually DELETE bug, but anyway...
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#
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CREATE TABLE t1 (
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bool char(0) default NULL,
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not_null varchar(20) binary NOT NULL default '',
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misc integer not null,
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PRIMARY KEY (not_null)
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) ENGINE=MyISAM;
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INSERT INTO t1 VALUES (NULL,'a',4), (NULL,'b',5), (NULL,'c',6), (NULL,'d',7);
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select * from t1 where misc > 5 and bool is null;
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delete from t1 where misc > 5 and bool is null;
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select * from t1 where misc > 5 and bool is null;
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select count(*) from t1;
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delete from t1 where 1 > 2;
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select count(*) from t1;
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delete from t1 where 3 > 2;
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select count(*) from t1;
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drop table t1;
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#
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# Bug #5733: Table handler error with self-join multi-table DELETE
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#
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create table t1 (a int not null auto_increment primary key, b char(32));
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insert into t1 (b) values ('apple'), ('apple');
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select * from t1;
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delete t1 from t1, t1 as t2 where t1.b = t2.b and t1.a > t2.a;
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select * from t1;
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drop table t1;
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#
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# IGNORE option
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#
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create table t11 (a int NOT NULL, b int, primary key (a));
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create table t12 (a int NOT NULL, b int, primary key (a));
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create table t2 (a int NOT NULL, b int, primary key (a));
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insert into t11 values (0, 10),(1, 11),(2, 12);
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insert into t12 values (33, 10),(0, 11),(2, 12);
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insert into t2 values (1, 21),(2, 12),(3, 23);
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select * from t11;
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select * from t12;
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select * from t2;
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-- error 1242
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delete t11.*, t12.* from t11,t12 where t11.a = t12.a and t11.b <> (select b from t2 where t11.a < t2.a);
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select * from t11;
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select * from t12;
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delete ignore t11.*, t12.* from t11,t12 where t11.a = t12.a and t11.b <> (select b from t2 where t11.a < t2.a);
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select * from t11;
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select * from t12;
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insert into t11 values (2, 12);
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-- error 1242
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delete from t11 where t11.b <> (select b from t2 where t11.a < t2.a);
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select * from t11;
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delete ignore from t11 where t11.b <> (select b from t2 where t11.a < t2.a);
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select * from t11;
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drop table t11, t12, t2;
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#
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# Bug #4198: deletion and KEYREAD
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#
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create table t1 (a int, b int, unique key (a), key (b));
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insert into t1 values (3, 3), (7, 7);
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delete t1 from t1 where a = 3;
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check table t1;
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select * from t1;
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drop table t1;
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#
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# Bug #8392: delete with ORDER BY containing a direct reference to the table
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#
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CREATE TABLE t1 ( a int PRIMARY KEY );
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DELETE FROM t1 WHERE t1.a > 0 ORDER BY t1.a;
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INSERT INTO t1 VALUES (0),(1),(2);
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DELETE FROM t1 WHERE t1.a > 0 ORDER BY t1.a LIMIT 1;
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SELECT * FROM t1;
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DROP TABLE t1;
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#
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# Bug #21392: multi-table delete with alias table name fails with
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# 1003: Incorrect table name
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#
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create table t1 (a int);
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delete `4.t1` from t1 as `4.t1` where `4.t1`.a = 5;
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delete FROM `4.t1` USING t1 as `4.t1` where `4.t1`.a = 5;
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drop table t1;
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#
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# Bug#17711: DELETE doesn't use index when ORDER BY, LIMIT and
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# non-restricting WHERE is present.
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#
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create table t1(f1 int primary key);
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insert into t1 values (4),(3),(1),(2);
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delete from t1 where (@a:= f1) order by f1 limit 1;
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select @a;
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drop table t1;
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--echo End of 4.1 tests
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# End of 4.1 tests
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#
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# Test of multi-delete where we are not scanning the first table
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#
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CREATE TABLE t1 (a int not null,b int not null);
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CREATE TABLE t2 (a int not null, b int not null, primary key (a,b));
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CREATE TABLE t3 (a int not null, b int not null, primary key (a,b));
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insert into t1 values (1,1),(2,1),(1,3);
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insert into t2 values (1,1),(2,2),(3,3);
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insert into t3 values (1,1),(2,1),(1,3);
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select * from t1,t2,t3 where t1.a=t2.a AND t2.b=t3.a and t1.b=t3.b;
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explain select * from t1,t2,t3 where t1.a=t2.a AND t2.b=t3.a and t1.b=t3.b;
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delete t2.*,t3.* from t1,t2,t3 where t1.a=t2.a AND t2.b=t3.a and t1.b=t3.b;
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# This should be empty
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select * from t3;
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drop table t1,t2,t3;
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#
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# Bug #8143: deleting '0000-00-00' values using IS NULL
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#
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create table t1(a date not null);
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insert into t1 values (0);
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select * from t1 where a is null;
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delete from t1 where a is null;
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select count(*) from t1;
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drop table t1;
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#
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# Bug #26186: delete order by, sometimes accept unknown column
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#
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CREATE TABLE t1 (a INT); INSERT INTO t1 VALUES (1);
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--error ER_BAD_FIELD_ERROR
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DELETE FROM t1 ORDER BY x;
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# even columns from a table not used in query (and not even existing)
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--error ER_BAD_FIELD_ERROR
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DELETE FROM t1 ORDER BY t2.x;
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# subquery (as long as the subquery from is valid or DUAL)
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--error ER_BAD_FIELD_ERROR
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DELETE FROM t1 ORDER BY (SELECT x);
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DROP TABLE t1;
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