EVOLUTION-MANAGER

Edit File: vcol_view_myisam.result

SET @@session.storage_engine = 'MyISAM'; create table t1 (a int not null, b int as (-a), c int as (-a) persistent); insert into t1 (a) values (1), (1), (2), (2), (3); create view v1 (d,e) as select abs(b), abs(c) from t1; select d,e from v1; d e 1 1 1 1 2 2 2 2 3 3 select is_updatable from information_schema.views where table_name='v1'; is_updatable NO explain extended select d,e from v1; id select_type table type possible_keys key key_len ref rows filtered Extra 1 SIMPLE t1 ALL NULL NULL NULL NULL 5 100.00 Warnings: Note 1003 select abs(`test`.`t1`.`b`) AS `d`,abs(`test`.`t1`.`c`) AS `e` from `test`.`t1` create algorithm=temptable view v2 (d,e) as select abs(b), abs(c) from t1; show create view v2; View Create View character_set_client collation_connection v2 CREATE ALGORITHM=TEMPTABLE DEFINER=`root`@`localhost` SQL SECURITY DEFINER VIEW `v2` AS select abs(`t1`.`b`) AS `d`,abs(`t1`.`c`) AS `e` from `t1` latin1 latin1_swedish_ci select d,e from v2; d e 1 1 1 1 2 2 2 2 3 3 explain extended select d,e from v2; id select_type table type possible_keys key key_len ref rows filtered Extra 1 PRIMARY <derived2> ALL NULL NULL NULL NULL 5 100.00 2 DERIVED t1 ALL NULL NULL NULL NULL 5 100.00 Warnings: Note 1003 /* select#1 */ select `v2`.`d` AS `d`,`v2`.`e` AS `e` from `test`.`v2` create view v3 (d,e) as select d*2, e*2 from v1; select * from v3; d e 2 2 2 2 4 4 4 4 6 6 explain extended select * from v3; id select_type table type possible_keys key key_len ref rows filtered Extra 1 SIMPLE t1 ALL NULL NULL NULL NULL 5 100.00 Warnings: Note 1003 select abs(`test`.`t1`.`b`) * 2 AS `d`,abs(`test`.`t1`.`c`) * 2 AS `e` from `test`.`t1` drop view v1,v2,v3; drop table t1; create table t1 (a int not null, b int as (-a), c int as (-a) persistent); insert into t1 (a) values (1), (2), (3), (1), (2), (3); create view v1 as select distinct b from t1; select * from v1; b -1 -2 -3 explain select * from v1; id select_type table type possible_keys key key_len ref rows Extra 1 PRIMARY <derived2> ALL NULL NULL NULL NULL 6 2 DERIVED t1 ALL NULL NULL NULL NULL 6 Using temporary select * from t1; a b c 1 -1 -1 2 -2 -2 3 -3 -3 1 -1 -1 2 -2 -2 3 -3 -3 drop view v1; create view v1 as select distinct c from t1; select * from v1; c -1 -2 -3 explain select * from v1; id select_type table type possible_keys key key_len ref rows Extra 1 PRIMARY <derived2> ALL NULL NULL NULL NULL 6 2 DERIVED t1 ALL NULL NULL NULL NULL 6 Using temporary select * from t1; a b c 1 -1 -1 2 -2 -2 3 -3 -3 1 -1 -1 2 -2 -2 3 -3 -3 drop view v1; drop table t1; create table t1 (a int not null, b int as (-a), c int as (-a) persistent); insert into t1 (a) values (1), (2), (3), (4); create view v1 as select b+1 from t1 order by 1 desc limit 2; select * from v1; b+1 0 -1 MariaDB-5.3: the following EXPLAIN produces incorrect #rows for table t1. MariaDB-5.3: this is expected to go away when FROM subquery optimizations are pushed explain select * from v1; id select_type table type possible_keys key key_len ref rows Extra 1 PRIMARY <derived2> ALL NULL NULL NULL NULL 2 2 DERIVED t1 ALL NULL NULL NULL NULL 4 Using filesort drop view v1; create view v1 as select c+1 from t1 order by 1 desc limit 2; select * from v1; c+1 0 -1 MariaDB-5.3: the following EXPLAIN produces incorrect #rows for table t1. MariaDB-5.3: this is expected to go away when FROM subquery optimizations are pushed explain select * from v1; id select_type table type possible_keys key key_len ref rows Extra 1 PRIMARY <derived2> ALL NULL NULL NULL NULL 2 2 DERIVED t1 ALL NULL NULL NULL NULL 4 Using filesort drop view v1; drop table t1; create table t1 (a int, b int, c int as (-a), d int as (-a) persistent, primary key(a)); insert into t1 (a,b) values (10,2), (20,3), (30,4), (40,5), (50,10); create view v1 (a,e,f,g) as select a, b+1,c+1,d+1 from t1; update v1 set a=a+e; select * from v1; a e f g 13 3 -12 -12 24 4 -23 -23 35 5 -34 -34 46 6 -45 -45 61 11 -60 -60 select * from t1; a b c d 13 2 -13 -13 24 3 -24 -24 35 4 -35 -35 46 5 -46 -46 61 10 -61 -61 delete from v1; select * from v1; a e f g select * from t1; a b c d insert into v1 (a,e) values (60,15); ERROR HY000: The target table v1 of the INSERT is not insertable-into drop table t1; drop view v1; SET @save_optimizer_switch=@@optimizer_switch; SET optimizer_switch='outer_join_with_cache=off'; create table t1 (a int, b int as (-a), c int as (-a) persistent, primary key(a)); insert into t1 (a) values (1), (2), (3); create view v1 (x,y,z) as select a,b,c from t1 where b < -1; select t1.a, v1.x, v1.y, v1.z from t1 left join v1 on (t1.b= v1.y); a x y z 1 NULL NULL NULL 2 2 -2 -2 3 3 -3 -3 drop view v1; create view v1 (x,y,z) as select a,b,c from t1 where c < -1; select t1.a, v1.x, v1.y, v1.z from t1 left join v1 on (t1.c= v1.z); a x y z 1 NULL NULL NULL 2 2 -2 -2 3 3 -3 -3 drop view v1; drop table t1; SET optimizer_switch=@save_optimizer_switch; create table t1 (a1 int, b1 int as (-a1), c1 int as (-a1) persistent); create table t2 (a2 int, b2 int as (-a2), c2 int as (-a2) persistent); insert into t1 (a1) values (1), (2); insert into t2 (a2) values (2), (3); create view v1 as select * from t1,t2 union all select * from t1,t2; select * from v1; a1 b1 c1 a2 b2 c2 1 -1 -1 2 -2 -2 2 -2 -2 2 -2 -2 1 -1 -1 3 -3 -3 2 -2 -2 3 -3 -3 1 -1 -1 2 -2 -2 2 -2 -2 2 -2 -2 1 -1 -1 3 -3 -3 2 -2 -2 3 -3 -3 drop view v1; drop table t1, t2; create table t1 (a int, b int as (-a), c int as (-a) persistent); create table t2 like t1; create view v1 as select a,b,c from t1; create view v2 as select a,b,c from t2 where b in (select b from v1); show create view v2; View Create View character_set_client collation_connection v2 CREATE ALGORITHM=UNDEFINED DEFINER=`root`@`localhost` SQL SECURITY DEFINER VIEW `v2` AS select `t2`.`a` AS `a`,`t2`.`b` AS `b`,`t2`.`c` AS `c` from `t2` where `t2`.`b` in (select `v1`.`b` from `v1`) latin1 latin1_swedish_ci drop view v2, v1; drop table t1, t2; create table t1 (a int, b int as (-a), c int as (-a) persistent); insert into t1 (a) values (1),(1),(2),(2),(3),(3); create view v1 as select b from t1; select distinct b from v1; b -1 -2 -3 select distinct b from v1 limit 2; b -1 -2 select distinct b from t1 limit 2; b -1 -2 prepare stmt1 from "select distinct b from v1 limit 2"; execute stmt1; b -1 -2 execute stmt1; b -1 -2 deallocate prepare stmt1; drop view v1; create view v1 as select c from t1; select distinct c from v1; c -1 -2 -3 select distinct c from v1 limit 2; c -1 -2 select distinct c from t1 limit 2; c -1 -2 prepare stmt1 from "select distinct c from v1 limit 2"; execute stmt1; c -1 -2 execute stmt1; c -1 -2 deallocate prepare stmt1; drop view v1; drop table t1; create table t1 (a int, b int as (-a), c int as (-a) persistent); create view v1 as select * from t1 where b > -2 && c >-2 with check option; insert into v1 (a) values (1); insert into v1 (a) values (3); ERROR 44000: CHECK OPTION failed `test`.`v1` insert ignore into v1 (a) values (2),(3),(0); Warnings: Warning 1369 CHECK OPTION failed `test`.`v1` Warning 1369 CHECK OPTION failed `test`.`v1` select * from t1; a b c 1 -1 -1 0 0 0 drop view v1; drop table t1;