mariadb/mysql-test/r/view.result

drop table if exists t1,t2,`t1a``b`,v1,v2,v3,v4,v5,v6;
drop view if exists t1,t2,`t1a``b`,v1,v2,v3,v4,v5,v6;
drop database if exists mysqltest;
use test;
create view v1 (c,d) as select a,b from t1;
ERROR 42S02: Table 'test.t1' doesn't exist
create temporary table t1 (a int, b int);
create view v1 (c) as select b+1 from t1;
ERROR HY000: View's SELECT contains a temporary table 't1'
drop table t1;
create table t1 (a int, b int);
insert into t1 values (1,2), (1,3), (2,4), (2,5), (3,10);
create view v1 (c,d) as select a,b+@@global.max_user_connections from t1;
ERROR HY000: View's SELECT contains a variable or parameter
create view v1 (c) as select b+1 from t1;
select c from v1;
c
3
4
5
6
11
create temporary table t1 (a int, b int);
select * from t1;
a	b
select c from v1;
c
3
4
5
6
11
show create table v1;
View	Create View
v1	CREATE ALGORITHM=UNDEFINED VIEW `test`.`v1` AS select (`test`.`t1`.`b` + 1) AS `c` from `test`.`t1`
show create view v1;
View	Create View
v1	CREATE ALGORITHM=UNDEFINED VIEW `test`.`v1` AS select (`test`.`t1`.`b` + 1) AS `c` from `test`.`t1`
show create view t1;
ERROR HY000: 'test.t1' is not VIEW
drop table t1;
select a from v1;
ERROR 42S22: Unknown column 'a' in 'field list'
select v1.a from v1;
ERROR 42S22: Unknown column 'v1.a' in 'field list'
select b from v1;
ERROR 42S22: Unknown column 'b' in 'field list'
select v1.b from v1;
ERROR 42S22: Unknown column 'v1.b' in 'field list'
explain extended select c from v1;
id	select_type	table	type	possible_keys	key	key_len	ref	rows	Extra
1	PRIMARY	t1	ALL	NULL	NULL	NULL	NULL	5	
Warnings:
Note	1003	select (`test`.`t1`.`b` + 1) AS `c` from `test`.`v1`
create algorithm=temptable view v2 (c) as select b+1 from t1;
show create view v2;
View	Create View
v2	CREATE ALGORITHM=TEMPTABLE VIEW `test`.`v2` AS select (`test`.`t1`.`b` + 1) AS `c` from `test`.`t1`
select c from v2;
c
3
4
5
6
11
explain extended select c from v2;
id	select_type	table	type	possible_keys	key	key_len	ref	rows	Extra
1	PRIMARY	<derived2>	ALL	NULL	NULL	NULL	NULL	5	
2	DERIVED	t1	ALL	NULL	NULL	NULL	NULL	5	
Warnings:
Note	1003	select `v2`.`c` AS `c` from `test`.`v2`
create view v3 (c) as select a+1 from v1;
ERROR 42S22: Unknown column 'a' in 'field list'
create view v3 (c) as select b+1 from v1;
ERROR 42S22: Unknown column 'b' in 'field list'
create view v3 (c) as select c+1 from v1;
select c from v3;
c
4
5
6
7
12
explain extended select c from v3;
id	select_type	table	type	possible_keys	key	key_len	ref	rows	Extra
1	PRIMARY	t1	ALL	NULL	NULL	NULL	NULL	5	
Warnings:
Note	1003	select ((`test`.`t1`.`b` + 1) + 1) AS `c` from `test`.`v3`
create algorithm=temptable view v4 (c) as select c+1 from v2;
select c from v4;
c
4
5
6
7
12
explain extended select c from v4;
id	select_type	table	type	possible_keys	key	key_len	ref	rows	Extra
1	PRIMARY	<derived2>	ALL	NULL	NULL	NULL	NULL	5	
2	DERIVED	<derived3>	ALL	NULL	NULL	NULL	NULL	5	
3	DERIVED	t1	ALL	NULL	NULL	NULL	NULL	5	
Warnings:
Note	1003	select `v4`.`c` AS `c` from `test`.`v4`
create view v5 (c) as select c+1 from v2;
select c from v5;
c
4
5
6
7
12
explain extended select c from v5;
id	select_type	table	type	possible_keys	key	key_len	ref	rows	Extra
1	PRIMARY	<derived3>	ALL	NULL	NULL	NULL	NULL	5	
3	DERIVED	t1	ALL	NULL	NULL	NULL	NULL	5	
Warnings:
Note	1003	select (`v2`.`c` + 1) AS `c` from `test`.`v5`
create algorithm=temptable view v6 (c) as select c+1 from v1;
select c from v6;
c
4
5
6
7
12
explain extended select c from v6;
id	select_type	table	type	possible_keys	key	key_len	ref	rows	Extra
1	PRIMARY	<derived2>	ALL	NULL	NULL	NULL	NULL	5	
2	DERIVED	t1	ALL	NULL	NULL	NULL	NULL	5	
Warnings:
Note	1003	select `v6`.`c` AS `c` from `test`.`v6`
show tables;
Tables_in_test
t1
v1
v2
v3
v4
v5
v6
show full tables;
Tables_in_test	Table_type
t1	BASE TABLE
v1	VIEW
v2	VIEW
v3	VIEW
v4	VIEW
v5	VIEW
v6	VIEW
show table status;
Name	Engine	Version	Row_format	Rows	Avg_row_length	Data_length	Max_data_length	Index_length	Data_free	Auto_increment	Create_time	Update_time	Check_time	Collation	Checksum	Create_options	Comment
t1	MyISAM	10	Fixed	5	9	45	38654705663	1024	0	NULL	#	#	NULL	latin1_swedish_ci	NULL		
v1	NULL	NULL	NULL	NULL	NULL	NULL	NULL	NULL	NULL	NULL	#	#	NULL	NULL	NULL	NULL	view
v2	NULL	NULL	NULL	NULL	NULL	NULL	NULL	NULL	NULL	NULL	#	#	NULL	NULL	NULL	NULL	view
v3	NULL	NULL	NULL	NULL	NULL	NULL	NULL	NULL	NULL	NULL	#	#	NULL	NULL	NULL	NULL	view
v4	NULL	NULL	NULL	NULL	NULL	NULL	NULL	NULL	NULL	NULL	#	#	NULL	NULL	NULL	NULL	view
v5	NULL	NULL	NULL	NULL	NULL	NULL	NULL	NULL	NULL	NULL	#	#	NULL	NULL	NULL	NULL	view
v6	NULL	NULL	NULL	NULL	NULL	NULL	NULL	NULL	NULL	NULL	#	#	NULL	NULL	NULL	NULL	view
drop view v1,v2,v3,v4,v5,v6;
create view v1 (c,d,e,f) as select a,b,
a in (select a+2 from t1), a = all (select a from t1) from t1;
create view v2 as select c, d from v1;
select * from v1;
c	d	e	f
1	2	0	0
1	3	0	0
2	4	0	0
2	5	0	0
3	10	1	0
select * from v2;
c	d
1	2
1	3
2	4
2	5
3	10
create view v1 (c,d,e,f) as select a,b, a in (select a+2 from t1), a = all (select a from t1) from t1;
ERROR 42S01: Table 'v1' already exists
create or replace view v1 (c,d,e,f) as select a,b, a in (select a+2 from t1), a = all (select a from t1) from t1;
drop view v2;
alter view v2 as select c, d from v1;
ERROR 42S02: Table 'test.v2' doesn't exist
create or replace view v2 as select c, d from v1;
alter view v1 (c,d) as select a,max(b) from t1 group by a;
select * from v1;
c	d
1	3
2	5
3	10
select * from v2;
c	d
1	3
2	5
3	10
drop view v100;
ERROR 42S02: Unknown table 'test.v100'
drop view t1;
ERROR HY000: 'test.t1' is not VIEW
drop table v1;
ERROR 42S02: Unknown table 'v1'
drop view v1,v2;
drop table t1;
create table t1 (a int);
insert into t1 values (1), (2), (3);
create view v1 (a) as select a+1 from t1;
create view v2 (a) as select a-1 from t1;
select * from t1 natural left join v1;
a	a
1	NULL
2	2
3	3
select * from v2 natural left join t1;
a	a
0	NULL
1	1
2	2
select * from v2 natural left join v1;
a	a
0	NULL
1	NULL
2	2
drop view v1, v2;
drop table t1;
create table t1 (a int);
insert into t1 values (1), (2), (3), (1), (2), (3);
create view v1 as select distinct a from t1;
select * from v1;
a
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	3	
2	DERIVED	t1	ALL	NULL	NULL	NULL	NULL	6	Using temporary
select * from t1;
a
1
2
3
1
2
3
drop view v1;
drop table t1;
create table t1 (a int);
create view v1 as select distinct a from t1 WITH CHECK OPTION;
ERROR HY000: CHECK OPTION on non-updatable view 'test.v1'
create view v1 as select a from t1 WITH CHECK OPTION;
create view v2 as select a from t1 WITH CASCADED CHECK OPTION;
create view v3 as select a from t1 WITH LOCAL CHECK OPTION;
drop view v3 RESTRICT;
drop view v2 CASCADE;
drop view v1;
drop table t1;
create table t1 (a int, b int);
insert into t1 values (1,2), (1,3), (2,4), (2,5), (3,10);
create view v1 (c) as select b+1 from t1;
select test.c from v1 test;
c
3
4
5
6
11
create algorithm=temptable view v2 (c) as select b+1 from t1;
select test.c from v2 test;
c
3
4
5
6
11
select test1.* from v1 test1, v2 test2 where test1.c=test2.c;
c
3
4
5
6
11
select test2.* from v1 test1, v2 test2 where test1.c=test2.c;
c
3
4
5
6
11
drop table t1;
drop view v1,v2;
create table t1 (a int);
insert into t1 values (1), (2), (3), (4);
create view v1 as select a+1 from t1 order by 1 desc limit 2;
select * from v1;
a+1
5
4
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);
insert into t1 values (1), (2), (3), (4);
create view v1 as select a+1 from t1;
create table t2 select * from v1;
show columns from t2;
Field	Type	Null	Key	Default	Extra
a+1	bigint(12)	YES		NULL	
select * from t2;
a+1
2
3
4
5
drop view v1;
drop table t1,t2;
create table t1 (a int, b int, primary key(a));
insert into t1 values (10,2), (20,3), (30,4), (40,5), (50,10);
create view v1 (a,c) as select a, b+1 from t1;
create algorithm=temptable view v2 (a,c) as select a, b+1 from t1;
update v1 set c=a+c;
ERROR HY000: Column 'c' is not updatable
update v2 set a=a+c;
ERROR HY000: The target table v2 of the UPDATE is not updatable
update v1 set a=a+c;
select * from v1;
a	c
13	3
24	4
35	5
46	6
61	11
select * from t1;
a	b
13	2
24	3
35	4
46	5
61	10
drop table t1;
drop view v1,v2;
create table t1 (a int, b int, primary key(a));
insert into t1 values (10,2), (20,3), (30,4), (40,5), (50,10);
create table t2 (x int);
insert into t2 values (10), (20);
create view v1 (a,c) as select a, b+1 from t1;
create algorithm=temptable view v2 (a,c) as select a, b+1 from t1;
update t2,v1 set v1.c=v1.a+v1.c where t2.x=v1.a;
ERROR HY000: Column 'c' is not updatable
update t2,v2 set v2.a=v2.v2.a+c where t2.x=v2.a;
ERROR HY000: The target table v2 of the UPDATE is not updatable
update t2,v1 set v1.a=v1.a+v1.c where t2.x=v1.a;
select * from v1;
a	c
13	3
24	4
30	5
40	6
50	11
select * from t1;
a	b
13	2
24	3
30	4
40	5
50	10
drop table t1,t2;
drop view v1,v2;
create table t1 (a int, b int, primary key(b));
insert into t1 values (1,20), (2,30), (3,40), (4,50), (5,100);
create view v1 (c) as select b from t1 where a<3;
select * from v1;
c
20
30
explain extended select * from v1;
id	select_type	table	type	possible_keys	key	key_len	ref	rows	Extra
1	PRIMARY	t1	ALL	NULL	NULL	NULL	NULL	5	Using where
Warnings:
Note	1003	select `test`.`t1`.`b` AS `c` from `test`.`v1` where (`test`.`t1`.`a` < 3)
update v1 set c=c+1;
select * from t1;
a	b
1	21
2	31
3	40
4	50
5	100
create view v2 (c) as select b from t1 where a>=3;
select * from v1, v2;
c	c
21	40
31	40
21	50
31	50
21	100
31	100
drop view v1, v2;
drop table t1;
create table t1 (a int, b int, primary key(a));
insert into t1 values (1,2), (2,3), (3,4), (4,5), (5,10);
create view v1 (a,c) as select a, b+1 from t1;
create algorithm=temptable view v2 (a,c) as select a, b+1 from t1;
delete from v2 where c < 4;
ERROR HY000: The target table v2 of the DELETE is not updatable
delete from v1 where c < 4;
select * from v1;
a	c
2	4
3	5
4	6
5	11
select * from t1;
a	b
2	3
3	4
4	5
5	10
drop table t1;
drop view v1,v2;
create table t1 (a int, b int, primary key(a));
insert into t1 values (1,2), (2,3), (3,4), (4,5), (5,10);
create table t2 (x int);
insert into t2 values (1), (2), (3), (4);
create view v1 (a,c) as select a, b+1 from t1;
create algorithm=temptable view v2 (a,c) as select a, b+1 from t1;
delete v2 from t2,v2 where t2.x=v2.a;
ERROR HY000: The target table v2 of the DELETE is not updatable
delete v1 from t2,v1 where t2.x=v1.a;
select * from v1;
a	c
5	11
select * from t1;
a	b
5	10
drop table t1,t2;
drop view v1,v2;
create table t1 (a int, b int, c int, primary key(a,b));
insert into t1 values (10,2,-1), (20,3,-2), (30,4,-3), (40,5,-4), (50,10,-5);
create view v1 (x,y) as select a, b from t1;
create view v2 (x,y) as select a, c from t1;
set updatable_views_with_limit=NO;
update v1 set x=x+1;
update v2 set x=x+1;
update v1 set x=x+1 limit 1;
update v2 set x=x+1 limit 1;
ERROR HY000: The target table v2 of the UPDATE is not updatable
set updatable_views_with_limit=YES;
update v1 set x=x+1 limit 1;
update v2 set x=x+1 limit 1;
Warnings:
Note	1355	View being updated does not have complete key of underlying table in it
set updatable_views_with_limit=DEFAULT;
show variables like "updatable_views_with_limit";
Variable_name	Value
updatable_views_with_limit	YES
select * from t1;
a	b	c
15	2	-1
22	3	-2
32	4	-3
42	5	-4
52	10	-5
drop table t1;
drop view v1,v2;
create table t1 (a int, b int, c int, primary key(a,b));
insert into t1 values (10,2,-1), (20,3,-2);
create view v1 (x,y,z) as select c, b, a from t1;
create view v2 (x,y) as select b, a from t1;
create view v3 (x,y,z) as select b, a, b from t1;
create view v4 (x,y,z) as select c+1, b, a from t1;
create algorithm=temptable view v5 (x,y,z) as select c, b, a from t1;
insert into v3 values (-60,4,30);
ERROR HY000: The target table v3 of the INSERT is not updatable
insert into v4 values (-60,4,30);
ERROR HY000: The target table v4 of the INSERT is not updatable
insert into v5 values (-60,4,30);
ERROR HY000: The target table v5 of the INSERT is not updatable
insert into v1 values (-60,4,30);
insert into v1 (z,y,x) values (50,6,-100);
insert into v2 values (5,40);
select * from t1;
a	b	c
10	2	-1
20	3	-2
30	4	-60
50	6	-100
40	5	NULL
drop table t1;
drop view v1,v2,v3,v4,v5;
create table t1 (a int, b int, c int, primary key(a,b));
insert into t1 values (10,2,-1), (20,3,-2);
create table t2 (a int, b int, c int, primary key(a,b));
insert into t2 values (30,4,-60);
create view v1 (x,y,z) as select c, b, a from t1;
create view v2 (x,y) as select b, a from t1;
create view v3 (x,y,z) as select b, a, b from t1;
create view v4 (x,y,z) as select c+1, b, a from t1;
create algorithm=temptable view v5 (x,y,z) as select c, b, a from t1;
insert into v3 select c, b, a from t2;
ERROR HY000: The target table v3 of the INSERT is not updatable
insert into v4 select c, b, a from t2;
ERROR HY000: The target table v4 of the INSERT is not updatable
insert into v5 select c, b, a from t2;
ERROR HY000: The target table v5 of the INSERT is not updatable
insert into v1 select c, b, a from t2;
insert into v1 (z,y,x) select a+20,b+2,-100 from t2;
insert into v2 select b+1, a+10 from t2;
select * from t1;
a	b	c
10	2	-1
20	3	-2
30	4	-60
50	6	-100
40	5	NULL
drop table t1, t2;
drop view v1,v2,v3,v4,v5;
create table t1 (a int, primary key(a));
insert into t1 values (1), (2), (3);
create view v1 (x) as select a from t1 where a > 1;
select t1.a, v1.x from t1 left join v1 on (t1.a= v1.x);
a	x
1	NULL
2	2
3	3
drop table t1;
drop view v1;
create table t1 (a int, primary key(a));
insert into t1 values (1), (2), (3), (200);
create view v1 (x) as select a from t1 where a > 1;
create view v2 (y) as select x from v1 where x < 100;
select * from v2;
y
2
3
drop table t1;
drop view v1,v2;
create table t1 (a int, primary key(a));
insert into t1 values (1), (2), (3), (200);
create ALGORITHM=TEMPTABLE view v1 (x) as select a from t1;
create view v2 (y) as select x from v1;
update v2 set y=10 where y=2;
ERROR HY000: The target table v2 of the UPDATE is not updatable
drop table t1;
drop view v1,v2;
create table t1 (a int not null auto_increment, b int not null, primary key(a), unique(b));
create view v1 (x) as select b from t1;
insert into v1 values (1);
select last_insert_id();
last_insert_id()
0
insert into t1 (b) values (2);
select last_insert_id();
last_insert_id()
2
select * from t1;
a	b
1	1
2	2
drop view v1;
drop table t1;
set sql_mode='ansi';
create table t1 ("a*b" int);
create view v1 as select "a*b" from t1;
show create view v1;
View	Create View
v1	CREATE VIEW "test"."v1" AS select `test`.`t1`.`a*b` AS `a*b` from `test`.`t1`
drop view v1;
drop table t1;
set sql_mode=default;
create table t1 (t_column int);
create view v1 as select 'a';
select * from v1, t1;
a	t_column
drop view v1;
drop table t1;
create table `t1a``b` (col1 char(2));
create view v1 as select * from `t1a``b`;
select * from v1;
col1
describe v1;
Field	Type	Null	Key	Default	Extra
col1	varchar(2)	YES		NULL	
drop view v1;
drop table `t1a``b`;
create table t1 (col1 char(5),col2 char(5));
create view v1 as select * from t1;
drop table t1;
create table t1 (col1 char(5),newcol2 char(5));
insert into v1 values('a','aa');
ERROR HY000: View 'test.v1' references invalid table(s) or column(s) or function(s)
drop table t1;
select * from v1;
ERROR HY000: View 'test.v1' references invalid table(s) or column(s) or function(s)
drop view v1;
create view v1 (a,a) as select 'a','a';
ERROR 42S21: Duplicate column name 'a'
create table t1 (col1 int,col2 char(22));
insert into t1 values(5,'Hello, world of views');
create view v1 as select * from t1;
create view v2 as select * from v1;
update v2 set col2='Hello, view world';
select * from t1;
col1	col2
5	Hello, view world
drop view v2, v1;
drop table t1;
create table t1 (a int, b int);
create view v1 as select a, sum(b) from t1 group by a;
select b from v1 use index (some_index) where b=1;
ERROR 42000: Key column 'some_index' doesn't exist in table
drop view v1;
drop table t1;
create table t1 (col1 char(5),col2 char(5));
create view v1 (col1,col2) as select col1,col2 from t1;
insert into v1 values('s1','p1'),('s1','p2'),('s1','p3'),('s1','p4'),('s2','p1'),('s3','p2'),('s4','p4');
select distinct first.col2 from t1 first where first.col2 in (select second.col2 from t1 second where second.col1<>first.col1);
col2
p1
p2
p4
select distinct first.col2 from v1 first where first.col2 in (select second.col2 from t1 second where second.col1<>first.col1);
col2
p1
p2
p4
drop view v1;
drop table t1;
create table t1 (a int);
create view v1 as select a from t1;
insert into t1 values (1);
SET @v0 = '2';
PREPARE stmt FROM 'UPDATE v1 SET a = ?';
EXECUTE stmt USING @v0;
DEALLOCATE PREPARE stmt;
SET @v0 = '3';
PREPARE stmt FROM 'insert into v1 values (?)';
EXECUTE stmt USING @v0;
DEALLOCATE PREPARE stmt;
SET @v0 = '4';
PREPARE stmt FROM 'insert into v1 (a) values (?)';
EXECUTE stmt USING @v0;
DEALLOCATE PREPARE stmt;
select * from t1;
a
2
3
4
drop view v1;
drop table t1;
CREATE VIEW v02 AS SELECT * FROM DUAL;
ERROR HY000: No tables used
SHOW TABLES;
Tables_in_test
CREATE VIEW v1 AS SELECT EXISTS (SELECT 1 UNION SELECT 2);
select * from v1;
EXISTS (SELECT 1 UNION SELECT 2)
1
drop view v1;
create table t1 (col1 int,col2 char(22));
create view v1 as select * from t1;
create index i1 on v1 (col1);
ERROR HY000: 'test.v1' is not BASE TABLE
drop view v1;
drop table t1;
CREATE VIEW v1 (f1,f2,f3,f4) AS SELECT connection_id(), pi(), current_user(), version();
SHOW CREATE VIEW v1;
View	Create View
v1	CREATE ALGORITHM=UNDEFINED VIEW `test`.`v1` AS select sql_no_cache connection_id() AS `f1`,pi() AS `f2`,current_user() AS `f3`,version() AS `f4`
drop view v1;
create table t1 (s1 int);
create table t2 (s2 int);
insert into t1 values (1), (2);
insert into t2 values (2), (3);
create view v1 as select * from t1,t2 union all select * from t1,t2;
select * from v1;
s1	s2
1	2
2	2
1	3
2	3
1	2
2	2
1	3
2	3
drop view v1;
drop tables t1, t2;
create table t1 (col1 int);
insert into t1 values (1);
create view v1 as select count(*) from t1;
insert into t1 values (null);
select * from v1;
count(*)
2
drop view v1;
drop table t1;
create table t1 (a int);
create table t2 (a int);
create view v1 as select a from t1;
create view v2 as select a from t2 where a in (select a from v1);
show create view v2;
View	Create View
v2	CREATE ALGORITHM=UNDEFINED VIEW `test`.`v2` AS select `test`.`t2`.`a` AS `a` from `test`.`t2` where `a` in (select `v1`.`a` AS `a` from `test`.`v1`)
drop view v2, v1;
drop table t1, t2;
CREATE VIEW `v 1` AS select 5 AS `5`;
show create view `v 1`;
View	Create View
v 1	CREATE ALGORITHM=UNDEFINED VIEW `test`.`v 1` AS select 5 AS `5`
drop view `v 1`;
create database mysqltest;
create table mysqltest.t1 (a int, b int);
create view mysqltest.v1 as select a from mysqltest.t1;
alter view mysqltest.v1 as select b from mysqltest.t1;
alter view mysqltest.v1 as select a from mysqltest.t1;
drop database mysqltest;
CREATE TABLE t1 (c1 int not null auto_increment primary key, c2 varchar(20), fulltext(c2));
insert into t1 (c2) VALUES ('real Beer'),('Water'),('Kossu'),('Coca-Cola'),('Vodka'),('Wine'),('almost real Beer');
select * from t1 WHERE match (c2) against ('Beer');
c1	c2
1	real Beer
7	almost real Beer
CREATE VIEW v1 AS SELECT  * from t1 WHERE match (c2) against ('Beer');
select * from v1;
c1	c2
1	real Beer
7	almost real Beer
drop view v1;
drop table t1;
create table t1 (a int);
insert into t1 values (1),(1),(2),(2),(3),(3);
create view v1 as select a from t1;
select distinct a from v1;
a
1
2
3
select distinct a from v1 limit 2;
a
1
2
select distinct a from t1 limit 2;
a
1
2
prepare stmt1 from "select distinct a from v1 limit 2";
execute stmt1;
a
1
2
execute stmt1;
a
1
2
deallocate prepare stmt1;
drop view v1;
drop table t1;
create table t1 (tg_column bigint);
create view v1 as select count(tg_column) as vg_column from t1;
select avg(vg_column) from v1;
avg(vg_column)
0.0000
drop view v1;
drop table t1;
create table t1 (col1 bigint not null, primary key (col1));
create table t2 (col1 bigint not null, key (col1));
create view v1 as select * from t1;
create view v2 as select * from t2;
insert into v1 values (1);
insert into v2 values (1);
create view v3 (a,b) as select v1.col1 as a, v2.col1 as b from v1, v2 where v1.col1 = v2.col1;
select * from v3;
a	b
1	1
show create view v3;
View	Create View
v3	CREATE ALGORITHM=UNDEFINED VIEW `test`.`v3` AS select `v1`.`col1` AS `a`,`v2`.`col1` AS `b` from `test`.`v1` join `test`.`v2` where (`v1`.`col1` = `v2`.`col1`)
drop view v3, v2, v1;
drop table t2, t1;
create function `f``1` () returns int return 5;
create view v1 as select test.`f``1` ();
show create view v1;
View	Create View
v1	CREATE ALGORITHM=UNDEFINED VIEW `test`.`v1` AS select sql_no_cache `test`.`f``1`() AS `test.``f````1`` ()`
select * from v1;
test.`f``1` ()
5
drop view v1;
drop function `f``1`;
create function x () returns int return 5;
create view v1 as select x ();
select * from v1;
x ()
5
drop view v1;
drop function x;
create table t2 (col1 char collate latin1_german2_ci);
create view v2 as select col1 collate latin1_german1_ci from t2;
show create view v2;
View	Create View
v2	CREATE ALGORITHM=UNDEFINED VIEW `test`.`v2` AS select (`test`.`t2`.`col1` collate latin1_german1_ci) AS `col1 collate latin1_german1_ci` from `test`.`t2`
show create view v2;
View	Create View
v2	CREATE ALGORITHM=UNDEFINED VIEW `test`.`v2` AS select (`test`.`t2`.`col1` collate latin1_german1_ci) AS `col1 collate latin1_german1_ci` from `test`.`t2`
drop view v2;
drop table t2;
create table t1 (a int);
insert into t1 values (1), (2);
create view v1 as select 5 from t1 order by 1;
select * from v1;
5
5
5
drop view v1;
drop table t1;
create function x1 () returns int return 5;
create table t1 (s1 int);
create view v1 as select x1() from t1;
drop function x1;
select * from v1;
ERROR HY000: View 'test.v1' references invalid table(s) or column(s) or function(s)
show table status;
Name	Engine	Version	Row_format	Rows	Avg_row_length	Data_length	Max_data_length	Index_length	Data_free	Auto_increment	Create_time	Update_time	Check_time	Collation	Checksum	Create_options	Comment
t1	MyISAM	10	Fixed	0	0	0	#	1024	0	NULL	#	#	NULL	latin1_swedish_ci	NULL		
v1	NULL	NULL	NULL	NULL	NULL	NULL	#	NULL	NULL	NULL	#	#	NULL	NULL	NULL	NULL	View 'test.v1' references invalid table(s) or column(s) or function(s)
drop view v1;
drop table t1;
create view v1 as select 99999999999999999999999999999999999999999999999999999 as col1;
show create view v1;
View	Create View
v1	CREATE ALGORITHM=UNDEFINED VIEW `test`.`v1` AS select 99999999999999999999999999999999999999999999999999999 AS `col1`
drop view v1;
create table t<> (c<> char);
create view v<> as select c<> from t<>;
insert into v<> values ('<27>');
select * from v<>;
c<EFBFBD>
<EFBFBD>
drop view v<>;
drop table t<>;
create table t1 (a int, b int);
insert into t1 values (1,2), (1,3), (2,4), (2,5), (3,10);
create view v1(c) as select a+1 from t1 where b >= 4;
select c from v1 where exists (select * from t1 where a=2 and b=c);
c
4
drop view v1;
drop table t1;
create view v1 as select cast(1 as char(3));
show create view v1;
View	Create View
v1	CREATE ALGORITHM=UNDEFINED VIEW `test`.`v1` AS select cast(1 as char(3) charset latin1) AS `cast(1 as char(3))`
select * from v1;
cast(1 as char(3))
1
drop view v1;
create view v1 as select 'a',1;
create view v2 as select * from v1 union all select * from v1;
create view v3 as select * from v2 where 1 = (select `1` from v2);
create view v4 as select * from v3;
select * from v4;
ERROR 21000: Subquery returns more than 1 row
drop view v4, v3, v2, v1;
create view v1 as select 5 into @w;
ERROR HY000: View's SELECT contains a 'INTO' clause
create view v1 as select 5 into outfile 'ttt';
ERROR HY000: View's SELECT contains a 'INTO' clause
create table t1 (a int);
create view v1 as select a from t1 procedure analyse();
ERROR HY000: View's SELECT contains a 'PROCEDURE' clause
drop table t1;
create table t1 (s1 int, primary key (s1));
create view v1 as select * from t1;
insert into v1 values (1) on duplicate key update s1 = 7;
insert into v1 values (1) on duplicate key update s1 = 7;
select * from t1;
s1
7
drop view v1;
drop table t1;
create table t1 (col1 int);
create table t2 (col1 int);
create view v1 as select * from t1;
create view v2 as select * from v1;
create view v3 as select v2.col1 from v2,t2 where v2.col1 = t2.col1;
update v2 set col1 = (select max(col1) from v1);
ERROR HY000: You can't specify target table 'v2' for update in FROM clause
update v2 set col1 = (select max(col1) from t1);
ERROR HY000: You can't specify target table 'v2' for update in FROM clause
update v2 set col1 = (select max(col1) from v2);
ERROR HY000: You can't specify target table 'v2' for update in FROM clause
update v2,t2 set v2.col1 = (select max(col1) from v1) where v2.col1 = t2.col1;
ERROR HY000: You can't specify target table 'v2' for update in FROM clause
update t1,t2 set t1.col1 = (select max(col1) from v1) where t1.col1 = t2.col1;
ERROR HY000: You can't specify target table 't1' for update in FROM clause
update v1,t2 set v1.col1 = (select max(col1) from v1) where v1.col1 = t2.col1;
ERROR HY000: You can't specify target table 'v1' for update in FROM clause
update t2,v2 set v2.col1 = (select max(col1) from v1) where v2.col1 = t2.col1;
ERROR HY000: You can't specify target table 't2' for update in FROM clause
update t2,t1 set t1.col1 = (select max(col1) from v1) where t1.col1 = t2.col1;
ERROR HY000: You can't specify target table 't2' for update in FROM clause
update t2,v1 set v1.col1 = (select max(col1) from v1) where v1.col1 = t2.col1;
ERROR HY000: You can't specify target table 't2' for update in FROM clause
update v2,t2 set v2.col1 = (select max(col1) from t1) where v2.col1 = t2.col1;
ERROR HY000: You can't specify target table 'v2' for update in FROM clause
update t1,t2 set t1.col1 = (select max(col1) from t1) where t1.col1 = t2.col1;
ERROR HY000: You can't specify target table 't1' for update in FROM clause
update v1,t2 set v1.col1 = (select max(col1) from t1) where v1.col1 = t2.col1;
ERROR HY000: You can't specify target table 'v1' for update in FROM clause
update t2,v2 set v2.col1 = (select max(col1) from t1) where v2.col1 = t2.col1;
ERROR HY000: You can't specify target table 't2' for update in FROM clause
update t2,t1 set t1.col1 = (select max(col1) from t1) where t1.col1 = t2.col1;
ERROR HY000: You can't specify target table 't2' for update in FROM clause
update t2,v1 set v1.col1 = (select max(col1) from t1) where v1.col1 = t2.col1;
ERROR HY000: You can't specify target table 't2' for update in FROM clause
update v2,t2 set v2.col1 = (select max(col1) from v2) where v2.col1 = t2.col1;
ERROR HY000: You can't specify target table 'v2' for update in FROM clause
update t1,t2 set t1.col1 = (select max(col1) from v2) where t1.col1 = t2.col1;
ERROR HY000: You can't specify target table 't1' for update in FROM clause
update v1,t2 set v1.col1 = (select max(col1) from v2) where v1.col1 = t2.col1;
ERROR HY000: You can't specify target table 'v1' for update in FROM clause
update t2,v2 set v2.col1 = (select max(col1) from v2) where v2.col1 = t2.col1;
ERROR HY000: You can't specify target table 't2' for update in FROM clause
update t2,t1 set t1.col1 = (select max(col1) from v2) where t1.col1 = t2.col1;
ERROR HY000: You can't specify target table 't2' for update in FROM clause
update t2,v1 set v1.col1 = (select max(col1) from v2) where v1.col1 = t2.col1;
ERROR HY000: You can't specify target table 't2' for update in FROM clause
update v3 set v3.col1 = (select max(col1) from v1);
ERROR HY000: You can't specify target table 'v3' for update in FROM clause
update v3 set v3.col1 = (select max(col1) from t1);
ERROR HY000: You can't specify target table 'v3' for update in FROM clause
update v3 set v3.col1 = (select max(col1) from v2);
ERROR HY000: You can't specify target table 'v3' for update in FROM clause
update v3 set v3.col1 = (select max(col1) from v3);
ERROR HY000: You can't specify target table 'v3' for update in FROM clause
delete from v2 where col1 = (select max(col1) from v1);
ERROR HY000: You can't specify target table 'v2' for update in FROM clause
delete from v2 where col1 = (select max(col1) from t1);
ERROR HY000: You can't specify target table 'v2' for update in FROM clause
delete from v2 where col1 = (select max(col1) from v2);
ERROR HY000: You can't specify target table 'v2' for update in FROM clause
delete v2 from v2,t2 where (select max(col1) from v1) > 0 and v2.col1 = t2.col1;
ERROR HY000: You can't specify target table 'v2' for update in FROM clause
delete t1 from t1,t2 where (select max(col1) from v1) > 0 and t1.col1 = t2.col1;
ERROR HY000: You can't specify target table 't1' for update in FROM clause
delete v1 from v1,t2 where (select max(col1) from v1) > 0 and v1.col1 = t2.col1;
ERROR HY000: You can't specify target table 'v1' for update in FROM clause
delete v2 from v2,t2 where (select max(col1) from t1) > 0 and v2.col1 = t2.col1;
ERROR HY000: You can't specify target table 'v2' for update in FROM clause
delete t1 from t1,t2 where (select max(col1) from t1) > 0 and t1.col1 = t2.col1;
ERROR HY000: You can't specify target table 't1' for update in FROM clause
delete v1 from v1,t2 where (select max(col1) from t1) > 0 and v1.col1 = t2.col1;
ERROR HY000: You can't specify target table 'v1' for update in FROM clause
delete v2 from v2,t2 where (select max(col1) from v2) > 0 and v2.col1 = t2.col1;
ERROR HY000: You can't specify target table 'v2' for update in FROM clause
delete t1 from t1,t2 where (select max(col1) from v2) > 0 and t1.col1 = t2.col1;
ERROR HY000: You can't specify target table 't1' for update in FROM clause
delete v1 from v1,t2 where (select max(col1) from v2) > 0 and v1.col1 = t2.col1;
ERROR HY000: You can't specify target table 'v1' for update in FROM clause
insert into v2 values ((select max(col1) from v1));
ERROR HY000: You can't specify target table 'v2' for update in FROM clause
insert into t1 values ((select max(col1) from v1));
ERROR HY000: You can't specify target table 't1' for update in FROM clause
insert into v2 values ((select max(col1) from v1));
ERROR HY000: You can't specify target table 'v2' for update in FROM clause
insert into v2 values ((select max(col1) from t1));
ERROR HY000: You can't specify target table 'v2' for update in FROM clause
insert into t1 values ((select max(col1) from t1));
ERROR HY000: You can't specify target table 't1' for update in FROM clause
insert into v2 values ((select max(col1) from t1));
ERROR HY000: You can't specify target table 'v2' for update in FROM clause
insert into v2 values ((select max(col1) from v2));
ERROR HY000: You can't specify target table 'v2' for update in FROM clause
insert into t1 values ((select max(col1) from v2));
ERROR HY000: You can't specify target table 't1' for update in FROM clause
insert into v2 values ((select max(col1) from v2));
ERROR HY000: You can't specify target table 'v2' for update in FROM clause
insert into v3 (col1) values ((select max(col1) from v1));
ERROR HY000: You can't specify target table 'v3' for update in FROM clause
insert into v3 (col1) values ((select max(col1) from t1));
ERROR HY000: You can't specify target table 'v3' for update in FROM clause
insert into v3 (col1) values ((select max(col1) from v2));
ERROR HY000: You can't specify target table 'v3' for update in FROM clause
insert into v3 (col1) values ((select CONVERT_TZ('20050101000000','UTC','MET') from v2));
ERROR HY000: You can't specify target table 'v3' for update in FROM clause
insert into v3 (col1) values ((select CONVERT_TZ('20050101000000','UTC','MET') from t2));
insert into mysql.time_zone values ('', (select CONVERT_TZ('20050101000000','UTC','MET') from t2));
ERROR 23000: Column 'Use_leap_seconds' cannot be null
create algorithm=temptable view v4 as select * from t1;
insert into t1 values (1),(2),(3);
insert into t1 (col1) values ((select max(col1) from v4));
select * from t1;
col1
NULL
1
2
3
3
drop view v4,v3,v2,v1;
drop table t1,t2;
create table t1 (s1 int);
create view v1 as select * from t1;
handler v1 open as xx;
ERROR HY000: 'test.v1' is not BASE TABLE
drop view v1;
drop table t1;
create table t1(a int);
insert into t1 values (0), (1), (2), (3);
create table t2 (a int);
insert into t2 select a from t1 where a > 1;
create view v1 as select a from t1 where a > 1;
select * from t1 left join (t2 as t, v1) on v1.a=t1.a;
a	a	a
0	NULL	NULL
1	NULL	NULL
2	2	2
2	3	2
3	2	3
3	3	3
select * from t1 left join (t2 as t, t2) on t2.a=t1.a;
a	a	a
0	NULL	NULL
1	NULL	NULL
2	2	2
2	3	2
3	2	3
3	3	3
drop view v1;
drop table t1, t2;
create table t1 (s1 char);
create view v1 as select s1 collate latin1_german1_ci as s1 from t1;
insert into v1 values ('a');
select * from v1;
s1
a
update v1 set s1='b';
select * from v1;
s1
b
update v1,t1 set v1.s1='c' where t1.s1=v1.s1;
select * from v1;
s1
c
prepare stmt1 from "update v1,t1 set v1.s1=? where t1.s1=v1.s1";
set @arg='d';
execute stmt1 using @arg;
select * from v1;
s1
d
set @arg='e';
execute stmt1 using @arg;
select * from v1;
s1
e
deallocate prepare stmt1;
drop view v1;
drop table t1;
create table t1 (a int);
create table t2 (a int);
create view v1 as select * from t1;
lock tables t1 read, v1 read;
select * from v1;
a
select * from t2;
ERROR HY000: Table 't2' was not locked with LOCK TABLES
drop view v1;
drop table t1, t2;
create table t1 (a int);
create view v1 as select * from t1 where a < 2 with check option;
insert into v1 values(1);
insert into v1 values(3);
ERROR HY000: CHECK OPTION failed 'test.v1'
insert ignore into v1 values (2),(3),(0);
Warnings:
Error	1369	CHECK OPTION failed 'test.v1'
Error	1369	CHECK OPTION failed 'test.v1'
select * from t1;
a
1
0
delete from t1;
insert into v1 SELECT 1;
insert into v1 SELECT 3;
ERROR HY000: CHECK OPTION failed 'test.v1'
create table t2 (a int);
insert into t2 values (2),(3),(0);
insert ignore into v1 SELECT a from t2;
Warnings:
Error	1369	CHECK OPTION failed 'test.v1'
Error	1369	CHECK OPTION failed 'test.v1'
select * from t1;
a
1
0
update v1 set a=-1 where a=0;
update v1 set a=2 where a=1;
ERROR HY000: CHECK OPTION failed 'test.v1'
select * from t1;
a
1
-1
update v1 set a=0 where a=0;
insert into t2 values (1);
update v1,t2 set v1.a=v1.a-1 where v1.a=t2.a;
select * from t1;
a
0
-1
update v1 set a=a+1;
update ignore v1,t2 set v1.a=v1.a+1 where v1.a=t2.a;
Warnings:
Error	1369	CHECK OPTION failed 'test.v1'
select * from t1;
a
1
1
drop view v1;
drop table t1, t2;
create table t1 (a int);
create view v1 as select * from t1 where a < 2 with check option;
create view v2 as select * from v1 where a > 0 with local check option;
create view v3 as select * from v1 where a > 0 with cascaded check option;
insert into v2 values (1);
insert into v3 values (1);
insert into v2 values (0);
ERROR HY000: CHECK OPTION failed 'test.v2'
insert into v3 values (0);
ERROR HY000: CHECK OPTION failed 'test.v3'
insert into v2 values (2);
insert into v3 values (2);
ERROR HY000: CHECK OPTION failed 'test.v3'
select * from t1;
a
1
1
2
drop view v3,v2,v1;
drop table t1;
create table t1 (a int, primary key (a));
create view v1 as select * from t1 where a < 2 with check option;
insert into v1 values (1) on duplicate key update a=2;
insert into v1 values (1) on duplicate key update a=2;
ERROR HY000: CHECK OPTION failed 'test.v1'
insert ignore into v1 values (1) on duplicate key update a=2;
Warnings:
Error	1369	CHECK OPTION failed 'test.v1'
select * from t1;
a
1
drop view v1;
drop table t1;
create table t1 (s1 int);
create view v1 as select * from t1;
create view v2 as select * from v1;
alter view v1 as select * from v2;
ERROR 42S02: Table 'test.v1' doesn't exist
alter view v1 as select * from v1;
ERROR 42000: Not unique table/alias: 'v1'
create or replace view v1 as select * from v2;
ERROR 42S02: Table 'test.v1' doesn't exist
create or replace view v1 as select * from v1;
ERROR 42000: Not unique table/alias: 'v1'
drop view v2,v1;
drop table t1;
create table t1 (a int);
create view v1 as select * from t1;
show create view v1;
View	Create View
v1	CREATE ALGORITHM=UNDEFINED VIEW `test`.`v1` AS select `test`.`t1`.`a` AS `a` from `test`.`t1`
alter algorithm=undefined view v1 as select * from t1 with check option;
show create view v1;
View	Create View
v1	CREATE ALGORITHM=UNDEFINED VIEW `test`.`v1` AS select `test`.`t1`.`a` AS `a` from `test`.`t1` WITH CASCADED CHECK OPTION
alter algorithm=merge view v1 as select * from t1 with cascaded check option;
show create view v1;
View	Create View
v1	CREATE ALGORITHM=MERGE VIEW `test`.`v1` AS select `test`.`t1`.`a` AS `a` from `test`.`t1` WITH CASCADED CHECK OPTION
alter algorithm=temptable view v1 as select * from t1;
show create view v1;
View	Create View
v1	CREATE ALGORITHM=TEMPTABLE VIEW `test`.`v1` AS select `test`.`t1`.`a` AS `a` from `test`.`t1`
drop view v1;
drop table t1;
create table t1 (s1 int);
create table t2 (s1 int);
create view v2 as select * from t2 where s1 in (select s1 from t1);
insert into v2 values (5);
insert into t1 values (5);
select * from v2;
s1
5
update v2 set s1 = 0;
select * from v2;
s1
select * from t2;
s1
0
alter view v2 as select * from t2 where s1 in (select s1 from t1) with check option;
insert into v2 values (5);
update v2 set s1 = 1;
ERROR HY000: CHECK OPTION failed 'test.v2'
insert into t1 values (1);
update v2 set s1 = 1;
select * from v2;
s1
1
select * from t2;
s1
0
1
prepare stmt1 from "select * from v2;";
execute stmt1;
s1
1
insert into t1 values (0);
execute stmt1;
s1
0
1
deallocate prepare stmt1;
drop view v2;
drop table t1, t2;
create table t1 (t time);
create view v1 as select substring_index(t,':',2) as t from t1;
insert into t1 (t) values ('12:24:10');
select substring_index(t,':',2) from t1;
substring_index(t,':',2)
12:24
select substring_index(t,':',2) from v1;
substring_index(t,':',2)
12:24
drop view v1;
drop table t1;
create table t1 (s1 tinyint);
create view v1 as select * from t1 where s1 <> 0 with local check option;
create view v2 as select * from v1 with cascaded check option;
insert into v2 values (0);
ERROR HY000: CHECK OPTION failed 'test.v2'
drop view v2, v1;
drop table t1;
create table t1 (s1 int);
create view v1 as select * from t1 where s1 < 5 with check option;
insert ignore into v1 values (6);
ERROR HY000: CHECK OPTION failed 'test.v1'
insert ignore into v1 values (6),(3);
Warnings:
Error	1369	CHECK OPTION failed 'test.v1'
select * from t1;
s1
3
drop view v1;
drop table t1;
create table t1 (s1 tinyint);
create trigger t1_bi before insert on t1 for each row set new.s1 = 500;
create view v1 as select * from t1 where s1 <> 127 with check option;
insert into v1 values (0);
ERROR HY000: CHECK OPTION failed 'test.v1'
select * from v1;
s1
select * from t1;
s1
drop trigger t1.t1_bi;
drop view v1;
drop table t1;
create table t1 (s1 tinyint);
create view v1 as select * from t1 where s1 <> 0;
create view v2 as select * from v1 where s1 <> 1 with cascaded check option;
insert into v2 values (0);
ERROR HY000: CHECK OPTION failed 'test.v2'
select * from v2;
s1
select * from t1;
s1
drop view v2, v1;
drop table t1;
create table t1 (a int, b char(10));
create view v1 as select * from t1 where a != 0 with check option;
load data infile '../../std_data/loaddata3.dat' into table v1 fields terminated by '' enclosed by '' ignore 1 lines;
ERROR HY000: CHECK OPTION failed 'test.v1'
select * from t1;
a	b
1	row 1
2	row 2
select * from v1;
a	b
1	row 1
2	row 2
delete from t1;
load data infile '../../std_data/loaddata3.dat' ignore into table v1 fields terminated by '' enclosed by '' ignore 1 lines;
Warnings:
Warning	1264	Out of range value adjusted for column 'a' at row 3
Error	1369	CHECK OPTION failed 'test.v1'
Warning	1264	Out of range value adjusted for column 'a' at row 4
Error	1369	CHECK OPTION failed 'test.v1'
select * from t1;
a	b
1	row 1
2	row 2
3	row 3
select * from v1;
a	b
1	row 1
2	row 2
3	row 3
drop view v1;
drop table t1;
create table t1 (a text, b text);
create view v1 as select * from t1 where a <> 'Field A' with check option;
load data infile '../../std_data/loaddata2.dat' into table v1 fields terminated by ',' enclosed by '''';
ERROR HY000: CHECK OPTION failed 'test.v1'
select concat('|',a,'|'), concat('|',b,'|') from t1;
concat('|',a,'|')	concat('|',b,'|')
select concat('|',a,'|'), concat('|',b,'|') from v1;
concat('|',a,'|')	concat('|',b,'|')
delete from t1;
load data infile '../../std_data/loaddata2.dat' ignore into table v1 fields terminated by ',' enclosed by '''';
Warnings:
Error	1369	CHECK OPTION failed 'test.v1'
Warning	1261	Row 2 doesn't contain data for all columns
select concat('|',a,'|'), concat('|',b,'|') from t1;
concat('|',a,'|')	concat('|',b,'|')
|Field 1|	|Field 2' 
Field 3,'Field 4|
|Field 5' ,'Field 6|	NULL
|Field 6|	| 'Field 7'|
select concat('|',a,'|'), concat('|',b,'|') from v1;
concat('|',a,'|')	concat('|',b,'|')
|Field 1|	|Field 2' 
Field 3,'Field 4|
|Field 5' ,'Field 6|	NULL
|Field 6|	| 'Field 7'|
drop view v1;
drop table t1;
create table t1 (s1 smallint);
create view v1 as select * from t1 where 20 < (select (s1) from t1);
insert into v1 values (30);
ERROR HY000: The target table v1 of the INSERT is not updatable
create view v2 as select * from t1;
create view v3 as select * from t1 where 20 < (select (s1) from v2);
insert into v3 values (30);
ERROR HY000: The target table v3 of the INSERT is not updatable
create view v4 as select * from v2 where 20 < (select (s1) from t1);
insert into v4 values (30);
ERROR HY000: You can't specify target table 'v4' for update in FROM clause
drop view v4, v3, v2, v1;
drop table t1;
create table t1 (a int);
create view v1 as select * from t1;
check table t1,v1;
Table	Op	Msg_type	Msg_text
test.t1	check	status	OK
test.v1	check	status	OK
check table v1,t1;
Table	Op	Msg_type	Msg_text
test.v1	check	status	OK
test.t1	check	status	OK
drop table t1;
check table v1;
Table	Op	Msg_type	Msg_text
test.v1	check	error	View 'test.v1' references invalid table(s) or column(s) or function(s)
drop view v1;
create table t1 (a int);
create table t2 (a int);
create table t3 (a int);
insert into t1 values (1), (2), (3);
insert into t2 values (1), (3);
insert into t3 values (1), (2), (4);
create view v3 (a,b) as select t1.a as a, t2.a as b from t1 left join t2 on (t1.a=t2.a);
select * from t3 left join v3 on (t3.a = v3.a);
a	a	b
1	1	1
2	2	NULL
4	NULL	NULL
explain extended select * from t3 left join v3 on (t3.a = v3.a);
id	select_type	table	type	possible_keys	key	key_len	ref	rows	Extra
1	PRIMARY	t3	ALL	NULL	NULL	NULL	NULL	3	
1	PRIMARY	t1	ALL	NULL	NULL	NULL	NULL	3	
1	PRIMARY	t2	ALL	NULL	NULL	NULL	NULL	2	
Warnings:
Note	1003	select `test`.`t3`.`a` AS `a`,`test`.`t1`.`a` AS `a`,`test`.`t2`.`a` AS `b` from `test`.`t3` left join (`test`.`t1` left join `test`.`t2` on((`test`.`t1`.`a` = `test`.`t2`.`a`))) on((`test`.`t3`.`a` = `test`.`t1`.`a`)) where 1
create view v1 (a) as select a from t1;
create view v2 (a) as select a from t2;
create view v4 (a,b) as select v1.a as a, v2.a as b from v1 left join v2 on (v1.a=v2.a);
select * from t3 left join v4 on (t3.a = v4.a);
a	a	b
1	1	1
2	2	NULL
4	NULL	NULL
explain extended select * from t3 left join v4 on (t3.a = v4.a);
id	select_type	table	type	possible_keys	key	key_len	ref	rows	Extra
1	PRIMARY	t3	ALL	NULL	NULL	NULL	NULL	3	
1	PRIMARY	t1	ALL	NULL	NULL	NULL	NULL	3	
1	PRIMARY	t2	ALL	NULL	NULL	NULL	NULL	2	
Warnings:
Note	1003	select `test`.`t3`.`a` AS `a`,`test`.`t1`.`a` AS `a`,`test`.`t2`.`a` AS `b` from `test`.`t3` left join (`test`.`v1` left join `test`.`v2` on((`test`.`t1`.`a` = `test`.`t2`.`a`))) on((`test`.`t3`.`a` = `test`.`t1`.`a`)) where 1
prepare stmt1 from "select * from t3 left join v4 on (t3.a = v4.a);";
execute stmt1;
a	a	b
1	1	1
2	2	NULL
4	NULL	NULL
execute stmt1;
a	a	b
1	1	1
2	2	NULL
4	NULL	NULL
deallocate prepare stmt1;
drop view v4,v3,v2,v1;
drop tables t1,t2,t3;
create table t1 (a int, primary key (a), b int);
create table t2 (a int, primary key (a));
insert into t1 values (1,100), (2,200);
insert into t2 values (1), (3);
create view v3 (a,b) as select t1.a as a, t2.a as b from t1, t2;
update v3 set a= 10 where a=1;
select * from t1;
a	b
10	100
2	200
select * from t2;
a
1
3
create view v2 (a,b) as select t1.b as a, t2.a as b from t1, t2;
set updatable_views_with_limit=NO;
update v2 set a= 10 where a=200 limit 1;
ERROR HY000: The target table t1 of the UPDATE is not updatable
set updatable_views_with_limit=DEFAULT;
select * from v3;
a	b
2	1
10	1
2	3
10	3
select * from v2;
a	b
100	1
200	1
100	3
200	3
set @a= 10;
set @b= 100;
prepare stmt1 from "update v3 set a= ? where a=?";
execute stmt1 using @a,@b;
select * from v3;
a	b
2	1
10	1
2	3
10	3
set @a= 300;
set @b= 10;
execute stmt1 using @a,@b;
select * from v3;
a	b
2	1
300	1
2	3
300	3
deallocate prepare stmt1;
drop view v3,v2;
drop tables t1,t2;
create table t1 (a int, primary key (a), b int);
create table t2 (a int, primary key (a), b int);
insert into t2 values (1000, 2000);
create view v3 (a,b) as select t1.a as a, t2.a as b from t1, t2;
insert into v3 values (1,2);
ERROR HY000: Can not insert into join view 'test.v3' without fields list
insert into v3 select * from t2;
ERROR HY000: Can not insert into join view 'test.v3' without fields list
insert into v3(a,b) values (1,2);
ERROR HY000: Can not modify more than one base table through a join view 'test.v3'
insert into v3(a,b) select * from t2;
ERROR HY000: Can not modify more than one base table through a join view 'test.v3'
insert into v3(a) values (1);
insert into v3(b) values (10);
insert into v3(a) select a from t2;
insert into v3(b) select b from t2;
Warnings:
Warning	1263	Column set to default value; NULL supplied to NOT NULL column 'a' at row 2
insert into v3(a) values (1) on duplicate key update a=a+10000+VALUES(a);
select * from t1;
a	b
10002	NULL
10	NULL
1000	NULL
select * from t2;
a	b
1000	2000
10	NULL
2000	NULL
0	NULL
delete from v3;
ERROR HY000: Can not delete from join view 'test.v3'
delete v3,t1 from v3,t1;
ERROR HY000: Can not delete from join view 'test.v3'
delete t1,v3 from t1,v3;
ERROR HY000: Can not delete from join view 'test.v3'
delete from t1;
prepare stmt1 from "insert into v3(a) values (?);";
set @a= 100;
execute stmt1 using @a;
set @a= 300;
execute stmt1 using @a;
deallocate prepare stmt1;
prepare stmt1 from "insert into v3(a) select ?;";
set @a= 101;
execute stmt1 using @a;
set @a= 301;
execute stmt1 using @a;
deallocate prepare stmt1;
select * from v3;
a	b
100	1000
101	1000
300	1000
301	1000
100	10
101	10
300	10
301	10
100	2000
101	2000
300	2000
301	2000
100	0
101	0
300	0
301	0
drop view v3;
drop tables t1,t2;
create table t1(f1 int);
create view v1 as select f1 from t1;
select * from v1 where F1 = 1;
f1
drop view v1;
drop table t1;
create table t1(c1 int);
create table t2(c2 int);
insert into t1 values (1),(2),(3);
insert into t2 values (1);
SELECT c1 FROM t1 WHERE c1 IN (SELECT c2 FROM t2);
c1
1
SELECT c1 FROM t1 WHERE EXISTS (SELECT c2 FROM t2 WHERE c2 = c1);
c1
1
create view v1 as SELECT c1 FROM t1 WHERE c1 IN (SELECT c2 FROM t2);
create view v2 as SELECT c1 FROM t1 WHERE EXISTS (SELECT c2 FROM t2 WHERE c2 = c1);
select * from v1;
c1
1
select * from v2;
c1
1
select * from (select c1 from v2) X;
c1
1
drop view v2, v1;
drop table t1, t2;
CREATE TABLE t1 (C1 INT, C2 INT);
CREATE TABLE t2 (C2 INT);
CREATE VIEW v1 AS SELECT C2 FROM t2;
CREATE VIEW v2 AS SELECT C1 FROM t1 LEFT OUTER JOIN v1 USING (C2);
SELECT * FROM v2;
C1
drop view v2, v1;
drop table t1, t2;
create table t1 (col1 char(5),col2 int,col3 int);
insert into t1 values ('one',10,25), ('two',10,50), ('two',10,50), ('one',20,25), ('one',30,25);
create view v1 as select * from t1;
select col1,group_concat(col2,col3) from t1 group by col1;
col1	group_concat(col2,col3)
one	1025,2025,3025
two	1050,1050
select col1,group_concat(col2,col3) from v1 group by col1;
col1	group_concat(col2,col3)
two	1025,2025,3025
two	1050,1050
drop view v1;
drop table t1;
create table t1 (s1 int, s2 char);
create view v1 as select s1, s2 from t1;
select s2 from v1 vq1 where 2 = (select count(*) from v1 vq2 having vq1.s2 = vq2.s2);
ERROR 42S22: Unknown column 'vq2.s2' in 'having clause'
select s2 from v1 vq1 where 2 = (select count(*) aa from v1 vq2 having vq1.s2 = aa);
s2
drop view v1;
drop table t1;
CREATE TABLE t1 (a1 int);
CREATE TABLE t2 (a2 int);
INSERT INTO t1 VALUES (1), (2), (3), (4);
INSERT INTO t2 VALUES (1), (2), (3);
CREATE VIEW v1(a,b) AS SELECT a1,a2 FROM t1 JOIN t2 ON a1=a2 WHERE a1>1;
SELECT * FROM v1;
a	b
2	2
3	3
CREATE TABLE t3 SELECT * FROM v1;
SELECT * FROM t3;
a	b
2	2
3	3
DROP VIEW v1;
DROP TABLE t1,t2,t3;
create table t1 (a int);
create table t2 like t1;
create table t3 like t1;
create view v1 as select t1.a x, t2.a y from t1 join t2 where t1.a=t2.a;
insert into t3 select x from v1;
insert into t2 select x from v1;
drop view v1;
drop table t1,t2,t3;
CREATE TABLE t1 (col1 int PRIMARY KEY, col2 varchar(10));
INSERT INTO t1 VALUES(1,'trudy');
INSERT INTO t1 VALUES(2,'peter');
INSERT INTO t1 VALUES(3,'sanja');
INSERT INTO t1 VALUES(4,'monty');
INSERT INTO t1 VALUES(5,'david');
INSERT INTO t1 VALUES(6,'kent');
INSERT INTO t1 VALUES(7,'carsten');
INSERT INTO t1 VALUES(8,'ranger');
INSERT INTO t1 VALUES(10,'matt');
CREATE TABLE t2 (col1 int, col2 int, col3 char(1));
INSERT INTO t2 VALUES (1,1,'y');
INSERT INTO t2 VALUES (1,2,'y');
INSERT INTO t2 VALUES (2,1,'n');
INSERT INTO t2 VALUES (3,1,'n');
INSERT INTO t2 VALUES (4,1,'y');
INSERT INTO t2 VALUES (4,2,'n');
INSERT INTO t2 VALUES (4,3,'n');
INSERT INTO t2 VALUES (6,1,'n');
INSERT INTO t2 VALUES (8,1,'y');
CREATE VIEW v1 AS SELECT * FROM t1;
SELECT a.col1,a.col2,b.col2,b.col3 
FROM t1 a LEFT JOIN t2 b ON a.col1=b.col1
WHERE b.col2 IS NULL OR 
b.col2=(SELECT MAX(col2) FROM t2 b WHERE b.col1=a.col1);
col1	col2	col2	col3
1	trudy	2	y
2	peter	1	n
3	sanja	1	n
4	monty	3	n
5	david	NULL	NULL
6	kent	1	n
7	carsten	NULL	NULL
8	ranger	1	y
10	matt	NULL	NULL
SELECT a.col1,a.col2,b.col2,b.col3 
FROM v1 a LEFT JOIN t2 b ON a.col1=b.col1
WHERE b.col2 IS NULL OR 
b.col2=(SELECT MAX(col2) FROM t2 b WHERE b.col1=a.col1);
col1	col2	col2	col3
1	trudy	2	y
2	peter	1	n
3	sanja	1	n
4	monty	3	n
5	david	NULL	NULL
6	kent	1	n
7	carsten	NULL	NULL
8	ranger	1	y
10	matt	NULL	NULL
CREATE VIEW v2 AS SELECT * FROM t2;
SELECT a.col1,a.col2,b.col2,b.col3
FROM v2 b RIGHT JOIN v1 a ON a.col1=b.col1
WHERE b.col2 IS NULL OR
b.col2=(SELECT MAX(col2) FROM v2 b WHERE b.col1=a.col1);
col1	col2	col2	col3
1	trudy	2	y
2	peter	1	n
3	sanja	1	n
4	monty	3	n
5	david	NULL	NULL
6	kent	1	n
7	carsten	NULL	NULL
8	ranger	1	y
10	matt	NULL	NULL
SELECT a.col1,a.col2,b.col2,b.col3
FROM v2 b RIGHT JOIN v1 a ON a.col1=b.col1
WHERE a.col1 IN (1,5,9) AND
(b.col2 IS NULL OR
b.col2=(SELECT MAX(col2) FROM v2 b WHERE b.col1=a.col1));
col1	col2	col2	col3
1	trudy	2	y
5	david	NULL	NULL
CREATE VIEW v3 AS SELECT * FROM t1 WHERE col1 IN (1,5,9);
SELECT a.col1,a.col2,b.col2,b.col3
FROM v2 b RIGHT JOIN v3 a ON a.col1=b.col1
WHERE b.col2 IS NULL OR
b.col2=(SELECT MAX(col2) FROM v2 b WHERE b.col1=a.col1);
col1	col2	col2	col3
1	trudy	2	y
5	david	NULL	NULL
DROP VIEW v1,v2,v3;
DROP TABLE t1,t2;
create table t1 as select 1 A union select 2 union select 3;
create table t2 as select * from t1;
create view v1 as select * from t1 where a in (select * from t2);
select * from v1 A, v1 B where A.a = B.a;
A	A
1	1
2	2
3	3
create table t3 as select a a,a b from t2;
create view v2 as select * from t3 where 
a in (select * from t1) or b in (select * from t2);
select * from v2 A, v2 B where A.a = B.b;
a	b	a	b
1	1	1	1
2	2	2	2
3	3	3	3
drop view v1, v2;
drop table t1, t2, t3;