view.test

开启mysql的远程连接的方法 mysql-noinstall-5.1.6-alpha-win32.zip

--disable_warnings
drop table if exists t1,t2,t3,t4,t9,`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;
--enable_warnings
use test;

#
# some basic test of views and its functionality
#

# create view on nonexistent table
-- error 1146
create view v1 (c,d) as select a,b from t1;

create temporary table t1 (a int, b int);
# view on temporary table
-- error 1352
create view v1 (c) as select b+1 from 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);

# view with variable
-- error 1351
create view v1 (c,d) as select a,b+@@global.max_user_connections from t1;

# simple view
create view v1 (c) as select b+1 from t1;
select c from v1;

# temporary table should not hide table of view
create temporary table t1 (a int, b int);
# this is empty
select * from t1;
# but this based on normal t1
select c from v1;
show create table v1;
show create view v1;
-- error 1347
show create view t1;
drop table t1;

# try to use fields from underlying table
-- error 1054
select a from v1;
-- error 1054
select v1.a from v1;
-- error 1054
select b from v1;
-- error 1054
select v1.b from v1;

# view with different algorithms (explain output differs)
explain extended select c from v1;
create algorithm=temptable view v2 (c) as select b+1 from t1;
show create view v2;
select c from v2;
explain extended select c from v2;

# try to use underlying table fields in VIEW creation process
-- error 1054
create view v3 (c) as select a+1 from v1;
-- error 1054
create view v3 (c) as select b+1 from v1;


# VIEW on VIEW test with mixing different algorithms on different order
create view v3 (c) as select c+1 from v1;
select c from v3;
explain extended select c from v3;
create algorithm=temptable view v4 (c) as select c+1 from v2;
select c from v4;
explain extended select c from v4;
create view v5 (c) as select c+1 from v2;
select c from v5;
explain extended select c from v5;
create algorithm=temptable view v6 (c) as select c+1 from v1;
select c from v6;
explain extended select c from v6;

# show table/table status test
show tables;
show full tables;
--replace_column 8 # 12 # 13 #
show table status;

drop view v1,v2,v3,v4,v5,v6;

#
# alter/create view test
#

# view with subqueries of different types
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;
select * from v2;

# try to create VIEW with name of existing VIEW
-- error 1050
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;

# 'or replace' should work in this case
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;

# try to ALTER unexisting VIEW
drop view v2;
-- error 1146
alter view v2 as select c, d from v1;

# 'or replace' on unexisting view
create or replace view v2 as select c, d from v1;

# alter view on existing view
alter view v1 (c,d) as select a,max(b) from t1 group by a;

# check that created view works
select * from v1;
select * from v2;

# try to drop nonexistent VIEW
-- error 1051
drop view v100;

# try to drop table with DROP VIEW
-- error 1347
drop view t1;

# try to drop VIEW with DROP TABLE
-- error 1051
drop table v1;

# try to drop table with DROP VIEW

drop view v1,v2;
drop table t1;

#
# outer left join with merged views
#
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;
select * from v2 natural left join t1;
select * from v2 natural left join v1;

drop view v1, v2;
drop table t1;


#
# DISTINCT option for VIEW
#
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;
explain select * from v1;
select * from t1;
drop view v1;
drop table t1;

#
# syntax compatibility
#
create table t1 (a int);
-- error 1368
create view v1 as select distinct a from t1 WITH CHECK OPTION;
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;

#
# aliases
#
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;
create algorithm=temptable view v2 (c) as select b+1 from t1;
select test.c from v2 test;
select test1.* from v1 test1, v2 test2 where test1.c=test2.c;
select test2.* from v1 test1, v2 test2 where test1.c=test2.c;
drop table t1;
drop view v1,v2;

#
# LIMIT clause test
#
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;
explain select * from v1;
drop view v1;
drop table t1;

#
# CREATE ... SELECT view test
#
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;
select * from t2;
drop view v1;
drop table t1,t2;

#
# simple view + simple update
#
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;
# try to update expression
-- error 1348
update v1 set c=a+c;
# try to update VIEW with forced TEMPORARY TABLE algorithm
-- error 1288
update v2 set a=a+c;
# updatable field of updateable view
update v1 set a=a+c;
select * from v1;
select * from t1;
drop table t1;
drop view v1,v2;

#
# simple view + simple multi-update
#
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;
# try to update expression
-- error 1348
update t2,v1 set v1.c=v1.a+v1.c where t2.x=v1.a;
# try to update VIEW with forced TEMPORARY TABLE algorithm
-- error 1288
update t2,v2 set v2.a=v2.v2.a+c where t2.x=v2.a;
# updatable field of updateable view
update t2,v1 set v1.a=v1.a+v1.c where t2.x=v1.a;
select * from v1;
select * from t1;
drop table t1,t2;
drop view v1,v2;

#
# MERGE VIEW with WHERE clause
#
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;
# simple select and explaint to be sure that it is MERGE
select * from v1;
explain extended select * from v1;
# update test
update v1 set c=c+1;
select * from t1;
# join of such VIEWs test
create view v2 (c) as select b from t1 where a>=3;
select * from v1, v2;
drop view v1, v2;
drop table t1;

#
# simple view + simple delete
#
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;
# try to update VIEW with forced TEMPORARY TABLE algorithm
-- error 1288
delete from v2 where c < 4;
# updatable field of updateable view
delete from v1 where c < 4;
select * from v1;
select * from t1;
drop table t1;
drop view v1,v2;

#
# simple view + simple multi-delete
#
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;
# try to update VIEW with forced TEMPORARY TABLE algorithm
-- error 1288
delete v2 from t2,v2 where t2.x=v2.a;
# updatable field of updateable view
delete v1 from t2,v1 where t2.x=v1.a;
select * from v1;
select * from t1;
drop table t1,t2;
drop view v1,v2;

#
# key presence check
#
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;
-- error 1288
update v2 set x=x+1 limit 1;
set updatable_views_with_limit=YES;
update v1 set x=x+1 limit 1;
update v2 set x=x+1 limit 1;
set updatable_views_with_limit=DEFAULT;
show variables like "updatable_views_with_limit";
select * from t1;
drop table t1;
drop view v1,v2;

#
# simple insert
#
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;
# try insert to VIEW with fields duplicate
-- error 1288
insert into v3 values (-60,4,30);
# try insert to VIEW with expression in SELECT list
-- error 1288
insert into v4 values (-60,4,30);
# try insert to VIEW using temporary table algorithm
-- error 1288
insert into v5 values (-60,4,30);
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;
drop table t1;
drop view v1,v2,v3,v4,v5;

#
# insert ... select
#
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;
# try insert to VIEW with fields duplicate
-- error 1288
insert into v3 select c, b, a from t2;
# try insert to VIEW with expression in SELECT list
-- error 1288