mirror of
https://github.com/MariaDB/server.git
synced 2025-08-30 11:22:14 +03:00
163 lines
5.5 KiB
PHP
163 lines
5.5 KiB
PHP
################################################################################
|
|
# inc/vcol_non_stored_columns.inc #
|
|
# #
|
|
# Purpose: #
|
|
# Ensure that MySQL behaviour is consistent irrelevant of #
|
|
# - the place of a non-stored column among other columns, #
|
|
# - the total number of non-stored fields. #
|
|
# #
|
|
#------------------------------------------------------------------------------#
|
|
# Original Author: Andrey Zhakov #
|
|
# Original Date: 2008-09-04 #
|
|
# Change Author: Oleksandr Byelkin (Monty program Ab)
|
|
# Date: 2009-03-24
|
|
# Change: Syntax changed
|
|
################################################################################
|
|
|
|
--echo # Case 1. All non-stored columns.
|
|
--echo # This scenario is currently impossible due to the fact that virtual columns
|
|
--echo # with a constant expression are not allowed.
|
|
|
|
--echo # Case 2. CREATE
|
|
--echo # - Column1: "real"
|
|
--echo # - Column 2: virtual non-stored
|
|
create table t1 (a int, b int as (-a));
|
|
insert into t1 values (1,default);
|
|
select * from t1;
|
|
insert into t1 values (2,default);
|
|
select * from t1;
|
|
drop table t1;
|
|
|
|
--echo # Case 3. CREATE
|
|
--echo # - Column1: "real"
|
|
--echo # - Column 2: virtual stored
|
|
create table t1 (a int, b int as (-a) persistent);
|
|
insert into t1 values (1,default);
|
|
select * from t1;
|
|
insert into t1 values (2,default);
|
|
select * from t1;
|
|
drop table t1;
|
|
|
|
--echo # Case 4. CREATE
|
|
--echo # - Column1: virtual non-stored
|
|
--echo # - Column2: "real"
|
|
create table t1 (a int as (-b), b int);
|
|
insert into t1 values (default,1);
|
|
select * from t1;
|
|
insert into t1 values (default,2);
|
|
select * from t1;
|
|
drop table t1;
|
|
|
|
--echo # Case 5. CREATE
|
|
--echo # - Column1: virtual stored
|
|
--echo # - Column2: "real"
|
|
create table t1 (a int as (-b) persistent, b int);
|
|
insert into t1 values (default,1);
|
|
select * from t1;
|
|
insert into t1 values (default,2);
|
|
select * from t1;
|
|
drop table t1;
|
|
|
|
--echo # Case 6. CREATE
|
|
--echo # - Column1: "real"
|
|
--echo # - Column2: virtual non-stored
|
|
--echo # - Column3: virtual stored
|
|
create table t1 (a int, b int as (-a), c int as (-a) persistent);
|
|
insert into t1 values (1,default,default);
|
|
select * from t1;
|
|
insert into t1 values (2,default,default);
|
|
select * from t1;
|
|
drop table t1;
|
|
|
|
--echo # Case 7. ALTER. Modify virtual stored -> virtual non-stored
|
|
create table t1 (a int, b int as (a % 2) persistent);
|
|
--error ER_UNSUPPORTED_ACTION_ON_VIRTUAL_COLUMN
|
|
alter table t1 modify b int as (a % 2);
|
|
show create table t1;
|
|
drop table t1;
|
|
|
|
--echo # Case 8. ALTER. Modify virtual non-stored -> virtual stored
|
|
create table t1 (a int, b int as (a % 2));
|
|
--error ER_UNSUPPORTED_ACTION_ON_VIRTUAL_COLUMN
|
|
alter table t1 modify b int as (a % 2) persistent;
|
|
show create table t1;
|
|
drop table t1;
|
|
|
|
--echo # Case 9. CREATE LIKE
|
|
--echo # - Column1: "real"
|
|
--echo # - Column2: virtual non-stored
|
|
--echo # - Column3: virtual stored
|
|
create table t1 (a int, b int as (-a), c int as (-a) persistent);
|
|
create table t2 like t1;
|
|
insert into t2 values (1,default,default);
|
|
select * from t2;
|
|
insert into t2 values (2,default,default);
|
|
select * from t2;
|
|
drop table t2;
|
|
drop table t1;
|
|
|
|
--echo # Case 10. ALTER. Dropping a virtual non-stored column.
|
|
--echo # - Column1: virtual non-stored
|
|
--echo # - Column2: "real"
|
|
create table t1 (a int as (-b), b int, c varchar(5));
|
|
insert into t1 values (default,1,'v1');
|
|
insert into t1 values (default,2,'v2');
|
|
select * from t1;
|
|
alter table t1 drop column a;
|
|
select * from t1;
|
|
show create table t1;
|
|
drop table t1;
|
|
|
|
--echo # Case 11. ALTER. Dropping a virtual stored column.
|
|
--echo # - Column1: virtual stored
|
|
--echo # - Column2: "real"
|
|
create table t1 (a int as (-b) persistent, b int, c char(5));
|
|
insert into t1 values (default,1,'v1');
|
|
insert into t1 values (default,2,'v2');
|
|
select * from t1;
|
|
alter table t1 drop column a;
|
|
select * from t1;
|
|
show create table t1;
|
|
drop table t1;
|
|
|
|
--echo # Case 12. ALTER. Adding a new virtual non-stored column.
|
|
create table t1 (a int, b datetime);
|
|
insert into t1 values (1,'2008-09-04');
|
|
insert into t1 values (2,'2008-09-05');
|
|
select * from t1;
|
|
alter table t1 add column c int as (dayofyear(b)) after a;
|
|
select * from t1;
|
|
show create table t1;
|
|
drop table t1;
|
|
|
|
--echo # Case 13. ALTER. Adding a new virtual stored column.
|
|
create table t1 (a int, b datetime);
|
|
insert into t1 values (1,'2008-09-04');
|
|
insert into t1 values (2,'2008-09-05');
|
|
select * from t1;
|
|
alter table t1 add column c int as (dayofyear(b)) persistent after a;
|
|
select * from t1;
|
|
show create table t1;
|
|
drop table t1;
|
|
|
|
--echo # Case 14. ALTER. Changing the expression of a virtual stored column.
|
|
create table t1 (a int, b datetime, c int as (week(b)) persistent);
|
|
insert into t1 values (1,'2008-09-04',default);
|
|
insert into t1 values (2,'2008-09-05',default);
|
|
select * from t1;
|
|
alter table t1 change column c c int as (week(b,1)) persistent;
|
|
select * from t1;
|
|
show create table t1;
|
|
drop table t1;
|
|
|
|
--echo # Case 15. ALTER. Changing the expression of a virtual non-stored column.
|
|
create table t1 (a int, b datetime, c int as (week(b)));
|
|
insert into t1 values (1,'2008-09-04',default);
|
|
insert into t1 values (2,'2008-09-05',default);
|
|
select * from t1;
|
|
alter table t1 change column c c int as (week(b,1));
|
|
select * from t1;
|
|
show create table t1;
|
|
drop table t1;
|
|
|