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175 lines
5.8 KiB
PHP
175 lines
5.8 KiB
PHP
################################################################################
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# inc/vcol_non_stored_columns.inc #
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# #
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# Purpose: #
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# Ensure that MySQL behaviour is consistent irrelevant of #
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# - the place of a non-stored column among other columns, #
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# - the total number of non-stored fields. #
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# #
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#------------------------------------------------------------------------------#
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# Original Author: Andrey Zhakov #
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# Original Date: 2008-09-04 #
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# Change Author: Oleksandr Byelkin (Monty program Ab)
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# Date: 2009-03-24
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# Change: Syntax changed
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################################################################################
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--echo # Case 1. All non-stored columns.
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--echo # This scenario is currently impossible due to the fact that virtual columns
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--echo # with a constant expression are not allowed.
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--echo # Case 2. CREATE
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--echo # - Column1: "real"
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--echo # - Column 2: virtual non-stored
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create table t1 (a int, b int as (-a));
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insert into t1 values (1,default);
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select * from t1;
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insert into t1 values (2,default);
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select * from t1;
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drop table t1;
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--echo # Case 3. CREATE
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--echo # - Column1: "real"
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--echo # - Column 2: virtual stored
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create table t1 (a int, b int as (-a) persistent);
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insert into t1 values (1,default);
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select * from t1;
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insert into t1 values (2,default);
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select * from t1;
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drop table t1;
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--echo # Case 4. CREATE
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--echo # - Column1: virtual non-stored
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--echo # - Column2: "real"
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create table t1 (a int as (-b), b int);
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insert into t1 values (default,1);
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select * from t1;
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insert into t1 values (default,2);
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select * from t1;
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drop table t1;
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--echo # Case 5. CREATE
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--echo # - Column1: virtual stored
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--echo # - Column2: "real"
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create table t1 (a int as (-b) persistent, b int);
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insert into t1 values (default,1);
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select * from t1;
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insert into t1 values (default,2);
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select * from t1;
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drop table t1;
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--echo # Case 6. CREATE
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--echo # - Column1: "real"
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--echo # - Column2: virtual non-stored
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--echo # - Column3: virtual stored
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create table t1 (a int, b int as (-a), c int as (-a) persistent);
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insert into t1 values (1,default,default);
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select * from t1;
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insert into t1 values (2,default,default);
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select * from t1;
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drop table t1;
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--echo # Case 7. ALTER. Modify virtual stored -> virtual non-stored
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create table t1 (a int, b int as (a % 2) persistent);
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--error ER_UNSUPPORTED_ACTION_ON_GENERATED_COLUMN
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alter table t1 modify b int as (a % 2);
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show create table t1;
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drop table t1;
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--echo # Case 8. ALTER. Modify virtual non-stored -> virtual stored
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create table t1 (a int, b int as (a % 2));
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--error ER_UNSUPPORTED_ACTION_ON_GENERATED_COLUMN
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alter table t1 modify b int as (a % 2) persistent;
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show create table t1;
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drop table t1;
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--echo # Case 9. CREATE LIKE
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--echo # - Column1: "real"
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--echo # - Column2: virtual non-stored
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--echo # - Column3: virtual stored
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create table t1 (a int, b int as (-a), c int as (-a) persistent);
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create table t2 like t1;
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insert into t2 values (1,default,default);
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select * from t2;
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insert into t2 values (2,default,default);
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select * from t2;
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drop table t2;
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drop table t1;
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--echo # Case 10. ALTER. Dropping a virtual non-stored column.
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--echo # - Column1: virtual non-stored
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--echo # - Column2: "real"
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create table t1 (a int as (-b), b int, c varchar(5));
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insert into t1 values (default,1,'v1');
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insert into t1 values (default,2,'v2');
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select * from t1;
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alter table t1 drop column a;
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select * from t1;
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show create table t1;
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drop table t1;
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--echo # Case 11. ALTER. Dropping a virtual stored column.
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--echo # - Column1: virtual stored
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--echo # - Column2: "real"
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create table t1 (a int as (-b) persistent, b int, c char(5));
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insert into t1 values (default,1,'v1');
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insert into t1 values (default,2,'v2');
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select * from t1;
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alter table t1 drop column a;
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select * from t1;
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show create table t1;
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drop table t1;
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--echo # Case 12. ALTER. Adding a new virtual non-stored column.
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create table t1 (a int, b datetime);
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insert into t1 values (1,'2008-09-04');
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insert into t1 values (2,'2008-09-05');
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select * from t1;
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alter table t1 add column c int as (dayofyear(b)) after a;
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select * from t1;
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show create table t1;
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drop table t1;
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--echo # Case 13. ALTER. Adding a new virtual stored column.
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create table t1 (a int, b datetime);
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insert into t1 values (1,'2008-09-04');
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insert into t1 values (2,'2008-09-05');
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select * from t1;
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alter table t1 add column c int as (dayofyear(b)) persistent after a;
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select * from t1;
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show create table t1;
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drop table t1;
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--echo # Case 14. ALTER. Changing the expression of a virtual stored column.
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create table t1 (a int, b datetime, c int as (week(b,0)) persistent);
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insert into t1 values (1,'2008-09-04',default);
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insert into t1 values (2,'2008-09-05',default);
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select * from t1;
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alter table t1 change column c c int as (week(b,1)) persistent;
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select * from t1;
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show create table t1;
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drop table t1;
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--echo # Case 15. ALTER. Changing the expression of a virtual non-stored column.
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create table t1 (a int, b datetime, c int as (week(b,0)));
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insert into t1 values (1,'2008-09-04',default);
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insert into t1 values (2,'2008-09-05',default);
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select * from t1;
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alter table t1 change column c c int as (week(b,1));
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select * from t1;
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show create table t1;
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drop table t1;
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--echo #
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--echo # MDEV-6103 - Adding/removing non-materialized virtual column triggers
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--echo # table recreation
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--echo #
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CREATE TABLE t1(a INT);
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INSERT INTO t1 VALUES(1),(1),(1),(1),(1),(1),(1),(1),(1),(1);
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enable_info;
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ALTER TABLE t1 ADD COLUMN b INT AS (a + 1) VIRTUAL;
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ALTER TABLE t1 DROP COLUMN b;
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disable_info;
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CHECK TABLE t1;
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DROP TABLE t1;
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