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139 lines
5 KiB
PHP
139 lines
5 KiB
PHP
################################################################################
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# inc/vcol_partition.inc #
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# #
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# Purpose: #
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# Testing partitioning tables with virtual columns. #
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# #
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# #
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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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--source include/have_partition.inc
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--disable_warnings
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drop table if exists t1;
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--enable_warnings
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--echo # Case 1. Partitioning by RANGE based on a non-stored virtual column.
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CREATE TABLE t1 (
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a DATE NOT NULL,
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b int as (year(a))
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)
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PARTITION BY RANGE( b ) (
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PARTITION p0 VALUES LESS THAN (2006),
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PARTITION p2 VALUES LESS THAN (2008)
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);
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insert into t1 values ('2006-01-01',default);
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insert into t1 values ('2007-01-01',default);
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insert into t1 values ('2005-01-01',default);
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insert into t1 (a) values ('2007-01-02');
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select * from t1;
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select partition_name,table_rows,data_length from information_schema.partitions where table_name = 't1';
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--echo # Modify the expression of virtual column b
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ALTER TABLE t1 modify b int as (year(a)-1);
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select * from t1;
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select partition_name,table_rows,data_length from information_schema.partitions where table_name = 't1';
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drop table t1;
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--echo # Case 2. Partitioning by LIST based on a stored virtual column.
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CREATE TABLE t1 (a int, b int as (a % 3 ) persistent)
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PARTITION BY LIST (a+1)
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(PARTITION p1 VALUES IN (1), PARTITION p2 VALUES IN (2));
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insert into t1 values (1,default);
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select partition_name,table_rows,data_length from information_schema.partitions where table_name = 't1';
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select * from t1;
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#
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# NOTE: The following tests are currently failing due to a
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# [suspected] bug in the existing partition functionality.
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# Here is what was observed when using mysqld compiled prior
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# to adding the virtual column functionality.
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# mysql> create table t1 (a int) partition by list (a)
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# (partition p1 values in (1), partition p2 values in (2));
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# Query OK, 0 rows affected (0.00 sec)
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#
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# mysql> insert into t1 values (1), (1), (2);
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# Query OK, 3 rows affected (0.00 sec)
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# Records: 3 Duplicates: 0 Warnings: 0
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#
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# mysql> select * from t1;
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# +------+
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# | a |
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# +------+
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# | 1 |
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# | 1 |
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# | 2 |
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# +------+
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# 3 rows in set (0.00 sec)
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#
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# mysql> alter table t1 reorganize partition p1 into
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# (partition p1 values in (3));
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# Query OK, 2 rows affected (3.90 sec)
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# Records: 2 Duplicates: 2 Warnings: 0
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#
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# mysql> select * from t1;
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# +------+
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# | a |
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# +------+
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# | 2 | <- Two row have been lost!!!
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# +------+
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# 1 row in set (0.00 sec)
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#
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#alter table t1 change b b int as ((a % 3)+1) persistent;
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#--error ER_NO_PARTITION_FOR_GIVEN_VALUE
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#alter table t1 change b b int as (a % 2) persistent;
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#select partition_name,table_rows,data_length from information_schema.partitions where table_name = 't1';
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select * from t1;
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drop table t1;
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--echo # Case 3. Partitioning by HASH based on a non-stored virtual column.
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CREATE TABLE t1 (
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a DATE NOT NULL,
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b int as (year(a))
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)
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PARTITION BY HASH( b % 3 ) PARTITIONS 3;
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insert into t1 values ('2005-01-01',default);
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insert into t1 values ('2006-01-01',default);
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select * from t1;
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select partition_name,table_rows,data_length from information_schema.partitions where table_name = 't1';
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--echo # Modify the expression of virtual column b
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ALTER TABLE t1 modify b int as (year(a)-1);
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select * from t1;
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select partition_name,table_rows,data_length from information_schema.partitions where table_name = 't1';
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drop table t1;
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#
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# Restrictions when partitioned
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#
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--error ER_WRONG_EXPR_IN_PARTITION_FUNC_ERROR
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create table t1 (a int, b datetime as (now())) partition by hash(b+1) partitions 3;
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--error ER_WRONG_EXPR_IN_PARTITION_FUNC_ERROR
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create table t1 (a int, b varchar(100) as (user())) partition by hash(b+1) partitions 3;
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--error ER_WRONG_EXPR_IN_PARTITION_FUNC_ERROR
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create table t1 (a int, b double as (rand())) partition by hash(b+1) partitions 3;
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