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e851c140f4
* one `AS OF NOW`, multiple `VERSIONING` partitions; * rotation of `VERSIONING` partitions by record count, time period; * rotation is multi-threaded; * conventional subpartitions as bottom level for versioned partitions; * `DEFAULT` keyword selects first `VERSIONING` partition; * ALTER TABLE ADD/DROP partition; * REBUILD PARTITION basic operation.
238 lines
6.0 KiB
Plaintext
238 lines
6.0 KiB
Plaintext
create table t1 (x int)
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with system versioning
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engine innodb
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partition by range columns (x) (
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partition p0 values less than (100),
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partition p1 values less than (1000));
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insert into t1 values (3), (300);
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select * from t1;
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x
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3
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300
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select * from t1 partition (p0);
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x
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3
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select * from t1 partition (p1);
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x
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300
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delete from t1;
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select * from t1;
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x
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select * from t1 for system_time all;
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x
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3
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300
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select * from t1 partition (p0) for system_time all;
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x
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3
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select * from t1 partition (p1) for system_time all;
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x
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300
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create or replace table t1 (x int)
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partition by system_time (
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partition p0 as of now,
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partition p1 versioning);
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ERROR HY000: System Versioning required: `BY SYSTEM_TIME` partitioning
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create or replace table t1 (x int);
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alter table t1
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partition by system_time (
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partition p0 as of now,
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partition p1 versioning);
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ERROR HY000: System Versioning required: `BY SYSTEM_TIME` partitioning
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create or replace table t1 (x int)
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with system versioning
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partition by system_time (
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partition p0 as of now);
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ERROR HY000: Wrong parameters for `BY SYSTEM_TIME`: unexpected number of partitions (expected > 1)
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create or replace table t1 (x int)
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with system versioning
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partition by system_time (
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partition p0 as of now,
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partition p1 as of now);
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ERROR HY000: Wrong parameters for `BY SYSTEM_TIME`: multiple `AS OF NOW` partitions
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create or replace table t1 (x int)
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with system versioning
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partition by system_time (
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partition p0 versioning,
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partition p1 versioning);
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ERROR HY000: Wrong parameters for `BY SYSTEM_TIME`: no `AS OF NOW` partition defined
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create or replace table t1 (x int)
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with system versioning
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partition by system_time (
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partition p0 as of now,
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partition p1 versioning);
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alter table t1 add partition (
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partition p2 as of now);
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ERROR HY000: Wrong parameters for `BY SYSTEM_TIME`: multiple `AS OF NOW` partitions
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alter table t1 add partition (
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partition p2 versioning default);
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Warnings:
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Warning 4078 Maybe missing parameters: no rotation condition for multiple `VERSIONING` partitions.
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alter table t1 drop partition p0;
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ERROR HY000: Wrong parameters for `BY SYSTEM_TIME`: `AS OF NOW` partition can not be dropped
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alter table t1 drop partition p2;
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alter table t1 drop partition p1;
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ERROR HY000: Wrong parameters for `BY SYSTEM_TIME`: one `AS OF NOW` and at least one `VERSIONING` partition required
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insert into t1 values (1);
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select * from t1;
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x
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1
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select * from t1 partition (p0);
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x
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1
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select * from t1 partition (p1);
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x
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delete from t1;
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select * from t1 partition (p0) for system_time all;
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x
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select * from t1 partition (p1) for system_time all;
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x
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1
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create or replace table t1 (x int)
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with system versioning
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partition by system_time (
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partition p0 versioning,
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partition p1 as of now);
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insert into t1 values (1);
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select * from t1;
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x
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1
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select * from t1 partition (p0);
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x
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select * from t1 partition (p1);
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x
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1
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delete from t1;
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select * from t1 partition (p0) for system_time all;
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x
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1
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select * from t1 partition (p1) for system_time all;
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x
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create or replace table t1 (x int)
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with system versioning
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engine myisam
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partition by system_time limit 1 (
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partition p0 as of now,
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partition p1 versioning,
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partition p2 versioning);
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Warnings:
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Warning 4078 No `DEFAULT` for `VERSIONING` partitions. Setting `p1` as default.
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insert into t1 values (1), (2);
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select * from t1 partition (p0);
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x
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1
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2
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delete from t1;
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Warnings:
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Note 4079 Switching from partition `p1` to `p2`
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select * from t1 partition (p1) for system_time all;
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x
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1
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select * from t1 partition (p2) for system_time all;
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x
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2
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insert into t1 values (3);
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delete from t1;
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Warnings:
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Warning 4077 Using full partition `p2`, need more VERSIONING partitions!
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select * from t1 partition (p2) for system_time all;
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x
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2
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3
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create or replace table t1 (x int)
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with system versioning
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engine myisam
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partition by system_time interval 1 second (
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partition p0 as of now,
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partition p1 versioning default,
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partition p2 versioning);
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insert into t1 values (1), (2), (3);
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select * from t1 partition (p0);
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x
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1
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2
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3
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delete from t1;
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select * from t1 partition (p1) for system_time all;
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x
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1
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2
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3
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insert into t1 values (4);
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delete from t1;
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Warnings:
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Note 4079 Switching from partition `p1` to `p2`
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select * from t1 partition (p2) for system_time all;
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x
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4
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create or replace table t1 (x int)
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with system versioning
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engine myisam
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partition by system_time limit 1 (
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partition p0 as of now,
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partition p1 versioning default,
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partition p2 versioning default);
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ERROR HY000: Wrong parameters for `BY SYSTEM_TIME`: multiple `DEFAULT` partitions
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create or replace table t1 (x int)
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with system versioning
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engine myisam
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partition by system_time limit 1 (
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partition p0 as of now,
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partition p1 versioning,
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partition p2 versioning default);
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show create table t1;
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Table Create Table
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t1 CREATE TABLE `t1` (
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`x` int(11) DEFAULT NULL,
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`sys_trx_start` timestamp(6) GENERATED ALWAYS AS ROW START,
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`sys_trx_end` timestamp(6) GENERATED ALWAYS AS ROW END,
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PERIOD FOR SYSTEM_TIME (`sys_trx_start`, `sys_trx_end`)
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) ENGINE=MyISAM DEFAULT CHARSET=latin1 WITH SYSTEM VERSIONING
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PARTITION BY SYSTEM_TIME LIMIT 1
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(PARTITION p0 AS OF NOW ENGINE = MyISAM,
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PARTITION p1 VERSIONING ENGINE = MyISAM,
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PARTITION p2 VERSIONING DEFAULT ENGINE = MyISAM)
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insert into t1 values (4), (5);
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delete from t1;
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Warnings:
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Note 4079 Switching from partition `p2` to `p1`
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select * from t1 partition (p2) for system_time all;
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x
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4
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select * from t1 partition (p1) for system_time all;
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x
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5
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create or replace table t1 (x int)
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with system versioning
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engine myisam
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partition by system_time limit 1
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subpartition by key (x)
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subpartitions 2 (
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partition p0 as of now,
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partition p1 versioning default,
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partition p2 versioning);
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insert into t1 (x) values (1), (2), (3);
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select * from t1 partition (p0sp0);
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x
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1
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3
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select * from t1 partition (p0sp1);
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x
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2
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delete from t1;
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Warnings:
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Note 4079 Switching from partition `p1` to `p2`
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Warning 4077 Using full partition `p2`, need more VERSIONING partitions!
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select * from t1 partition (p1sp0) for system_time all;
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x
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1
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select * from t1 partition (p1sp1) for system_time all;
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x
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select * from t1 partition (p2sp0) for system_time all;
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x
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3
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select * from t1 partition (p2sp1) for system_time all;
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x
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2
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drop table t1;
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