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1e73d7d6c6
* Explicit STARTS syntax * SHOW CREATE * Default STARTS rounding depending on INTERVAL type * Warn when STARTS timestamp is later than query time * Fix uninitialized Lex->create_last_non_select_table under mysql_unpack_partition() Default STARTS rounding depending on INTERVAL type If STARTS clause is omitted, default one is assigned with value derived from query timestamp. The rounding is done on STARTS value depending on INTERVAL type: SECOND: no rounding is done; MINUTE: timestamp seconds is set to 0; HOUR: timestamp seconds and minutes are set to 0; DAY, WEEK, MONTH and YEAR: timestamp seconds, minutes and hours are set to 0 (the date of rotation is kept as current date).
310 lines
13 KiB
Plaintext
310 lines
13 KiB
Plaintext
set time_zone= "+00:00";
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call mtr.add_suppression("need more HISTORY partitions");
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set timestamp=unix_timestamp('2001-02-03 10:20:30');
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create or replace table t1 (i int) with system versioning
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partition by system_time interval 1 day
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subpartition by key (i) subpartitions 2
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(partition p1 history, partition pn current);
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set timestamp=unix_timestamp('2001-02-03 10:20:40');
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insert t1 values (1);
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delete from t1;
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set timestamp=unix_timestamp('2001-02-04 10:20:50');
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insert t1 values (2);
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Warnings:
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Warning 4114 Versioned table `test`.`t1`: last HISTORY partition (`p1`) is out of INTERVAL, need more HISTORY partitions
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delete from t1;
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Warnings:
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Warning 4114 Versioned table `test`.`t1`: last HISTORY partition (`p1`) is out of INTERVAL, need more HISTORY partitions
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select subpartition_name,partition_description,table_rows from information_schema.partitions where table_schema='test' and table_name='t1';
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subpartition_name partition_description table_rows
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p1sp0 2001-02-04 00:00:00 1
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p1sp1 2001-02-04 00:00:00 1
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pnsp0 CURRENT 0
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pnsp1 CURRENT 0
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set timestamp=unix_timestamp('2001-02-04 10:20:55');
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alter table t1 add partition (partition p0 history, partition p2 history);
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set timestamp=unix_timestamp('2001-02-04 10:30:00');
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insert t1 values (4),(5);
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set timestamp=unix_timestamp('2001-02-04 10:30:10');
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update t1 set i=6 where i=5;
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select subpartition_name,partition_description,table_rows from information_schema.partitions where table_schema='test' and table_name='t1';
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subpartition_name partition_description table_rows
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p1sp0 2001-02-04 00:00:00 1
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p1sp1 2001-02-04 00:00:00 0
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p0sp0 2001-02-05 00:00:00 1
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p0sp1 2001-02-05 00:00:00 1
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p2sp0 2001-02-06 00:00:00 0
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p2sp1 2001-02-06 00:00:00 0
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pnsp0 CURRENT 0
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pnsp1 CURRENT 2
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## pruning check
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set @ts=(select partition_description from information_schema.partitions
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where table_schema='test' and table_name='t1' and partition_name='p0' limit 1);
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select * from t1;
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i
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4
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6
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explain partitions select * from t1;
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id select_type table partitions type possible_keys key key_len ref rows Extra
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1 SIMPLE t1 pn_pnsp0,pn_pnsp1 ALL NULL NULL NULL NULL 2 Using where
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explain partitions select * from t1 for system_time as of '2001-02-04 10:20:30';
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id select_type table partitions type possible_keys key key_len ref rows Extra
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1 SIMPLE t1 p0_p0sp0,p0_p0sp1,p2_p2sp0,p2_p2sp1,pn_pnsp0,pn_pnsp1 ALL NULL NULL NULL NULL # Using where
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set @ts=(select row_end from t1 for system_time all where i=1);
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select * from t1 for system_time all where row_end = @ts;
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i
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1
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explain partitions select * from t1 for system_time all where row_end = @ts;
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id select_type table partitions type possible_keys key key_len ref rows Extra
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1 SIMPLE t1 p1_p1sp0,p1_p1sp1 # NULL NULL NULL NULL # #
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## INTERVAL ... STARTS
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create or replace table t1 (i int) with system versioning
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partition by system_time interval 1 day starts 'a'
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(partition p0 history, partition pn current);
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ERROR HY000: Wrong parameters for partitioned `t1`: wrong value for 'STARTS'
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create or replace table t1 (i int) with system versioning
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partition by system_time interval 1 day starts '00:00:00'
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(partition p0 history, partition pn current);
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ERROR HY000: Wrong parameters for partitioned `t1`: wrong value for 'STARTS'
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create or replace table t1 (i int) with system versioning
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partition by system_time interval 1 day starts '2000-00-01 00:00:00'
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(partition p0 history, partition pn current);
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ERROR HY000: Wrong parameters for partitioned `t1`: wrong value for 'STARTS'
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create or replace table t1 (i int) with system versioning
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partition by system_time interval 1 day starts 946684800
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(partition p0 history, partition pn current);
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ERROR HY000: Wrong parameters for partitioned `t1`: wrong value for 'STARTS'
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create or replace table t1 (i int) with system versioning
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partition by system_time interval 1 day starts '2000-01-01 00:00:00'
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(partition p0 history, partition pn current);
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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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`i` int(11) DEFAULT NULL
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) ENGINE=MyISAM DEFAULT CHARSET=latin1 WITH SYSTEM VERSIONING
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PARTITION BY SYSTEM_TIME INTERVAL 1 DAY STARTS TIMESTAMP'2000-01-01 00:00:00'
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(PARTITION `p0` HISTORY ENGINE = MyISAM,
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PARTITION `pn` CURRENT ENGINE = MyISAM)
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# Test STARTS warning
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set timestamp= unix_timestamp('2000-01-01 00:00:00');
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create or replace table t1 (i int) with system versioning
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partition by system_time interval 1 day
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(partition p0 history, partition pn current);
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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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`i` int(11) DEFAULT NULL
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) ENGINE=MyISAM DEFAULT CHARSET=latin1 WITH SYSTEM VERSIONING
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PARTITION BY SYSTEM_TIME INTERVAL 1 DAY STARTS TIMESTAMP'2000-01-01 00:00:00'
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(PARTITION `p0` HISTORY ENGINE = MyISAM,
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PARTITION `pn` CURRENT ENGINE = MyISAM)
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create or replace table t1 (i int) with system versioning
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partition by system_time interval 1 day starts '2000-01-01 00:00:01'
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(partition p0 history, partition pn current);
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Warnings:
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Warning 4164 `t1`: STARTS is later than query time, first history partition may exceed INTERVAL value
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# Test default STARTS rounding
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set timestamp= unix_timestamp('1999-12-15 13:33:33');
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create or replace table t1 (i int) with system versioning
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partition by system_time interval 1 second
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(partition p0 history, partition pn current);
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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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`i` int(11) DEFAULT NULL
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) ENGINE=MyISAM DEFAULT CHARSET=latin1 WITH SYSTEM VERSIONING
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PARTITION BY SYSTEM_TIME INTERVAL 1 SECOND STARTS TIMESTAMP'1999-12-15 13:33:33'
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(PARTITION `p0` HISTORY ENGINE = MyISAM,
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PARTITION `pn` CURRENT ENGINE = MyISAM)
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create or replace table t1 (i int) with system versioning
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partition by system_time interval 1 minute
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(partition p0 history, partition pn current);
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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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`i` int(11) DEFAULT NULL
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) ENGINE=MyISAM DEFAULT CHARSET=latin1 WITH SYSTEM VERSIONING
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PARTITION BY SYSTEM_TIME INTERVAL 1 MINUTE STARTS TIMESTAMP'1999-12-15 13:33:00'
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(PARTITION `p0` HISTORY ENGINE = MyISAM,
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PARTITION `pn` CURRENT ENGINE = MyISAM)
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create or replace table t1 (i int) with system versioning
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partition by system_time interval 1 hour
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(partition p0 history, partition pn current);
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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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`i` int(11) DEFAULT NULL
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) ENGINE=MyISAM DEFAULT CHARSET=latin1 WITH SYSTEM VERSIONING
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PARTITION BY SYSTEM_TIME INTERVAL 1 HOUR STARTS TIMESTAMP'1999-12-15 13:00:00'
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(PARTITION `p0` HISTORY ENGINE = MyISAM,
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PARTITION `pn` CURRENT ENGINE = MyISAM)
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create or replace table t1 (i int) with system versioning
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partition by system_time interval 1 day
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(partition p0 history, partition pn current);
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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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`i` int(11) DEFAULT NULL
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) ENGINE=MyISAM DEFAULT CHARSET=latin1 WITH SYSTEM VERSIONING
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PARTITION BY SYSTEM_TIME INTERVAL 1 DAY STARTS TIMESTAMP'1999-12-15 00:00:00'
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(PARTITION `p0` HISTORY ENGINE = MyISAM,
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PARTITION `pn` CURRENT ENGINE = MyISAM)
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create or replace table t1 (i int) with system versioning
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partition by system_time interval 1 month
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(partition p0 history, partition pn current);
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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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`i` int(11) DEFAULT NULL
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) ENGINE=MyISAM DEFAULT CHARSET=latin1 WITH SYSTEM VERSIONING
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PARTITION BY SYSTEM_TIME INTERVAL 1 MONTH STARTS TIMESTAMP'1999-12-15 00:00:00'
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(PARTITION `p0` HISTORY ENGINE = MyISAM,
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PARTITION `pn` CURRENT ENGINE = MyISAM)
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create or replace table t1 (i int) with system versioning
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partition by system_time interval 1 year
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(partition p0 history, partition pn current);
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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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`i` int(11) DEFAULT NULL
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) ENGINE=MyISAM DEFAULT CHARSET=latin1 WITH SYSTEM VERSIONING
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PARTITION BY SYSTEM_TIME INTERVAL 1 YEAR STARTS TIMESTAMP'1999-12-15 00:00:00'
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(PARTITION `p0` HISTORY ENGINE = MyISAM,
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PARTITION `pn` CURRENT ENGINE = MyISAM)
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# seconds equivalent of 1 day does not round:
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create or replace table t1 (i int) with system versioning
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partition by system_time interval 86400 second
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(partition p0 history, partition pn current);
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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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`i` int(11) DEFAULT NULL
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) ENGINE=MyISAM DEFAULT CHARSET=latin1 WITH SYSTEM VERSIONING
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PARTITION BY SYSTEM_TIME INTERVAL 86400 SECOND STARTS TIMESTAMP'1999-12-15 13:33:33'
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(PARTITION `p0` HISTORY ENGINE = MyISAM,
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PARTITION `pn` CURRENT ENGINE = MyISAM)
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# STARTS value is in local time_zone:
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set time_zone="+03:00";
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create or replace table t1 (i int) with system versioning
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partition by system_time interval 1 day starts '2000-01-01 00:00:00'
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(partition p0 history, partition pn current);
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Warnings:
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Warning 4164 `t1`: STARTS is later than query time, first history partition may exceed INTERVAL value
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set timestamp= unix_timestamp('2000-01-01 00:00:00');
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create or replace table t2 (i int) with system versioning
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partition by system_time interval 1 day
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(partition p0 history, partition pn current);
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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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`i` int(11) DEFAULT NULL
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) ENGINE=MyISAM DEFAULT CHARSET=latin1 WITH SYSTEM VERSIONING
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PARTITION BY SYSTEM_TIME INTERVAL 1 DAY STARTS TIMESTAMP'2000-01-01 00:00:00'
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(PARTITION `p0` HISTORY ENGINE = MyISAM,
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PARTITION `pn` CURRENT ENGINE = MyISAM)
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show create table t2;
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Table Create Table
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t2 CREATE TABLE `t2` (
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`i` int(11) DEFAULT NULL
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) ENGINE=MyISAM DEFAULT CHARSET=latin1 WITH SYSTEM VERSIONING
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PARTITION BY SYSTEM_TIME INTERVAL 1 DAY STARTS TIMESTAMP'2000-01-01 00:00:00'
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(PARTITION `p0` HISTORY ENGINE = MyISAM,
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PARTITION `pn` CURRENT ENGINE = MyISAM)
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set time_zone="+00:00";
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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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`i` int(11) DEFAULT NULL
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) ENGINE=MyISAM DEFAULT CHARSET=latin1 WITH SYSTEM VERSIONING
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PARTITION BY SYSTEM_TIME INTERVAL 1 DAY STARTS TIMESTAMP'1999-12-31 21:00:00'
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(PARTITION `p0` HISTORY ENGINE = MyISAM,
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PARTITION `pn` CURRENT ENGINE = MyISAM)
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show create table t2;
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Table Create Table
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t2 CREATE TABLE `t2` (
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`i` int(11) DEFAULT NULL
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) ENGINE=MyISAM DEFAULT CHARSET=latin1 WITH SYSTEM VERSIONING
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PARTITION BY SYSTEM_TIME INTERVAL 1 DAY STARTS TIMESTAMP'1999-12-31 21:00:00'
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(PARTITION `p0` HISTORY ENGINE = MyISAM,
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PARTITION `pn` CURRENT ENGINE = MyISAM)
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# Test rotation
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set timestamp= unix_timestamp('2001-01-01 00:00:00');
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# it's ok to add partitions for past:
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create or replace table t1 (i int) with system versioning
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partition by system_time interval 1 day starts '2000-01-01 00:00:00'
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(partition p0 history, partition p1 history, partition pn current);
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# we are warned when we push to present:
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insert into t1 values (0);
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Warnings:
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Warning 4114 Versioned table `test`.`t1`: last HISTORY partition (`p1`) is out of INTERVAL, need more HISTORY partitions
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set timestamp= unix_timestamp('2001-01-01 00:00:01');
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update t1 set i= i + 1;
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Warnings:
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Warning 4114 Versioned table `test`.`t1`: last HISTORY partition (`p1`) is out of INTERVAL, need more HISTORY partitions
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set timestamp= unix_timestamp('2001-01-01 00:00:02');
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update t1 set i= i + 1;
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Warnings:
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Warning 4114 Versioned table `test`.`t1`: last HISTORY partition (`p1`) is out of INTERVAL, need more HISTORY partitions
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select *, row_end from t1 partition (p0);
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i row_end
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select *, row_end from t1 partition (p1);
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i row_end
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0 2001-01-01 00:00:01.000000
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1 2001-01-01 00:00:02.000000
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set timestamp= unix_timestamp('2000-01-01 00:00:00');
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# now we "overflow" first partition a bit:
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create or replace table t1 (i int) with system versioning
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partition by system_time interval 1 day starts '2000-01-03 00:00:00'
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(partition p0 history, partition p1 history, partition pn current);
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Warnings:
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Warning 4164 `t1`: STARTS is later than query time, first history partition may exceed INTERVAL value
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insert into t1 values (0);
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set timestamp= unix_timestamp('2000-01-01 00:00:01');
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update t1 set i= i + 1;
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set timestamp= unix_timestamp('2000-01-02 00:00:01');
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update t1 set i= i + 1;
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set timestamp= unix_timestamp('2000-01-03 00:00:01');
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update t1 set i= i + 1;
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set timestamp= unix_timestamp('2000-01-04 00:00:01');
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update t1 set i= i + 1;
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select *, row_end from t1 partition (p0);
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i row_end
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0 2000-01-01 00:00:01.000000
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1 2000-01-02 00:00:01.000000
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2 2000-01-03 00:00:01.000000
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select *, row_end from t1 partition (p1);
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i row_end
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3 2000-01-04 00:00:01.000000
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set timestamp= unix_timestamp('2000-01-01 00:00:00');
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# and this is how it usually goes:
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create or replace table t1 (i int) with system versioning
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partition by system_time interval 1 day
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(partition p0 history, partition p1 history, partition pn current);
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insert into t1 values (0);
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set timestamp= unix_timestamp('2000-01-01 00:00:01');
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update t1 set i= i + 1;
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set timestamp= unix_timestamp('2000-01-02 00:00:01');
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update t1 set i= i + 1;
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set timestamp= unix_timestamp('2000-01-03 00:00:01');
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update t1 set i= i + 1;
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Warnings:
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Warning 4114 Versioned table `test`.`t1`: last HISTORY partition (`p1`) is out of INTERVAL, need more HISTORY partitions
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set timestamp= unix_timestamp('2000-01-04 00:00:01');
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update t1 set i= i + 1;
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Warnings:
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Warning 4114 Versioned table `test`.`t1`: last HISTORY partition (`p1`) is out of INTERVAL, need more HISTORY partitions
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alter table t1 add partition (partition p2 history, partition p3 history);
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select *, row_end from t1 partition (p0);
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i row_end
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0 2000-01-01 00:00:01.000000
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select *, row_end from t1 partition (p1);
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i row_end
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1 2000-01-02 00:00:01.000000
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select *, row_end from t1 partition (p2);
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i row_end
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2 2000-01-03 00:00:01.000000
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select *, row_end from t1 partition (p3);
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i row_end
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3 2000-01-04 00:00:01.000000
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drop tables t1, t2;
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