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Code Activity

MDEV-22166 CONVERT PARTITION: move out partition into a table

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Syntax for CONVERT keyword

ALTER TABLE tbl_name
    [alter_option [, alter_option] ...] |
    [partition_options]

partition_option: {
    ...
    | CONVERT PARTITION partition_name TO TABLE tbl_name
}

Examples:

    ALTER TABLE t1 CONVERT PARTITION p2 TO TABLE tp2;

New ALTER_PARTITION_CONVERT_OUT command for
fast_alter_partition_table() is done in alter_partition_convert_out()
function which basically does ha_rename_table().

Partition to extract is marked with the same flag as dropped
partition: PART_TO_BE_DROPPED. Note that we cannot have multiple
partitioning commands in one ALTER.

For DDL logging basically the principle is the same as for other
fast_alter_partition_table() commands. The only difference is that it
integrates late Atomic DDL functions and introduces additional phase
of WFRM_BACKUP_ORIGINAL. That is required for binlog consistency
because otherwise we could not revert back after WFRM_INSTALL_SHADOW
is done. And before DDL log is complete if we crash or fail the
altered table will be already new but binlog will miss that ALTER
command. Note that this is different from all other atomic DDL in that
it rolls back until the ddl_log_complete() is done even if everything
was done fully before the crash.

Test cases added to:

  parts.alter_table \
  parts.partition_debug \
  versioning.partition \
  atomic.alter_partition
This commit is contained in:
Aleksey Midenkov
2021-09-09 11:58:46 +03:00
committed by Sergei Golubchik
parent f6b0e34c38
commit b7bba721ee
29 changed files with 4279 additions and 71 deletions
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85
mysql-test/suite/versioning/r/partition,heap.rdiff Normal file
View File

@@ -0,0 +1,85 @@
--- partition.result
+++ partition,heap.reject
@@ -1545,82 +1545,3 @@
(PARTITION `p0` HISTORY ENGINE = X,
PARTITION `pn` CURRENT ENGINE = X)
drop tables t1, tp1;
-# Complex table
-create or replace table t1 (
-x int primary key auto_increment,
-t timestamp(6) default '2001-11-11 11:11:11',
-b blob(4096) compressed null,
-c varchar(1033) character set utf8 not null,
-u int,
-unique key (x, u),
-m enum('a', 'b', 'c') not null default 'a' comment 'absolute',
-i1 tinyint, i2 smallint, i3 bigint,
-index three(i1, i2, i3),
-v1 timestamp(6) generated always as (t + interval 1 day),
-v2 timestamp(6) generated always as (t + interval 1 month) stored,
-s timestamp(6) as row start,
-e timestamp(6) as row end,
-period for system_time (s, e),
-ps date, pe date,
-period for app_time (ps, pe),
-constraint check_constr check (u > -1))
-with system versioning default charset=ucs2
-partition by range(x) (
-partition p0 values less than (10),
-partition p1 values less than (20),
-partition pn values less than maxvalue);
-alter table t1 convert partition p1 to table tp1;
-show create table tp1;
-Table Create Table
-tp1 CREATE TABLE `tp1` (
- `x` int(11) NOT NULL AUTO_INCREMENT,
- `t` timestamp(6) NOT NULL DEFAULT '2001-11-11 11:11:11.000000',
- `b` blob /*!100301 COMPRESSED*/ DEFAULT NULL,
- `c` varchar(1033) CHARACTER SET utf8mb3 NOT NULL,
- `u` int(11) DEFAULT NULL,
- `m` enum('a','b','c') NOT NULL DEFAULT 'a' COMMENT 'absolute',
- `i1` tinyint(4) DEFAULT NULL,
- `i2` smallint(6) DEFAULT NULL,
- `i3` bigint(20) DEFAULT NULL,
- `v1` timestamp(6) GENERATED ALWAYS AS (`t` + interval 1 day) VIRTUAL,
- `v2` timestamp(6) GENERATED ALWAYS AS (`t` + interval 1 month) STORED,
- `s` timestamp(6) GENERATED ALWAYS AS ROW START,
- `e` timestamp(6) GENERATED ALWAYS AS ROW END,
- `ps` date NOT NULL,
- `pe` date NOT NULL,
- PERIOD FOR `app_time` (`ps`, `pe`),
- PRIMARY KEY (`x`,`e`),
- UNIQUE KEY `x` (`x`,`u`,`e`),
- KEY `three` (`i1`,`i2`,`i3`),
- PERIOD FOR SYSTEM_TIME (`s`, `e`),
- CONSTRAINT `check_constr` CHECK (`u` > -1)
-) ENGINE=X DEFAULT CHARSET=ucs2 WITH SYSTEM VERSIONING
-show create table t1;
-Table Create Table
-t1 CREATE TABLE `t1` (
- `x` int(11) NOT NULL AUTO_INCREMENT,
- `t` timestamp(6) NOT NULL DEFAULT '2001-11-11 11:11:11.000000',
- `b` blob /*!100301 COMPRESSED*/ DEFAULT NULL,
- `c` varchar(1033) CHARACTER SET utf8mb3 NOT NULL,
- `u` int(11) DEFAULT NULL,
- `m` enum('a','b','c') NOT NULL DEFAULT 'a' COMMENT 'absolute',
- `i1` tinyint(4) DEFAULT NULL,
- `i2` smallint(6) DEFAULT NULL,
- `i3` bigint(20) DEFAULT NULL,
- `v1` timestamp(6) GENERATED ALWAYS AS (`t` + interval 1 day) VIRTUAL,
- `v2` timestamp(6) GENERATED ALWAYS AS (`t` + interval 1 month) STORED,
- `s` timestamp(6) GENERATED ALWAYS AS ROW START,
- `e` timestamp(6) GENERATED ALWAYS AS ROW END,
- `ps` date NOT NULL,
- `pe` date NOT NULL,
- PERIOD FOR `app_time` (`ps`, `pe`),
- PRIMARY KEY (`x`,`e`),
- UNIQUE KEY `x` (`x`,`u`,`e`),
- KEY `three` (`i1`,`i2`,`i3`),
- PERIOD FOR SYSTEM_TIME (`s`, `e`),
- CONSTRAINT `check_constr` CHECK (`u` > -1)
-) ENGINE=X DEFAULT CHARSET=ucs2 WITH SYSTEM VERSIONING
- PARTITION BY RANGE (`x`)
-(PARTITION `p0` VALUES LESS THAN (10) ENGINE = X,
- PARTITION `pn` VALUES LESS THAN MAXVALUE ENGINE = X)
-drop tables t1, tp1;