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Bug#28573894 ALTER PARTITIONED TABLE ADD AUTO_INCREMENT DIFF RESULT DEPENDING ON ALGORITHM

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For partitioned table, ensure that the AUTO_INCREMENT values will
be assigned from the same sequence. This is based on the following
change in MySQL 5.6.44:

commit aaba359c13d9200747a609730dafafc3b63cd4d6
Author: Rahul Malik <rahul.m.malik@oracle.com>
Date:   Mon Feb 4 13:31:41 2019 +0530

    Bug#28573894 ALTER PARTITIONED TABLE ADD AUTO_INCREMENT DIFF RESULT DEPENDING ON ALGORITHM

    Problem:
    When a partition table is in-place altered to add an auto-increment column,
    then its values are starting over for each partition.

    Analysis:
    In the case of in-place alter, InnoDB is creating a new sequence object
    for each partition. It is default initialized. So auto-increment columns
    start over for each partition.

    Fix:
    Assign old sequence of the partition to the sequence of next partition
    so it won't start over.

    RB#21148
    Reviewed by Bin Su <bin.x.su@oracle.com>
This commit is contained in:
Marko Mäkelä
2019-04-25 14:04:44 +03:00
parent 9e7bcb05d4
commit 1cd31bc132
6 changed files with 113 additions and 7 deletions
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24
mysql-test/t/partition_innodb.test
View File

@ -1028,3 +1028,27 @@ SET GLOBAL innodb_stats_persistent= @save_isp;
DROP view v;
DROP TABLE t;
--echo #
--echo # Bug#28573894 ALTER PARTITIONED TABLE ADD AUTO_INCREMENT DIFF RESULT
--echo #
CREATE TABLE t (a VARCHAR(10) NOT NULL,b INT,PRIMARY KEY (b)) ENGINE=INNODB
PARTITION BY RANGE (b)
(PARTITION pa VALUES LESS THAN (2),
PARTITION pb VALUES LESS THAN (20),
PARTITION pc VALUES LESS THAN (30),
PARTITION pd VALUES LESS THAN (40));
INSERT INTO t
VALUES('A',0),('B',1),('C',2),('D',3),('E',4),('F',5),('G',25),('H',35);
CREATE TABLE t_copy LIKE t;
INSERT INTO t_copy SELECT * FROM t;
--enable_info
ALTER TABLE t ADD COLUMN r INT UNSIGNED NOT NULL AUTO_INCREMENT,
ADD UNIQUE KEY (r,b);
ALTER TABLE t_copy ADD COLUMN r INT UNSIGNED NOT NULL AUTO_INCREMENT,
ADD UNIQUE KEY (r,b), ALGORITHM=COPY;
--disable_info
SELECT * FROM t;
SELECT * FROM t_copy;
DROP TABLE t,t_copy;