SET GLOBAL query_cache_size=1024*1024*8;
CREATE TABLE `test` (
`uniqueId` INT NOT NULL,
`partitionId` INT NOT NULL,
PRIMARY KEY (`uniqueId`,`partitionId`)
) ENGINE=InnoDB PARTITION BY LIST (partitionId) (
PARTITION p01 VALUES IN (1),
PARTITION p02 VALUES IN (2)
);
INSERT INTO `test`(`uniqueId`,`partitionId`) VALUES(407237055, 2);
SELECT * FROM `test`;
uniqueId	partitionId
407237055	2
#Confirms 1 row in partition 'p02'
SELECT TABLE_NAME, PARTITION_NAME, TABLE_ROWS FROM information_schema.PARTITIONS where TABLE_NAME = 'test';
TABLE_NAME	PARTITION_NAME	TABLE_ROWS
test	p01	0
test	p02	1
ALTER TABLE `test` TRUNCATE PARTITION `p02`;
#Confirms no more rows in partition 'p02'
SELECT TABLE_NAME, PARTITION_NAME, TABLE_ROWS FROM information_schema.PARTITIONS where TABLE_NAME = 'test';
TABLE_NAME	PARTITION_NAME	TABLE_ROWS
test	p01	0
test	p02	0
#Before the patch, this returned the previously existing values.
SELECT * FROM `test`;
uniqueId	partitionId
SELECT SQL_CACHE * FROM `test`;
uniqueId	partitionId
SELECT SQL_NO_CACHE * FROM `test`;
uniqueId	partitionId
DROP TABLE test;
SET GLOBAL query_cache_size=DEFAULT;
