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set @save_query_cache_size=@@query_cache_size;
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=@save_query_cache_size;
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