MySQL通过存储过程来添加和删除分区的过程(List分区)

DROP TABLE  IF  EXISTS `list_part_table` ;
CREATE TABLE  IF  NOT  EXISTS `list_part_table`  (
`id` bigint(32) NOT NULL COMMENT '主键',
`request_time` datetime(0) NOT NULL COMMENT '请求时间',
`response_time` datetime(0) NOT NULL COMMENT '响应时间',
`time_used` int(11) NOT NULL COMMENT '耗时(ms)',
`create_by` varchar(48)  DEFAULT NULL COMMENT '创建人',
`update_by` varchar(48)  DEFAULT NULL COMMENT '修改人',
`create_time` datetime(0) NOT NULL DEFAULT CURRENT_TIMESTAMP(0) COMMENT '创建时间',
`update_time` datetime(0) NULL DEFAULT CURRENT_TIMESTAMP(0) ON UPDATE CURRENT_TIMESTAMP(0) COMMENT '更新时间',
PRIMARY KEY (`id`, `request_time`) USING BTREE
) PARTITION BY list(TO_DAYS(request_time)) (
PARTITION p0 VALUES IN  (0)
) ;

select  *  from  information_schema.partitions  where table_name like 'list_part_table%' ;

alter  table  list_part_table  add partition(partition  p202001 values in (202001));
alter  table  list_part_table  add partition(partition  p20201201 values in (20201201));

select  * from  information_schema.partitions  where table_name like 'list_part_table%' ;

alter  table  list_part_table  drop partition  p202001,p20201201 ;

select  * from  information_schema.partitions  where table_name like 'list_part_table%' ;

DROP  PROCEDURE  IF EXISTS create_list_partition ;
DELIMITER $$
CREATE PROCEDURE  IF  NOT  EXISTS create_list_partition (par_value bigint, tb_schema varchar(128),tb_name varchar(128))
BEGIN
DECLARE par_name varchar(32);
DECLARE par_value_str varchar(32);
DECLARE par_exist int(1);
DECLARE _err int(1);
DECLARE CONTINUE HANDLER FOR SQLEXCEPTION, SQLWARNING, NOT FOUND SET _err = 1;
START TRANSACTION;
SET par_value_str = CONCAT('', par_value);
SET par_name = CONCAT('p', par_value);
SELECT  COUNT(1) INTO par_exist  FROM information_schema.PARTITIONS WHERE TABLE_SCHEMA = tb_schema AND TABLE_NAME = tb_name AND PARTITION_NAME = par_name;
IF (par_exist = 0) THEN
SET @alter_sql = CONCAT('alter table ', tb_name, ' add PARTITION (PARTITION ', par_name, ' VALUES IN (', par_value_str, '))');
PREPARE stmt1 FROM @alter_sql;
EXECUTE stmt1;
END IF;
COMMIT;
END
$$

CALL create_list_partition(202201, 'test', 'list_part_table');
CALL create_list_partition(202202, 'test', 'list_part_table');
CALL create_list_partition(20230912, 'test', 'list_part_table');
CALL create_list_partition(20230913, 'test', 'list_part_table');

select  * from  information_schema.partitions  where table_name like 'list_part_table%' ;

DROP PROCEDURE  IF  EXISTS drop_list_partition ;
DELIMITER $$
CREATE PROCEDURE  IF  NOT  EXISTS drop_list_partition (part_value bigint, tb_schema varchar(128), tb_name varchar(128))
BEGIN
DECLARE str_day varchar(64);
DECLARE _err int(1);
DECLARE done int DEFAULT 0;
DECLARE par_name varchar(64);
DECLARE cur_partition_name CURSOR FOR  SELECT  partition_name FROM INFORMATION_SCHEMA.PARTITIONS WHERE TABLE_SCHEMA = tb_schema AND table_name = tb_name  ORDER BY partition_ordinal_position;
DECLARE CONTINUE HANDLER FOR SQLEXCEPTION, SQLWARNING, NOT FOUND SET _err = 1;
DECLARE CONTINUE HANDLER FOR SQLSTATE '02000' SET done = 1;
SET str_day = CONCAT('',part_value);
OPEN cur_partition_name;
REPEAT
FETCH cur_partition_name INTO par_name;
IF (str_day = SUBSTRING(par_name, 2)) THEN
SET @alter_sql = CONCAT('alter table ', tb_name, ' drop PARTITION ', par_name);
PREPARE stmt1 FROM @alter_sql;
EXECUTE stmt1;
END IF;
UNTIL done END REPEAT;
CLOSE cur_partition_name;
END
$$

CALL drop_list_partition(202201, 'test', 'list_part_table');
CALL drop_list_partition(202202, 'test', 'list_part_table');

select  * from  information_schema.partitions  where table_name like 'list_part_table%' ;