msyql分区命令，删除命令

1. 建表建分区

        CREATE TABLE `db`.`table_new` (
          `id` int(11) NOT NULL AUTO_INCREMENT COMMENT '自增id',
          `time` datetime NOT NULL COMMENT '时间',
          `clusterid` varchar(255) COLLATE utf8mb4_bin NOT NULL COMMENT '集群id',
          PRIMARY KEY (`id`,`time`),
          KEY `cluster_time_index` (`clusterid`,`time`),
          KEY `time_index` (`time`)
          ) ENGINE=InnoDB DEFAULT CHARSET=utf8mb4 COLLATE=utf8mb4_bin COMMENT='table_new表'
          /*!50500 PARTITION BY RANGE  COLUMNS(`time`)
          (PARTITION p0001 VALUES LESS THAN ("2020-08-15 00:00:00") ENGINE = InnoDB,
           PARTITION p0002 VALUES LESS THAN ("2020-08-30 00:00:00") ENGINE = InnoDB,
           PARTITION p0003 VALUES LESS THAN ("2020-09-15 00:00:00") ENGINE = InnoDB,
           PARTITION p9999 VALUES LESS THAN (MAXVALUE) ENGINE = InnoDB) */;
   

2. 删除分区

         alter table titles drop partition p0;
   

3. 有表 新增分区

        ALTER TABLE db.table_name
        PARTITION BY RANGE COLUMNS(id)
        (
        PARTITION p0001 VALUES LESS THAN (10),
        PARTITION p9999 VALUES LESS THAN (MAXVALUE)
        );
   

4. 执行 create table table_name_new as select * from table_name 报错Statement violates GTID consistency 【参考】
   create table xxx as select 的方式拆分成两部分。
   create table xxxx like data_mgr;
   insert into xxxx select * from data_mgr;

5. drop delete truncate区别

   drop 删除表 删除数据 无法回滚 会释放空间
   truncate 不删除表 删除数据 无法回滚 会释放空间
   delete 不删除表 删除指定数据