1.查询已有分区
select partition_name part, partition_expression expr, partition_description descr, table_rows from information_schema.partitions where table_schema = schema() and table_name='表名';
2.删除分区
alter table 表名 drop partition 分区名; //例如 alter table tbUUWiFiSession drop partition p20190625;
3.添加分区
ALTER TABLE 表名 ADD PARTITION (PARTITION 分区名 VALUES less than (条件) ENGINE = InnoDB); //例如 ALTER TABLE tbUUWiFiSession ADD PARTITION (PARTITION p20190626 VALUES less than (20190627) ENGINE = InnoDB);
4.清空分区数据
alter table tbXXX truncate partition p20210106;