SELECT PARTITION_NAME,TABLE_ROWS FROM INFORMATION_SCHEMA.PARTITIONS WHERE TABLE_NAME = 'xw_user_applyloan_baoxian';

SELECT count(id) as sum ,FROM_UNIXTIME(time, '%Y-%m') as date FROM `xw_user_applyloan_baoxian` GROUP BY date ORDER BY date desc ;

//时间戳

alter table xw_user_applyloan_baoxian algorithm=inplace, lock=none, drop primary key, add primary key (id, time);

alter table xw_user_applyloan_baoxian partition by range columns (time) (

    partition p1711 values less than (1512057599),

    partition p1712 values less than (1514735999),

    partition p0 values less than maxvalue

);

//字符串

alter table xw_user_applyloan_baoxian algorithm=inplace, lock=none, drop primary key, add primary key (id, time);

alter table xw_user_applyloan_baoxian partition by range columns (UNIX_TIMESTAMP(time）) (

    partition p1711 values less than (UNIX_TIMESTAMP('2007-11-30 23:59:59')),

    partition p1712 values less than (UNIX_TIMESTAMP('2007-12-31 23:59:59')),

    partition p0 values less than maxvalue

);

//查看分区情况
SELECT PARTITION_NAME,TABLE_ROWS FROM INFORMATION_SCHEMA.PARTITIONS WHERE TABLE_NAME = 'xw_user_applyloan_baoxian';