mysql 为现有表建立范围分区

为某列进行分区。范围这边自己定义

ALTER TABLE ts partition by RANGE(id)
(

 PARTITION p9 VALUES LESS THAN (10000) ,
 PARTITION p10 VALUES LESS THAN (20000) ,
 PARTITION p11 VALUES LESS THAN MAXVALUE 
)

查看建立的分区

 

SELECT
  partition_name part, 
  partition_expression expr, 
  partition_description descr, 
  table_rows 
FROM
  INFORMATION_SCHEMA.partitions 
WHERE
  TABLE_SCHEMA = SCHEMA() 
  AND TABLE_NAME='ts'

 

 

 

查询某一分区下的数据

select * from ts partition(p10);