更新数据限制条数 mysql_mysql update limit mysql更新限制语句用法

mysql更新时，要更新记录中某个区间的数据，只能用WHERE条件来限制了，

用LIMIT只能限制更新多少条！测试如下：

UPDATE t_shop SET shop_code = '1' ORDER BY shop_id DESC LIMIT 5,10

上面这句测试了是错误的，MYSQL的UPDATE语句不能更新限制从第几条到第几条！

错误提示：#1064 - You have an error in your SQL syntax; check the manual that corresponds to your MySQL server version for the right syntax to use near '10' at line 1

方式一:直接使用mysql的limit语句

只能用下面这样的语句了，要么你就用where条件语句来限制了

UPDATE t_shop SET shop_code = '1' where shop_id>10 ORDER BY shop_id DESC LIMIT 10

方式二:在条件中使用where语句后面跟limit语句限定更新条数

UPDATE t_shop SET shop_code = '1' where shop_id in

(select shop_id from (select shop_id from t_shop where shop_Id>10 limit 0,10) t )

或者

UPDATE t_shop t1,(select * from t_bd_shop where shop_Id>10 limit 0,10

) t2 SET t1.shop_code = '1' where t1.shop_id =t2.shop_id

完整sql语句如下:

UPDATE t_shop SET shop_code = '1' where shop_id in

(select shop_id from (select shop_id from

t_shop where shop_Id>10 limit 0,10) t )

UPDATE t_shop t1,(select * from t_bd_shop

where shop_Id>10 limit 0,10

) t2 SET t1.shop_code = '1'

where t1.shop_id =t2.shop_id