mysql select自增变量(包括读取当前第几行)

mysql select自增变量(包括读取当前第几行)

SET @rownum =0;
select id,@rownum := @rownum +1 as i from ceshi order by dd desc,id desc;

变量是直接输出在结果集的

SET @rownum =0;

@rownum :=1
这2个个是变量赋值的方式

SET @rownum =0;
select i from
(select id,dd,@rownum := @rownum +1 as i from ceshi order by dd desc,id desc) as cc where id=4;
这个查询用户第几名的

不过mysql貌似没办法执行多条语句 所以看看就可以了