Question

我需要一个查询，它会产生一个序列号，还有一个where条件来过滤那个序列号，例如＆＃34;其中serial_number介于0到10＆＃34之间;

Select  @rown:=@rown+1 serial_number, user_name as un from user
                            (select @rown := 0) as t
                            where                 
                             (@rown := (@rown + 1)) between 0 and 10
                            ORDER BY u.id_user asc

但我没有得到两者之间的结果，请帮助我

Answer 1

您必须使用subquery来实现此目的：

试试这个：

SELECT serial_number, un 
FROM (SELECT (@rown:=@rown+1) AS serial_number, user_name AS un 
      FROM USER, (SELECT @rown := 0) AS t 
      ORDER BY u.id_user ASC
    ) AS A
WHERE serial_number BETWEEN 0 AND 10

Mysql Query在结果中创建序列号，where条件适用于该序列号

1 个答案: