Question

我试图在没有太多运气的情况下查询和排序列。我的数据看起来像这样，与前面的＆＃34; WP＆＃34;。

一致

应显示为

  WP1-WP2
    WP2-WP3
    WP10-WP11
    WP10-WP12

实际显示为

 WP1-WP2
    WP10-WP11
    WP10-WP12
    WP2-WP3

我尝试调整此处找到的几个答案但没有成功。

问题是如何对此列表进行排序？

编辑：我在查询中使用了distinct，不确定这是否会影响我遇到的问题

Answer 1

试试这个，

 select *
 from myStringSorting
order by Cast(Replace(Substring(mycol,0,CHARINDEX('-',mycol)),'WP','') as Int) asc
        ,Cast(Replace(Substring(mycol,CHARINDEX('-',mycol) + 1,LEN(mycol)),'WP','') as Int) asc

点击此链接http://sqlfiddle.com/#!3/ca45f/5

使用DISTINCT，

With CTE as
(
select distinct mycol
 from myStringSorting
 )
 select * from CTE
order by Cast(Replace(Substring(mycol,0,CHARINDEX('-',mycol)),'WP','') as Int) asc
        ,Cast(Replace(Substring(mycol,CHARINDEX('-',mycol) + 1,LEN(mycol)),'WP','') as Int) asc

使用DISTINCT，没有CTE，使用子查询，

Select a.mycol from
(
select distinct mycol
 from myStringSorting
 )as a
order by Cast(Replace(Substring(a.mycol,0,CHARINDEX('-',a.mycol)),'WP','') as Int) asc
        ,Cast(Replace(Substring(a.mycol,CHARINDEX('-',a.mycol) + 1,LEN(a.mycol)),'WP','') as Int) asc

Answer 2

另一种方法

select * from myStringSorting
order by len(mycol),mycol

排序包含文本和数字的字符串

2 个答案: