SQL Server 2005:末尾为空值的订单[重复]

Possible Duplicate:
Case Order by using Null

可能重复:使用Null的大小写顺序

I'm looking to get a list of records ordered by an "ordernum" field. The ordernum field is an int field. This field starts as NULL until set by a user. I would like the NULL entries to appear at the end of the list.

我正在查找由“ordernum”字段排序的记录列表。ordernum字段是一个int字段。此字段从NULL开始，直到用户设置。我希望NULL条目出现在列表的末尾。

I am building a query as follows:

我正在构建一个查询，如下所示:

select *, case when (ordernum is null) then [largestInt] else ordernum end as newordernum
from tableName
order by newordernum

I know I could enter the value for the largest possible int for [largestInt], but I would like to replace [largestInt] with a variable. Is this possible?

我知道我可以输入最大可能的整数，但我想用一个变量替换[large]。这是可能的吗?

1 个解决方案

#1

I found a way to order NULL values on the bottom.

我找到了一种方法，在底部为空值排序。

http://sqlblog.com/blogs/denis_gobo/archive/2007/10/19/3048.aspx

It meets my needs quite nicely. My query is now:

它很好地满足了我的需要。我现在查询的方法是:

select *
from tableName
order by case when ordernum is null then 1 else 0 end, ordernum

#1