日期:2014-05-17 浏览次数:20583 次
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-- Author :DBA_Huangzj(發糞塗牆)
-- Date :2013-07-25 09:44:10
-- Version:
-- Microsoft SQL Server 2014 (CTP1) - 11.0.9120.5 (X64)
-- Jun 10 2013 20:09:10
-- Copyright (c) Microsoft Corporation
-- Enterprise Evaluation Edition (64-bit) on Windows NT 6.2 <X64> (Build 9200: ) (Hypervisor)
--
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--> 测试数据:[huang]
if object_id('[huang]') is not null drop table [huang]
go
create table [huang]([a] int,[b] int)
insert [huang]
select null,1 union all
select null,2 union all
select 3,4
--------------开始查询--------------------------
select * from [huang]
----------------结果----------------------------
/*
a b
----------- -----------
NULL 1
NULL 2
3 4
*/
if object_id('[tb]') is not null drop table tb
go
create table tb([a] int,[b] int)
insert tb
select null,1 union all
select null,2 union all