SQL 判断字段类型语句

-->Title:Generating test data
-->Author:wufeng4552
-->Date :2009-09-25 09:56:07
if object_id('tb')is not null drop table tb
go
create table tb(ID int,name text)
insert tb select 1,'test'
go
--方法1
<div class="codetitle"><a style="CURSOR: pointer" data="69564" class="copybut" id="copybut69564" onclick="doCopy('code69564')"> 代码如下:<div class="codebody" id="code69564">
select sql_variant_property(ID,'BaseType') from tb

--方法2
<div class="codetitle"><a style="CURSOR: pointer" data="61278" class="copybut" id="copybut61278" onclick="doCopy('code61278')"> 代码如下:<div class="codebody" id="code61278">
select object_name(ID)表名,
c.name 字段名,
t.name 数据类型,
c.prec 长度
from syscolumns c
inner join systypes t
on c.xusertype=t.xusertype
where objectproperty(id,'IsUserTable')=1 and id=object_id('tb')