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

复制代码 代码如下:

select sql_variant_property(ID,'BaseType') from tb

--方法2

复制代码 代码如下:

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')