SQL 判断字段类型语句

时间:2022-04-08 08:12:58

-->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')