SQL 判断字段类型语句

复制代码 代码如下:

select sql_variant_property(ID,'BaseType') from tb

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')