判断表中是否存在SQL自增列

　　如何判断表中是否存在SQL自增列呢？这是很多人都提到过的问题，下面就为您介绍判断表中是否存在SQL自增列的实现方法，供您参考  。

　　判断Table是否存在SQL自增列(Identity column)：

　　declare @Table_name varchar(60)

　　set @Table_name = ;

　　if Exists(Select top 1 1 from sysobjects
           Where objectproperty(id, TableHasIdentity) = 1
             and upper(name) = upper(@Table_name)
         )
     select 1
else select 0

　　-- or

　　if Exists(Select top 1 1 from sysobjects so
           Where so.xtype = U
             and upper(so.name) = upper(@Table_name)
             and Exists(Select Top 1 1 from syscolumns sc
                         Where sc.id = so.id
                           and columnproperty(sc.id, sc.name, IsIdentity) = 1
                       )
         )
       select 1
else select 0

　　判断Table是否存在自增列(Identity column),并查出自增列相关数据：

　　declare @Table_name varchar(60)
set @Table_name = ;