1　Select Sysobjects.Name As Tb_name, Syscolumns.Name As Col_name, Systypes.Name As Col_type, Syscolumns.Length As Col_len, Isnull(Sysproperties.Value,Syscolumns.Name) As Col_memo,
2　Case When Syscolumns.Name In
3　(Select 主键=A.Name
4　From Syscolumns A
5　Inner Join Sysobjects B On A.Id=B.Id And B.Xtype=\'U\' And B.Name<>\'Dtproperties\'
6　Where Exists(Select 1 From Sysobjects Where Xtype=\'Pk\' And Name In (
7　Select Name From Sysindexes Where Indid In(
8　Select Indid From Sysindexkeys Where Id = A.Id And Colid=A.Colid
9　)))
10　And B.Name=Sysobjects.Name
11　)
12　Then 1 Else 0 End As Is_key
13
14　From Sysobjects,Systypes,Syscolumns
15　Left Join Sysproperties On (Syscolumns.Id = Sysproperties.Id And
16　Syscolumns.Colid = Sysproperties.Smallid)
17
18　Where (Sysobjects.Xtype =\'U\' Or Sysobjects.Xtype =\'V\')
19　And Sysobjects.Id = Syscolumns.Id And Systypes.Xtype = Syscolumns.Xtype
20　And Systypes.Name <> \'Sysname\' And Sysobjects.Name Like \'%\' Order By Sysobjects.Name, Syscolumns.Colid