正在作一个关于SQL SERVER数据库导入Excel文件的程序,要读取数据库中的列的信息,从网上找了很多资料,终于总结出来比较理想的sql语句,执行后返回的列分别是:表名、列名、列类型、列长度、列描述、是否主键,语句如下:
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 In3
(Select 主键=A.Name4
From Syscolumns A5
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.Colid9
)))10
And B.Name=Sysobjects.Name11
)12
Then 1 Else 0 End As Is_key13
14
From Sysobjects,Systypes,Syscolumns15
Left Join Sysproperties On (Syscolumns.Id = Sysproperties.Id And16
Syscolumns.Colid = Sysproperties.Smallid)17
18
Where (Sysobjects.Xtype ='U' Or Sysobjects.Xtype ='V')19
And Sysobjects.Id = Syscolumns.Id And Systypes.Xtype = Syscolumns.Xtype20
And Systypes.Name <> 'Sysname' And Sysobjects.Name Like '%' Order By Sysobjects.Name, Syscolumns.Colid结果如图: