将SQL SERVER中所有表的列信息显示出来〔总结〕

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：

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,

case when SysColumns.name in

(select 主键=a.name

FROM syscolumns a

inner join sysobjects b on a.id=b.id and b.xtype='U' and b.name<>'dtproperties'

where exists(SELECT 1 FROM sysobjects where xtype='PK' and name in (

SELECT name FROM sysindexes WHERE indid in(

SELECT indid FROM sysindexkeys WHERE id = a.id AND colid=a.colid

)))

and b.name=SysObjects.Name

)

then 1 else 0 end as is_key

FROM SysObjects,SysTypes,SysColumns

LEFT JOIN SysProperties ON (Syscolumns.Id = Sysproperties.Id AND

Syscolumns.Colid = Sysproperties.Smallid)

WHERE (Sysobjects.Xtype ='u' OR Sysobjects.Xtype ='v')

AND Sysobjects.Id = Syscolumns.Id AND SysTypes.XType = Syscolumns.XType

AND SysTypes.Name <> 'sysname' AND Sysobjects.Name Like '%' ORDER By SysObjects.Name, SysColumns.colid

如果只想操作一个表的，那么把最后的％换成表名就可以了。

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