1：獲取當前數據庫中的所有用戶表
select Name from sysobjects where xtype='u' and status>=0
2：獲取某一個表的所有字段
select name from syscolumns where id=object_id('表名')
3：查看與某一個表相關的視圖、存儲過程、函數
select a.* from sysobjects a, syscomments b where a.id = b.id and b.text like '%表名%'
4：查看當前數據庫中所有存儲過程
select name as 存儲過程名稱 from sysobjects where xtype='P'
5：查詢用戶創建的所有數據庫
select * from master..sysdatabases D where sid not in(select sid from master..syslogins where name='sa')
或者
select dbid, name AS DB_NAME from master..sysdatabases where sid <> 0x01
6：查詢某一個表的字段和數據類型
select column_name,data_type from information_schema.columns
where table_name = '表名'
