1:获取当前数据库中的所有用户表: select Name from sysobjects where xtype='u' and status>=0 
2:获取某一个表的所有字段: select name from syscolumns where id=object_id(N'表名') 
3:查看与某一个表相关的视图、存储过程、函数: select a.* from sysobjects a, syscomments b where a.id = b.id and b.text like '%表名%' 
4:查看当前数据库中所有存储过程: select name as 存储过程名称 from sysobjects where xtype='P' 
5:查询用户创建的所有数据库: 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:查询某一个表的字段和数据类型: select column_name,data_type from information_schema.columns where table_name = N'表名'  
7:获取数据库文件路径: select ltrim(rtrim(filename)) from 数据库名..sysfiles where charindex('MDF',filename)>0 或者 select ltrim(rtrim(filename)) from 数据库名..sysfiles where charindex('LDF',filename)>0  |