--1：獲取當(dāng)前數(shù)據(jù)庫(kù)中的所有用戶表

select Name from sysobjects where xtype='u' and status>=0 

--2：獲取某一個(gè)表的所有字段

select * from syscolumns where id=object_id('test1') 

--3：查看與某一個(gè)表相關(guān)的視圖、存儲(chǔ)過(guò)程、函數(shù)

select a.* from sysobjects a, syscomments b where a.id = b.id and b.text like '%表名%' 

--4：查看當(dāng)前數(shù)據(jù)庫(kù)中所有存儲(chǔ)過(guò)程

select name as 存儲(chǔ)過(guò)程名稱 from sysobjects where xtype='P' 

--5：查詢用戶創(chuàng)建的所有數(shù)據(jù)庫(kù)

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(gè)表的字段、數(shù)據(jù)類型和字段長(zhǎng)度

select column_name,data_type ,character_octet_length from information_schema.columns where table_name = 'test1' 

select column_name,data_type ,character_octet_length from information_schema.columns where table_name = 'test2'