SQL 数据库开发中的一些精典代码

1.按姓氏笔画排序: Select * From TableName Order By CustomerName Collate Chinese_PRC_Stroke_ci_as

        2.数据库加密: select encrypt('原始密码') select pwdencrypt('原始密码') select pwdcompare('原始密码','加密后密码') = 1--相同；否则不相同

        3.取回表中字段: declare @list varchar(1000),@sql nvarchar(1000) select @list=@list+','+b.name from sysobjects a,syscolumns b where a.id=b.id and a.name='表A' set @sql='select '+right(@list,len(@list)-1)+' from 表A' exec (@sql)

        4.查看硬盘分区: EXEC master..xp_fixeddrives

        5.比较A,B表是否相等: if (select checksum_agg(binary_checksum(*)) from A)     =    (select checksum_agg(binary_checksum(*)) from B) print '相等' else print '不相等'

        6.杀掉所有的事件探察器进程: DECLARE hcforeach CURSOR GLOBAL FOR SELECT 'kill '+RTRIM(spid) FROM master.dbo.sysprocesses WHERE program_name IN('SQL profiler',N'SQL 事件探查器') EXEC sp_msforeach_worker '?'

        7.记录搜索: 开头到N条记录 Select Top N * From 表 ------------------------------- N到M条记录(要有主索引ID) Select Top M-N * From 表 Where ID in (Select Top M ID From 表) Order by ID Desc ---------------------------------- N到结尾记录 Select Top N * From 表 Order by ID Desc

        8.如何修改数据库的名称: sp_renamedb 'old_name', 'new_name'

        9：获取当前数据库中的所有用户表 select Name from sysobjects where xtype='u' and status>=0

        10：获取某一个表的所有字段 select name from syscolumns where id=object_id('表名')

        11：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%'

        12：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'

        13：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

        14：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 = '表名'