MS-SQL数据库开发常用代码

文章作者 100test 发表时间 2008:01:11 12:23:53
来源 100Test.Com百考试题网

这些都是平时手机的一些MSSQL数据库开发的小代码，大家有心的可以记一下。

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:
0select encrypt(原始密码)
0select pwdencrypt(原始密码)
0select pwdcompare(原始密码,加密后密码) = 1--相同；否则不相同 encrypt(原始密码)
0select pwdencrypt(原始密码)
0select 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)
0select @list=@list , b.name from sysobjects a,syscolumns b where a.id=b.id and a.name=表A
set @sql=0select 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 (0select checksum_agg(binary_checksum(*)) from A)
=
(0select 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,NSQL 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
0select Name from sysobjects where xtype=u and status>=0

10：获取某一个表的所有字段
0select 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
0select 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
0select 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
0select * from master..sysdatabases D where sid not in(0select sid from master..syslogins where name=sa)

或者
0select 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
0select column_name,data_type from information_schema.columns
where table_name = 表名
[n].[标题]:
Select * From TableName Order By CustomerName
[n].[标题]:
Select * From TableName Order By CustomerName