1.按姓氏笔画排序:
Select *From TableNameOrder By CustomerNameCollate 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.namefrom 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 hcforeachCURSOR GLOBAL FOR SELECT 'kill '+RTRIM(spid) FROMmaster .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 IDFrom 表)Order by IDDesc
----------------------------------
N到结尾记录
Select Top N *From 表Order by IDDesc
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 Namefrom sysobjectswhere xtype='u' and status>=0
10:获取某一个表的所有字段
select namefrom syscolumnswhere 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 sysobjectswhere xtype='P'
13:查询用户创建的所有数据库
select *from master..sysdatabases Dwhere sid not in(select sid from master..syslogins where name='sa')
或者
select dbid, name AS DB_NAMEfrom master..sysdatabaseswhere sid <> 0x01
14:查询某一个表的字段和数据类型
select column_name,data_typefrom information_schema.columns
where table_name = '表名'