常用的SQL

-----------------------------------------------------------创建数据库
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create database test
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-----------------------------------------------------------选择数据库
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use test
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-----------------------------------------------------------创建表
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create table test
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(
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id int identity(1,1) primary key ,
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test char(50) not null
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)
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select * from test
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------------------------------------------------------------新增字段名 "wwwwww" 类型 char(10)
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ALTER TABLE dbo.test ADD
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wwwwww char(10) NULL
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------------------------------------------------------------更改字段名 “wwwwww” 为“wttt”
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EXECUTE sp_rename N'dbo.test.wwwwww', N'Tmp_wttt', 'COLUMN'
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EXECUTE sp_rename N'dbo.test.Tmp_wttt', N'wttt', 'COLUMN'
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------------------------------------------------------------删除字段各 “wttt”
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Alter table dbo.test drop
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COLUMN wttt
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------------------------------------------------------------修改字段类型
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Alter TABLE dbo.test alter column wwwwww nvarchar(255)
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------------------------------------------------------------查找字段中内容，转换字段类型。
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select charindex(str1,str2)
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select left(convert(nvarchar(30),createdatetime,120),10)
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/* SQL交叉表实例很简单的一个东西，见网上好多朋友问“怎么实现交叉表？”，以下是我写的一个例子，数据库基于SQL SERVER 2000。
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-- ======================================================
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--交叉表实例
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-- ======================================================
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建表：
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在查询分析器里运行：
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*/
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CREATE TABLE [Test] (
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[id] [int] IDENTITY (1, 1) NOT NULL ,
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[name] [nvarchar] (50) COLLATE Chinese_PRC_CI_AS NULL ,
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[subject] [nvarchar] (50) COLLATE Chinese_PRC_CI_AS NULL ,
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[Source] [numeric](18, 0) NULL
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) ON [PRIMARY]
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GO
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INSERT INTO [test] ([name],[subject],[Source]) values (N'张三',N'语文',60)
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INSERT INTO [test] ([name],[subject],[Source]) values (N'李四',N'数学',70)
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INSERT INTO [test] ([name],[subject],[Source]) values (N'王五',N'英语',80)
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INSERT INTO [test] ([name],[subject],[Source]) values (N'王五',N'数学',75)
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INSERT INTO [test] ([name],[subject],[Source]) values (N'王五',N'语文',57)
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INSERT INTO [test] ([name],[subject],[Source]) values (N'李四',N'语文',80)
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INSERT INTO [test] ([name],[subject],[Source]) values (N'张三',N'英语',100)
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Go
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--交叉表语句的实现：
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--用于：交叉表的列数是确定的
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select name,sum(case subject when '数学' then source else 0 end) as '数学',
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sum(case subject when '英语' then source else 0 end) as '英语',
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sum(case subject when '语文' then source else 0 end) as '语文'
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from test
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group by name
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--用于：交叉表的列数是不确定的
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declare @sql varchar(8000)
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set @sql = 'select name,'
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select @sql = @sql + 'sum(case subject when '''+subject+''' then source else 0 end) as '''+subject+''','
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from (select distinct subject from test) as a
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select @sql = left(@sql,len(@sql)-1) + ' from test group by name'
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select @sql
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exec(@sql)
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go
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/*-----------------------备份数据库---------------------------------------*/
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BACKUP DATABASE [数据库名] TO DISK = N'F:\data\数据库备份' WITH NOINIT , NOUNLOAD , NAME = N'数据库备份', NOSKIP , STATS = 10, NOFORMAT
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declare @filename nvarchar(100)
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set @filename='E:\DataBase\back\KingCRM2008data'+convert(char(10),getdate(),112)
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print @filename
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BACKUP DATABASE [KingCRM2008] TO DISK = @filename WITH NOINIT , NOUNLOAD , NAME = N'KingCRM2008 备份', NOSKIP , STATS = 10, NOFORMAT
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use pubs
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if exists (select name from sysobjects where name='proc_test_select' and type='p')
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drop PROC proc_test_select
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go
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create proc proc_test_select
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as
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select * from test
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go
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/*----------------------使用带有复杂 SELECT 语句的简单过程------------------------*/
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USE pubs
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IF EXISTS (SELECT name FROM sysobjects
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WHERE name = 'au_info_all' AND type = 'P')
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DROP PROCEDURE au_info_all
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GO
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CREATE PROCEDURE au_info_all
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AS
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SELECT au_lname, au_fname, title, pub_name
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FROM authors a INNER JOIN titleauthor ta
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ON a.au_id = ta.au_id INNER JOIN titles t
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ON t.title_id = ta.title_id INNER JOIN publishers p
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ON t.pub_id = p.pub_id
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GO
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/* end */
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exec au_info_all
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/*-----------------------使用带有参数的简单过程 --------------------------------*/
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125

USE pubs
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IF EXISTS (SELECT name FROM sysobjects
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WHERE name = 'au_info' AND type = 'P')
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DROP PROCEDURE au_info
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GO
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USE pubs
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GO
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CREATE PROCEDURE au_info
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@lastname varchar(40),
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@firstname varchar(20)
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AS
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SELECT au_lname, au_fname, title, pub_name
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FROM authors a INNER JOIN titleauthor ta
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ON a.au_id = ta.au_id INNER JOIN titles t
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ON t.title_id = ta.title_id INNER JOIN publishers p
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ON t.pub_id = p.pub_id
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WHERE au_fname = @firstname
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AND au_lname = @lastname
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GO
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/*au_info 存储过程可以通过以下方法执行*/
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EXECUTE au_info 'Dull', 'Ann'
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-- Or
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EXECUTE au_info @lastname = 'Dull', @firstname = 'Ann'
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/*--------------------使用带有通配符参数的简单过程----------------------------------*/
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153

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USE pubs
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IF EXISTS (SELECT name FROM sysobjects
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WHERE name = 'au_info2' AND type = 'P')
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DROP PROCEDURE au_info2
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GO
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USE pubs
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GO
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CREATE PROCEDURE au_info2
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@lastname varchar(30) = 'D%',
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@firstname varchar(18) = '%'
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AS
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SELECT au_lname, au_fname, title, pub_name
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FROM authors a INNER JOIN titleauthor ta
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ON a.au_id = ta.au_id INNER JOIN titles t
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ON t.title_id = ta.title_id INNER JOIN publishers p
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ON t.pub_id = p.pub_id
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WHERE au_fname LIKE @firstname
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AND au_lname LIKE @lastname
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GO
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/*--------------au_info2 存储过程可以用多种组合执行。下面只列出了部分组合：-----------*/
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EXECUTE au_info2
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-- Or
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EXECUTE au_info2 'Wh%'
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/*---------------------使用 OUTPUT 参数--------------------------*/
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USE pubs
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GO
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IF EXISTS(SELECT name FROM sysobjects
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WHERE name = 'titles_sum' AND type = 'P')
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DROP PROCEDURE titles_sum
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GO
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USE pubs
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GO
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CREATE PROCEDURE titles_sum @@TITLE varchar(40) = '%', @@SUM money OUTPUT
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AS
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SELECT 'Title Name' = title
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FROM titles
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WHERE title LIKE @@TITLE
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SELECT @@SUM = SUM(price)
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FROM titles
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WHERE title LIKE @@TITLE
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GO
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/*---------接下来，将该 OUTPUT 参数用于控制流语言----------*/
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DECLARE @@TOTALCOST money
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EXECUTE titles_sum 'The%', @@TOTALCOST OUTPUT
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IF @@TOTALCOST < 200
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BEGIN
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PRINT ' '
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PRINT 'All of these titles can be purchased for less than $200.'
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END
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ELSE
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SELECT 'The total cost of these titles is $'
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+ RTRIM(CAST(@@TOTALCOST AS varchar(20)))
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/*---------使用 WITH ENCRYPTION 选项----------*/
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IF EXISTS (SELECT name FROM sysobjects
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WHERE name = 'encrypt_this' AND type = 'P')
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DROP PROCEDURE encrypt_this
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GO
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USE pubs
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GO
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CREATE PROCEDURE encrypt_this
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WITH ENCRYPTION
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AS
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SELECT *
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FROM authors
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GO
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EXEC sp_helptext encrypt_this
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--接下来，选择加密存储过程内容的标识号和文本。
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SELECT c.id, c.text
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FROM syscomments c INNER JOIN sysobjects o
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ON c.id = o.id
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WHERE o.name = 'encrypt_this'
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exec sp_decrypt encrypt_this
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/*---------存储过程解密(破解函数,过程,触发器,视图.仅限于SQLSERVER2000)-------------*/
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create PROCEDURE sp_decrypt(@objectName varchar(50))
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AS
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begin
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begin tran
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declare @objectname1 varchar(100),@orgvarbin varbinary(8000)
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declare @sql1 nvarchar(4000),@sql2 nvarchar(4000),@sql3 nvarchar(4000),@sql4 nvarchar(4000),@sql5 nvarchar(4000),@sql6 nvarchar(4000),@sql7 nvarchar(4000),@sql8 nvarchar(4000),@sql9 nvarchar(4000),@sql10 nvarchar(4000)
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DECLARE @OrigSpText1 nvarchar(4000), @OrigSpText2 nvarchar(4000) , @OrigSpText3 nvarchar(4000), @resultsp nvarchar(4000)
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declare @i int,@status int,@type varchar(10),@parentid int
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declare @colid int,@n int,@q int,@j int,@k int,@encrypted int,@number int
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select @type=xtype,@parentid=parent_obj from sysobjects where id=object_id(@ObjectName)
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249

create table #temp(number int,colid int,ctext varbinary(8000),encrypted int,status int)
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insert #temp SELECT number,colid,ctext,encrypted,status FROM syscomments WHERE id = object_id(@objectName)
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select @number=max(number) from #temp
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set @k=0
253

254

while @k<=@number
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begin
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if exists(select 1 from syscomments where id=object_id(@objectname) and number=@k)
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begin
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if @type='P'
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set @sql1=(case when @number>1 then 'ALTER PROCEDURE '+ @objectName +';'+rtrim(@k)+' WITH ENCRYPTION AS '
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else 'ALTER PROCEDURE '+ @objectName+' WITH ENCRYPTION AS '
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end)
262

263

if @type='TR'
264

set @sql1='ALTER TRIGGER '+@objectname+' ON '+OBJECT_NAME(@parentid)+' WITH ENCRYPTION FOR INSERT AS PRINT 1 '
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266

if @type='FN' or @type='TF' or @type='IF'
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set @sql1=(case @type when 'TF' then
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'ALTER FUNCTION '+ @objectName+'(@a char(1)) returns @b table(a varchar(10)) with encryption as begin insert @b select @a return end '
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when 'FN' then
270

'ALTER FUNCTION '+ @objectName+'(@a char(1)) returns char(1) with encryption as begin return @a end'
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when 'IF' then
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'ALTER FUNCTION '+ @objectName+'(@a char(1)) returns table with encryption as return select @a as a'
273

end)
274

275

if @type='V'
276

set @sql1='ALTER VIEW '+@objectname+' WITH ENCRYPTION AS SELECT 1 '
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278

set @q=len(@sql1)
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set @sql1=@sql1+REPLICATE('-',4000-@q)
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select @sql2=REPLICATE('-',4000),@sql3=REPLICATE('-',4000),@sql4=REPLICATE('-',4000),@sql5=REPLICATE('-',4000),@sql6=REPLICATE('-',4000),@sql7=REPLICATE('-',4000),@sql8=REPLICATE('-',4000),@sql9=REPLICATE('-',4000),@sql10=REPLICATE('-',4000)
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exec(@sql1+@sql2+@sql3+@sql4+@sql5+@sql6+@sql7+@sql8+@sql9+@sql10)
282

end
283

set @k=@k+1
284

end
285

286

set @k=0
287

while @k<=@number
288

begin
289

290

if exists(select 1 from syscomments where id=object_id(@objectname) and number=@k)
291

begin
292

select @colid=max(colid) from #temp where number=@k
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set @n=1
294

295

while @n<=@colid
296

begin
297

select @OrigSpText1=ctext,@encrypted=encrypted,@status=status FROM #temp WHERE colid=@n and number=@k
298

299

SET @OrigSpText3=(SELECT ctext FROM syscomments WHERE id=object_id(@objectName) and colid=@n and number=@k)
300

if @n=1
301

begin
302

if @type='P'
303

SET @OrigSpText2=(case when @number>1 then 'CREATE PROCEDURE '+ @objectName +';'+rtrim(@k)+' WITH ENCRYPTION AS '
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else 'CREATE PROCEDURE '+ @objectName +' WITH ENCRYPTION AS '
305

end)
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307

308

if @type='FN' or @type='TF' or @type='IF'--刚才有错改一下
309

SET @OrigSpText2=(case @type when 'TF' then
310

'CREATE FUNCTION '+ @objectName+'(@a char(1)) returns @b table(a varchar(10)) with encryption as begin insert @b select @a return end '
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when 'FN' then
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'CREATE FUNCTION '+ @objectName+'(@a char(1)) returns char(1) with encryption as begin return @a end'
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when 'IF' then
314

'CREATE FUNCTION '+ @objectName+'(@a char(1)) returns table with encryption as return select @a as a'
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end)
316

317

if @type='TR'
318

set @OrigSpText2='CREATE TRIGGER '+@objectname+' ON '+OBJECT_NAME(@parentid)+' WITH ENCRYPTION FOR INSERT AS PRINT 1 '
319

320

if @type='V'
321

set @OrigSpText2='CREATE VIEW '+@objectname+' WITH ENCRYPTION AS SELECT 1 '
322

323

set @q=4000-len(@OrigSpText2)
324

set @OrigSpText2=@OrigSpText2+REPLICATE('-',@q)
325

end
326

else
327

begin
328

SET @OrigSpText2=REPLICATE('-', 4000)
329

end
330

--start counter
331

SET @i=1
332

--fill temporary variable
333

334

SET @resultsp = replicate(N'A', (datalength(@OrigSpText1) / 2))
335

336

--loop
337

WHILE @i<=datalength(@OrigSpText1)/2
338

BEGIN
339

340

SET @resultsp = stuff(@resultsp, @i, 1, NCHAR(UNICODE(substring(@OrigSpText1, @i, 1)) ^
341

(UNICODE(substring(@OrigSpText2, @i, 1)) ^
342

UNICODE(substring(@OrigSpText3, @i, 1)))))
343

SET @i=@i+1
344

END
345

set @orgvarbin=cast(@OrigSpText1 as varbinary(8000))
346

set @resultsp=(case when @encrypted=1
347

then @resultsp
348

else convert(nvarchar(4000),case when @status&2=2 then uncompress(@orgvarbin) else @orgvarbin end)
349

end)
350

print @resultsp
351

--execute( @resultsp)
352

set @n=@n+1
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354

end
355

356

end
357

set @k=@k+1
358

end
359

360

drop table #temp
361

rollback tran
362

end
363

GO
364

365

366

/*----------------------------------------------------------------------------------------*/
367

master.dbo.xp_cmdshell 'osql -U sa -P -i e:\KingCRM\setup\setup\sql.sql'
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posted @ 2006-07-31 17:28 ssihc 阅读(289) 评论(0) 编辑收藏举报

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常用的SQL

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