SQL 学习与工作日常：语句积累

1.跨服务器连接数据表

--打开服务器配置'Ad Hoc Distributed Queries'

--exec sp_configure 'show advanced options',1

--reconfigure with override

--exec sp_configure 'Ad Hoc Distributed Queries',1

--reconfigure with override

SELECT *

FROM OPENDATASOURCE('sqloledb','data source=172.168.1.52; user id=sa; password=888').[ce_learning].[dbo].[T_LEARNING_PROJECT]  a

left join [ce_learning].[dbo].[T_LEARNING_PROJECT_TERM]b on a.PROJECTID=b.Projectid

 

2.临时表判断

IF OBJECT_ID(N'tempdb.dbo.#temp1') IS NOT NULL

BEGIN

   DROP  TABLE  #temp1

END

 

3. openrowset excel:SQL Server 打开Excel

 select * from OpenRowSet('Microsoft.ACE.OLEDB.12.0', 'Excel 12.0;HDR=Yes;IMEX=1;Database=D:\测试.xlsx', 'select * from [Sheet1$]')  

 

4.去空格

ltrim(rtrim(RET.姓名))

 

5.数据库创建

create database HNWSupDB

on

(name = 'HNWSupDB', filename ='d:\database\HNWSupDB.mdf',

size = 200MB,

maxsize = unlimited

)

LOG ON

(NAME = 'HNWSupDB_log', filename = 'd:\database\HNWSupDB.ldf',

size = 100mb,

maxsize = unlimited

)

 

6.备份数据库

backup database [dbname] to disk='D:\DATAUP\dbname.bak' with format 

 

7.restoredatabase数据库恢复

restore database MasterManageDB_test from disk = 'D:\DataBackup\MasterManageDB_TEST.bak'

with replace 

--复制数据库

RESTORE DATABASE [ProjectManageDB_test] FROM  DISK = N'D:\DataBackup\ProjectManageDB_20151203.bak' with replace,

MOVE 'ProjectManage' TO 'D:\sqlDATA\ProjectManage_test.mdf', 

MOVE 'ProjectManage_log' TO 'D:\sqlDATA\ProjectManage_test_log.ldf'

 

8.解密

SELECT *  INTO Teacherinfo_tmp  FROM 

(

SELECT  

        id ,

        [dbo].DecryptDES(a.Name,'8888') AS Name ,

        [dbo].DecryptDES(a.IdNumber,'8888') AS IdNumber  

FROM TeacherInfo a 

) m

 

9.季度、月、周

DECLARE @Week INT ,@Month INT ,@Quarter INT  

SELECT @Quarter=datepart(quarter,getdate()) 

SELECT @Month=MONTH(GETDATE())

SELECT @Week= datepart(week,getdate()) 

SELECT @Quarter, @Month ,@Week

 

10.自动添加0

SELECT  left(ltrim(1)+replicate('0',12),12) 

 

11.1赋值为0 ，0赋值为1

a.IsDel = (a.IsDel +1)%2

 

12.缩小日志文件

　　查看数据库的recovery_model_desc类型

　　　　SELECT NAME, recovery_model_desc FROM sys.databases

　　如果是FULL类型，修改为SIMPLE类型　　

　　　　ALTER DATABASE ASFCORE SET Recovery simple

　　收缩日志文件大小(单位是M)

　　　　DBCC SHRINKFILE (N'ASFCORE_log' , 10)

　　检查日志文件名称

　　　　USE ASFCORE
　　　　SELECT NAME, size FROM sys.database_files

　　恢复成FULL类型

　　　　ALTER DATABASE ASFCORE SET Recovery FULL

 

13.暂时关闭触发器DISABLE TRIGGER

ALTER TABLE dbo.AuditResult DISABLE TRIGGER ALL

--这里是操作

ALTER TABLE dbo.AuditResult ENABLE TRIGGER ALL

 

14.SQL Server数据库复制出现无法找到该行错误：查看执行的命令(删除或修改)

 exec distribution..sp_browsereplcmds '0x0000002600077156000C00000000','0x0000002600077156000C00000000'

 

15.关于sql server 代理（已禁用代理xp）

sp_configure 'show advanced options', 1;
GO
RECONFIGURE WITH OVERRIDE; 
GO
sp_configure 'Agent XPs', 1;
GO
RECONFIGURE WITH OVERRIDE 
GO

16.

还原或删除sql server 2008数据库时，出现：“因为数据库正在使用，所以无法获得对数据库的独占访问权”，

终解决方案如下，关键SQL语句：

ALTER DATABASE [datebase] SET OFFLINE WITH ROLLBACK IMMEDIATE

用完之后再

ALTER  database  [ datebase]  set   online

17.没有执行权限，赋予数据库文件权限

USE ProjectManageDB
GO
EXEC dbo.sp_changedbowner @loginame = N'sa', @map = false
GO

 18.批量删除存储过程

declare proccur cursor
for
select [name] from sysobjects where type='P'
declare @procname varchar(100)
open proccur
fetch next from proccur into @procname
while(@@FETCH_STATUS = 0)
begin
exec('drop proc ' + @procname)
print(@procname + '已被删除')
fetch next from proccur into @procname
end
close proccur
deallocate proccur

--查看函数 存储过程 视图 具体代码

USE AdventureWorks;
GO
SELECT sm.object_id, OBJECT_NAME(sm.object_id) AS object_name, o.type, o.type_desc, sm.definition
FROM sys.sql_modules AS sm
JOIN sys.objects AS o ON sm.object_id = o.object_id

where o.type LIKE '%F%' and o.is_ms_shipped=0 --这里显示的是所有自定义函数
ORDER BY o.type;
GO

--复制标识列问题

DBCC CHECKIDENT([User], RESEED, 691106)