SQL Server

Some problem solving methods for installing sqlserver20081, the installation of SQL Server appears as shown, the solution is: start → run → input "regedit" → find "hkey_local_machine\system\currentcontrolset\control\ Session Manager "Click the item

------Backup Restore--right-click database---Tasks--backup: Backs up data to a. Bak end folder without affecting the database's normal operation--restore: Restore bak file to database-----detach, attach--Detach: Detach a database from a database

database key points of knowledge:Primary KeyPRIMARY KeyReferencesFOREIGN KeydistinctGo heavyIdentitySelf-growthCheckConstraint Fenshudecimal( -,2)Check(Fenshu>=0 andFenshu -)--The input scores range from 0 to 100 UniqueUnique constraint Fenshuint

It is convenient to use the ON Delete CASCADE option for FOREIGN key in the case of cascading deletions, but in the same table, if there are two foreign keys referencing the external data, you can set at most one foreign key to the on delete CASCADE.

From: Http://blog.csdn.net/dba_huangzj/article/details/7952403/method One: Use graphical operations (GUI) to open ssms (SQL Server Management Studio) Step 1: Right-click the database you want to downgrade, press Select:Step 2: In the dialog box,

1,distinctTo re-retrieve a column A worker's salary is greater than or equal to the warehouse number of any worker's salary in the WH1 warehouse .Select distinctCno fromZhigongbiaowhereGongzi>=(Select Min(Gongzi) fromZhigongbiaowhereCnoinch('WH1'))2,

Grammar:CREATE [Index type] Index index nameOn table name (column name)With FILLFACTOR = fill factor value 0~100GO/* Instance */Use library nameGOIf EXISTS (SELECT * from sysindexes WHERE name= ' ix_test_tname ')--detects if the Ix_test_tname index

What is a cursorThe result set, which is the collection of all row data returned after the select query.Cursors are a mechanism for working with result sets, which can locate a row in the result set, read or write multiple data, or move the cursor

This article is reproduced in the address: http://jingyan.baidu.com/article/d5c4b52bc5c102da570dc547.htmlDuplicate table structureIn the process of using SQL Server, we may need to copy the table from one database to another, and today, we will

Since it is often necessary to synchronize tests and change agent profile properties, it is always scripted to facilitate testing.Agent Configuration parameter location:The parameters inside are the parameters that need to be changed, which are not

Cardinality table-Used to store number prefixes and typesThe following tables are builtCREATE TABLE [dbo]. [Serialno] ([SCode] [varchar] () not NULL,[SName] [varchar] (+) NULL,[SQZ] [varchar] () NULL,[Svalue] [varchar] () NULL,CONSTRAINT

PIVOT syntax.SELECT [First pivot column] as [Second pivot column] as ...[Last Pivot column] as From( for generating data)Aliases for as PIVOT( ()For[In ([First pivot column], [Second pivot column],... [last pivot column])) as ;SELECT * FROM

first, write it in front.In the blink of an eye is Monday, recalling the days of double Hugh, short and happy, in the sunny afternoon, can do their own to do anything, comfortable comfort, or reading, or sports, or music, when we calm down to slowly

--Create a Test Table--drop table fulltextindexingcreate table fulltextindexing (ID INT IDENTITY () not null,sentence VARCHAR (MAX))- -Create a clustered index alter TABLE fulltextindexing add CONSTRAINT pk_fulltextindexing PRIMARY KEY CLUSTERED (ID

# CODING=GBKImport SYSImport pymssql#尝试数据库连接Try:conn = Pymssql.connect (host= "192.168.1.43", user= "sa", password= "sa01!", database= "master")except Pymssql. Operationalerror, msg:print "Error:could not Connection SQL server!please Check your

There are four ranking functions in SQL Server, namely:1, Row_number ()2, Ntile ()3. Rank ()4, Dense_rank ()-------------------------------------------------------------------------To facilitate demonstration, we first set up related tablesCREATE

SET @_tmpdatetime = GETDATE ()EXEC dbo. Dtw_common_generateproofcode @ProofType = ' so ', @[email protected], @ProofDate = @_tmpdatetime,@RtnCode = @_tmpproofcode OUTPUT--the final code generatedUse [SZVB]GO/****** object:storedprocedure [dbo]. [Dtw_

Here are some of the information found online to solve this problem:Get this job_id first:USE [msdb]GO/****** Object: Job [dbbackup_diff.Subplan_1] Script Date: 04/08/2015 10:22:46

Transactions: More of a processing mechanism (die)Transactions are for additions and deletions (because they change the data)A transaction is composed of multiple SQL statements for multiple statements, and the overall executionThe 4 characteristics

The--SQL statement uses the following stored procedure/*--Data Export ExcelExport the data in the query to Excel, including the field name, the file as the real Excel fileIf the file does not exist, the file will be created automaticallyThe table is