SQL Server

function of window functionWindow functions operate on a set of values, do not need to group the data by using the GROUP BY clause, and can also return the columns and aggregate columns of the underlying row in the same row. window functions,

GO-- =============================================--Author: --Create Date: --Description: -- =============================================CREATE FUNCTION [dbo]. [Getordervalue](--Add The parameters for the function here@v VARCHAR (50))RETURNS

Registers the user with SQL Server, enters the registration information through the page, stores to the database. Form action="Zhuche.jsp" method="POST" onsubmit="returnReg (this); ">Div ID="Div2"> P Style="Margin-left: 30px ">IMG

Delete the table containing the specified stringCREATE PROCEDURE Sys_deletetablebytablename (@bianliang varchar (100))AsBeginDECLARE @biao varchar (+), @sql varchar (1000)Set @sql = '% ' [email protected]+ '% 'Declare c cursor for select name from

First, create a new test table CREATE TABLE [dbo]. [Users] ([ID] [int] IDENTITY (*) Not NULL,[NAME] [Char] () not NULL,[Creattime] [DateTime] Not NULL) on [PRIMARY]Delete the default clustered index and create a new nonclustered index on the name

This blog post briefly describes the locks used in an INSERT statement in SQL Server.Preparing DataFirst we create a table table_1, which has two column IDs (bigint) and value (varchar), where the ID establishes the primary key.CREATE TABLE

Because of business splitting, the database is split into two roles: Summary database (Master, head node database), Child node Database (Compute node, compute child node database) In this way, the design to the child node access to

Add the settings for the database multi-field composite primary key.First, a table cannot have more than one primary key. But there are multiple fields that can be combined into one primary key, which is why sometimes the table has multiple fields

  backgroundWhen we execute SQL query statements, we automatically add such an identity to the table name,So why would you add the dbo? What is dbo?  about dbo? Definition　　The DBO (dbo----database owner) is a user with implied permissions to

Objective:This chapter focuses on the compression of shrink logs and tables.Shrink log files-- Useexec sp_spaceusedStatement to view the database size-- Right-click Database Properties-- View Options-- set the recovery mode to simple-- Right-click

Open the folder that contains the database file that you want to attach, which is the same folder as the file that has the. mdf extension, as shown in: Right-click the MDF file and select Properties, as shown in: Click the Security tab as

The concept of stored proceduresStored procedure procedure is a set of SQL statements that are compiled to complete a particular function, stored in a database, and executed by specifying the name of the stored procedure and giving parameters.Stored

Phase 1: Exercise--statistics on the number of guests staying in a certain room typeRequirements Descriptionuse stored procedures to count the total number of guests staying in a given room typeTips:The input parameter of the stored procedure is the

Personal experience, in the Internet to find a connection to the SQL Server database method, or is not good to find, most of them are copied a person, and this person's write not all, hehe, first introduce my method of connection. If you are using

SQL Server version 2008r21. Download the latest MySQL ODBC driver from MySQL website: http://www.mysql.com/downloads/connector/odbc/, the version I downloaded is 5.3 Whether it is 32-bit or 64-bit, the first down, Standby 2, the installation of the

SQL Server---Data type conversions during queryThe first two days in the maintenance of a city Talent service Center personnel file Management system, found this problem the new file number rule is the date + has the file maximum number +1 (six bits,

Requirements: Two identical tables, distributed on two server databases, now in one table, view the contents of the two tables and sort the IDs1: In the local database Query Analyzer, run the following two-segment statement:--Create a linked

1. Forcing a column in the database to be changed to case -sensitive recognitionFor example, to modify a table: userPWD14 column in tb_testtable400alter TABLE tb_testtable400alter COLUMN userPWD14 nvarchar (+) COLLATE chinese_prc_cs_as2. Specify

Tags: SQL server/mssql server/Database/dba/High Performance solutionOverviewEnvironment:Domain server: Windows Server R2 sp1,192.168.2.10dns:192.168.2.10CLU11, Windows Server R2 SP1, 192.168.2.11,sql server Enterprise (64-bit)CLU12, Windows Server R2

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