SQL Server

1. Write scalar value function iconvert2stringCREATE FUNCTION iconvert2string (@N int,@f INT) RETURNS varchar (ten) Asbegindeclare @M intdeclare @L0 intdeclare @CH VARCHAR (10) DECLARE @ST VARCHAR () Select @CH = "Select @ST =convert (VARCHAR), @N)

The database contains many tables and data, and sometimes you need to create a script to export the table structure along with the dataHere's how:1. Right-click the database and select Tasks---> Generate script2. According to the requirements,

How does SQL Server use a CTE to sort by sub-query?Requirements: Identify recently changed customer information (sorted by last change time, from Systemlog table Logdatetime field)DescriptionCustomer: Client Information FormSystemlog: System Log

The day before yesterday's project, just took over, for the module is not very familiar with, there is a module, involving 4 tables, of which the main table there are two, as long as the clear on all return to the "peace". Module requirements:

First make sure that the two machines are on the same LAN, and then open the Configuration tool →sql Server Configuration Manager to configure, change the TCP/IP (IP1,IP2) TCP port of the MSSQLSERVER protocol to 1433, enabled to Yes. Server name :

One, check the configuration, if ' Show advanced options ', ' Ole Automation procedures ', ' Ad Hoc distributed Queries ' config_value and Run_value is not 1, Two scripts are required to execute.Second, execute the script, open SQL Server access

Transferred from: http://www.cnblogs.com/chenmh/p/3780221.htmlClustered indexOverviewThe concept of index and table architecture has always been the discussion of a lot of topics, including the table of various storage forms is the focus of

Team work to design a system data model, after the creation of PDM, table, view, Store procedure and so on have been created, and create a number of schemas to facilitate the management of these database objects, but Table, view, column and other

MSSQLSERVER data operations between different server databasesMethod 1:--Create a linked serverexec sp_addlinkedserver ' itsv ', ' ', ' SQLOLEDB ', ' Remote server name or IP address 'exec sp_addlinkedsrvlogin ' itsv ', ' false ', NULL, ' username ',

Overview of LocksI. Why to introduce a lockConcurrent operations on a database by multiple users can lead to inconsistencies in the following data:Missing updatesA, a, two users read the same data and modify it, and one of the user's modifications

A stored procedure can be used to improve the efficiency of a database query because it is compiled beforehand, stored in memory, and does not have to be newly compiled before each execution, so it is highly efficient. A stored procedure is a set of

　　SQL Server index structure and its use (i)FreedkFirst, understand the index structure in a comprehensible senseIn fact, you can interpret an index as a special kind of directory. Microsoft's SQL Server provides two types of indexes: Clustered

1. The syntax of the stored procedure is variousegDELIMITER $$CREATE PROCEDURE TEST_P_ADD9(P_name VARCHAR (100),P_test VARCHAR (100),P_age INT,Out O_newid INT)BEGININSERT into Table_test (f_name,f_test,f_age,f_date) VALUES (P_name,p_test,p_age,now ()

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How do i insert Chinese into SQL Server 2005?after inserting the Chinese data into SQL Server 2005, the result of the query is??? and the Chinese is not displayed at allWorkaround:1 about the database collation, will sql_latin1_general_cp1_ci_as

This article by show according to Lin Feng to provide friendship sponsorship, starting in the mud row world. Server, because the business uses a database that is SQL Server 2005, it is necessary to back up the database first. Backups can be broken

Definition of the primary foreign key in SQL Server:1.Create Table int Primary Key not NULL into Values (Ten, 'IT '), (+,' Finance'), (+, 'engneer ')Create Table int Primary Key not NULL int Foreign Key References Dept (DEPT_NO))The above

The following SQL statement takes Northwind as an example1. Do not use functions and expressions on the left side of the "=" in the WHERE clause because the system cannot apply the index in a function or an expressionSELECT * from Customers WHERE

Is Order by sorted by a primary key not specified in SQL? sqlorder If Order by is not specified in SQL, is the sorting based on the primary key? The answer is not necessarily. For example: Queries the AttendanceEmpRank table. The primary key is

Single quotation mark nesting in SQL statements (direct nesting must be avoided) and SQL nesting In SQL statements, we will inevitably use single quotes for nesting, but direct Nesting is definitely not acceptable. In java, it is also impossible to