sql server if then else

A few days before the SQL Server in the Birch walk up public accounts see an article MS SQL SERVER2014 link MS SQL Server 2000, then on the phone swallowed looked at a probably, know is due to the Native client version of SQL, Did

Let's talk about the Views in SQL Server and SQL Server. 1. What is a view? 2. Why view; 3. order by in the view; 4. Refresh the view; 5. Update the view; 6. view options; 7. Index View; 1. What is a view? A view is a virtual table defined by a query. Unlike a physical table, the data in the view has no physical repres

Document directory 2. 1. Export data from the table to a file (using trusted connections) 2. export data from the table to a file (using Hybrid Authentication) 2. 3. Import the data in the file to the table 0. References: SQL Server BCP usage Summary BCP Utility How to import data from 6 million users to MySQL, MSSQL, and Oracle databases in a community Select into and insert into select table copy sta

Misunderstanding #13. DMV cannot be used in SQL Server 2000 compatibility mode Error There are many misunderstandings about the compatibility mode. Does the database in the compatible mode of 80 mean that it can be attached or restored to the SQL Server 2000 database? Of course not. It just means some T-

Misunderstanding #13. The DMV cannot be used in SQL Server 2000 compatibility mode Error There has been a lot of misunderstanding about compatibility mode. Does the 80 compatibility mode database imply the ability to attach or recover to a SQL Server 2000 database? Of course not. This simply means some T-

Example of deleting duplicate records in a data table in SQL Server, SQL Server [Project] The users table in the database contains the u_name and u_pwd fields. The u_name contains duplicate items. Now we need to delete duplicate items! [Analysis] 1. Generate a temporary table new_users with the same structure as the us

SQL Server uses the tree structure recursive query (infinitus classification) method. SQL server uses the Tree Structure Starting from SQL Server 2005, we can use CTE to support recursive queries. CTE is the common table expressio

SQL Server encryption and SQL Server encryption Encryption in SQL Server is hierarchical, and each upper layer provides lower protection. Instance:/**SMK (Service Master Key) is generated when

Summary of index, foreign key, and field syntax maintenance for mysql, SQL Server, and oracle databases, and SQL Server oracle Summary of index, foreign key, and field syntax maintenance for mysql, SQL Server, and oracle databases

so, did not think of its impact This parameter is a data-level option that can be set up to refer to 　　 What is the automatic parameterization of the case? In a simple parameterized mode, SQL Server automatically parameterize a adhoc SQL statement with only one execution mode, thus achieving the purpose of reusing the execution plan.What types of

SQLSERVER uses Windows authentication on the LAN to connect to another SQL server in the LAN (not a domain environment) previously, even MSDN said that connecting to another SQL server in the LAN must be a domain environment if you want to use Windows authentication. But today I found that using Windows authentication,

T-SQL is an enhanced SQL language provided by SQLServer based on the SQL language. The T-SQL provides all the features of ANSISQL and adds more features such as extended functions, system pre-storage, and program design structures. The following describes 3. the T-SQL of

SQL Server temporary table and cursor usage summary, SQL Server 1. Temporary table Temporary tables are similar to permanent tables, but temporary tables are stored in tempdb. They are automatically deleted when they are no longer used.Temporary tables can be local or global. 2 Comparison: The name of a local temporary

Yesterday and friends on the Internet talking about the application of SQL statements, my friend's remote server appears to be unable to connect the phenomenon, the problem is due to the remote server reached the maximum number of connections, in order to achieve remote reboot, so that the use of SQL Statement command

SQL Server tree query single table instance code, SQL Server single table -- TREE SQL query WITH TREE AS (-- create a virtual table SELECT * FROM sys_organiz -- specify the table to be queried WHERE organize_code = '2013' -- specify the parent node condition UNION ALL -- UN

SQL Server can specify collations in instances, databases, columns, and queries, respectively/*Module 1-working with Clollations*/--1.1 Obtain the Instance Collation from the GUI--Create a Database without specifying a specific CollationCreate Databaseunspecifiedcollationdb;GO--Use the statement bellow (code) to Verfiy, the new database inherited the Collation Useunspecifiedcollationdb;GOSelect db_name() as

not think of its impactThis parameter is a data-level option that can be set up to refer to　　What is the automatic parameterization of the case?In a simple parameterized mode, SQL Server automatically parameterize a adhoc SQL statement with only one execution mode, thus achieving the purpose of reusing the execution plan.What types of

XML is the latest data storage solution. XML gives web developers more programming flexibility than HTML. This new technology drives development institutions to try to integrate XML with their own products. Microsoft is the pioneer in taking such initiatives. When Microsoft was developing an Internet product, it was a little messy. Now it's different. Recently, a Microsoft senior employee said, "You have to give us a knife. XML is the only difference in the wound ." It may be a bit too much, but

We usually create BackupIn SQL Server, We can achieve this through the following method: Steps for automatic backup in SQL Server 2005 database: 1. Open SQL Server Management Studio 2. Start the

First, pre-installation preparation1. Download the SQL Server version, select the appropriate version under the Portal's left menu server module, because the operating system version of the server is Windows Server R2, I select the SQL