sql server if then else example

SQL Server queries table indexes and SQL Server Indexes SELECT index name = a. name , Table name = c. name , Index field name = d. name , Index field location = d. colid FROM sysindexes a JOIN sysindexkeys B ON. id = B. id AND. indid = B. indid JOIN sysobjects c ON B. id = c. id JOIN syscolumns d ON B. id = d. id AND B

Delete SA users in SQL Server Keywords: SQL Server, MSSQL, SQL As we all know, there is an account SA that is definitely a hidden danger in network security in SQL. By default, it is assigned to the fixed

The following error occurs when connecting to the SQL Server 2000 database: Network-related or instance-specific errors occur when you establish a connection with SQL Server. The server is not found or cannot be accessed. Verify that the Instance name is correct and

[Microsoft] [odbc SQL Server Driver] [dbnetlib] SQL server does not exist or access is denied. Baidu After several hours of continuous search and analysis with sogou, I finally realized the cause. Connect to the SQL database,Ip_connstr = "driver = {

SQL Server data insertion performance note, SQL Server Insert NOTE I haven't paid much attention to SQL Performance for a long time. Because the recent project neither has tens of millions of massive data nor has too many performance requirements, it does not have to work ha

SQL Server Migration Assistant v6.0 for MySQL Support for Sybase's Microsoft SQL Server to move small help hand (Version 6.0) Microsoft SQL Server Migration Assistant v6.0 for Sybase S

, that is, SQL Server retains row space according to the column definition size, rather than the actual characters in the character. For example, if a column is defined as CHAR (25), SQL Server reserves 25 characters in the row regardless of the length of the stored string.

Tags: oracle error message generation SQL statement blog Data Conversion 9.png1. System Version Information System:windows flagship Service Pack1 Kettle version:6.1.0.1-196 JDK version:1.8.0_72 2. Connect to the database This instance uses global variables when connecting to the database. 2.1 Create a new transformation: After spoon startup, click CTRL + N to create a new transformation 　　 2.2 In the new conversion interface, right click on the DB con

smaller the value, the better. The smaller the value, the higher the selection. The more suitable the index is. For example: Select * from WBK_Goods_Info where COP_G_NO = '201312' There are only one record in the WBK_Goods_Info table that meets this condition, and the entire data table has 100000 records. Therefore, the query selectivity is 1/100000, which indicates a very high selectivity, in this way, you can use indexes to find data efficiently. I

not big. The function itself has a return value,However, the stored procedure has no return value, and can be output by setting output parameters.How to call user-defined functions in SQL Server Stored Procedures A function that returns a single value. It can be used as a variable, for example, select dbo. function Name (parameter 1, parameter 2 ,...) from... wh

Migration of login accounts and database users in SQL Server, SQL Server 1. Create a login name for SQL Server Authentication and map it to the database. For example, if you create a

(stringFileInfoinchfilelist) { stringsqlConnectionString ="data source=.; Uid=sa; [Email protected];d atabase=21744new"; //sqlconnectionstring = "Data source=localhost;uid=21744;pwd=123456789;database=21744";//Public networkFileInfo file =NewFileInfo (FileInfo); stringScript =file. OpenText (). ReadToEnd (); SqlConnection Conn=NewSqlConnection (sqlconnectionstring); Server server=N

SQL Server File Operation Method, SQL Server In the master database, SQL Server provides system-extended stored procedures. Some stored procedures start with xp _ and are used to process operating system files. 1. Determine whethe

SQL Server database synchronization question sharing [unfinished, To be continued] (1) SQL Server database synchronization problem sharing (2) --- operation steps [unfinished, To be continued] (1)ModifyFTPConnection During data synchronization, the publisher needs to generate a data snapshot and save it in a lo

Label:In 2008, the option to block saving changes that require the table to be recreated is added. Symptoms are "blocking" you when modifying the table structure.The solution to the " prevent saving changes that require re-creation of tables " in SQL Server"is the main thing we want to introduce in this article: when we have finished building the table with SQL

Registered servers window: You can use SSMs to register multiple servers and connect them, so that DBA can manage multiple local or remote servers in one environment. The registered servers window is invisible by default. to display it, click the View menu to select the registered servers option, or press the shortcut key CTRL + ALT + G. Right-click any location in the registered servers window, open the context menu, register a new server throu

1. "SQL server does not exist or access is denied" This is the most complex. There are many causes of errors and there are many aspects to check. Generally, there are several possibilities: 1. incorrect spelling of the SQL server name or IP address2. The server network confi

SQL Server Stored Procedure (to) and SQL Server Stored ProcedureSQL Server Stored Procedure Stored Procedures in Transact-SQL are very similar to methods in Java. They can be called repeatedly. After the stored procedure is execut