SQL Server

1. isnull () function Purpose: replace null with the specified replacement value. Syntax:Isnull (check_expression, replacement_value) Parameter: check_expression can be of any type. Rereplacement_value returns the expression when

ArticleDirectory How to determine which version of SQL Server 2000 is running How to determine which version of SQL Server 2000 is running Http://support.microsoft.com/default.aspx? SCID = KB;

Here is the experience of two asp upgrades. You can refer to other languages. You are welcome to discuss and Add. 1. After the database is imported, fields automatically added must be overwritten, and the length of all numeric types must be

Use isignaturekey -- Data name If exists (select * From DBO. sysobjects where id = object_id (n' [DBO]. mysp_all_isignaturekey') and objectproperty (ID, n' isprocedure ') = 1)Drop procedure [DBO]. mysp_all_isignaturekeyGo Create procedure mysp_

During database development, when the data you retrieve is only one record, the transaction statements you writeCodeSelect Insert statements are usually used. However, we often encounter this situation, that is, reading a record from a result set

Part 1ArticleMainly introducesBiIt mainly involves the raw database, data warehouse database, dimension table, fact table, and related import work. After the data is imported, it means analysis, statistics, and mining. This is all the underlying

-- ===================================================== ====== -- Author: -- create Date: -- Description: -- ==================================== =============== create procedure up_tableexists @ tablename nvarchar (50) asbegindeclare @ SQL

When installedProgramInstall to: When the installer is installing the MS data access component, the following error occurs on the screen: command line option syntax error, TYPE command /? For help Click "OK" to continue. The result is:The installer

The Unit is kilometers. Alter function DBO. fngetdistance (@ latbegin real, @ lngbegin real, @ latend real, @ lngend real) returns parameters @ distance realdeclare @ earth_radius realset @ earth_radius = 6378.137 declare @ radlatbegin real, @

SQL Server 2000 metadata application (2): Obtain the user view of the database Select   Object_name (ID) As   Object_name , User_name (UID) As   User_name ,Type As Type, crdate As Date_created From Sysobjects

Windows Server 2003 is installed on my computer. When I use SSMs, windows blue screen often occurs, and it seems that blue screen always occurs when I open a table, of course, sometimes it's okay to open the screen, sometimes it's blue screen, and I

It is troublesome to back up server data. It is difficult to back up server data manually on a daily basis. Here I will introduce a method to create automatic backup through job scheduling of SQL Server: 1. Choose Enterprise Manager> Manage> SQL

"SQL Server 2000 reporting services learning notes" (2) reportviewer sample ASP. NET Server Control   Private void page_load (Object sender, system. eventargs E){// Subject: reportviewer sample ASP. NET Server Control // Reportviewer is an ASP.

When the structures of the two datasets are the same, you can add, subtract (minus), submit, and operate the set. The following uses SQL Server as an example. Set Addition Union all (two sets are directly added, and repeated values are

After the release of lesktop open-source im, some netizens asked how to integrate the embedded im with the user system of their websites (that is, how to make the embedded im directly use the original user database of the website, instead of

In the following example (22: 20) Execute the Stored ProcedureSp_update_job. Use MSDB; Execute Sp_add_job @ Job_name = ' Testjob ' ; Begin Waitfor Time ' 22: ' ; Execute Sp_update_job @ Job_name = ' Testjob ' , @ New_name

The following experiments show that: -- Changed to simple after modifying the recovery model, you must back up the database completely. Backup   Database Northwind To Jasonbak With Format -- Change back to full Create

[Introduction] SQL Server schedules and processes tasks through worker, scheduler, and tasks. Understanding these concepts is very helpful for understanding how SQL Server works internally. Generally, the number of schedcpu instances matches the

We all know that assembly has metadata and can be "self-described ". When we experience this advantage, have we ever wondered when the information in the database is also self-described? I think SQL Server has extended attributes and SQL Server's

-- Variable declaration. The @ symbol must be added before the variable when the SQL statement declares the variable.Declare @ I int -- Assign a value to a variable. set must be added before the variable is assigned a value.Set @ I = 30 -- Declare