SQL Server

A database is organized according to a data model and holds data sets in Level two memory. This data collection has the following characteristics: As far as possible, the best way for a particular organization of a variety of application services,

There are two parameters in SQL Server, syntax:ISNULL (Check_expression, Replacement_value)Check_expression and Replacement_value data types must be consistentIf Check_expression is NULL, the Replacement_value is returnedIf Check_expression is not

Using the Sys.dm_sys_info view is often confusing to the Hyperthread_ratio column. What is the meaning of this column?Translation of an article of the foreign Great God,

--1, data table already created, Excel first row as table header--Enable AD Hoc distributed Queries:exec sp_configure ' show advanced options ', 1Reconfigureexec sp_configure ' Ad Hoc distributed Queries ', 1ReconfigureGo--Start querying dataIf

When I debug the SQL script with SSMs today, I suddenly get an error: Unable to start T-SQL debugging. Could not attach to SQL Server process on----Think of the recent computer has not changed, except yesterday in the computer created a domain, and

Create function fun_a () #标题函数, create function Fun_name () returns OUTPUT_TYPE as begin return value end;returns intAsBeginreturn 1;EndGoCreate function Fun_b () #多语句用户定义函数, create function Fun_name () returns @value table (Colum_list) as begin

1 indexes in SQL Server　　An index is an on-disk structure associated with a table or view, which speeds up the retrieval of rows from a table or view. An index contains keys that are generated by one or more columns in a table or view. These keys

Pre-Preparation:Normal table, temporary table: It has statistical information on the two sessions.Table variable: There is no statistical information.----------------------------------------------------------------------------------------------------

Some of the shortcut keys that are used in SQL Server Management Studio F5 (ctrl+x) executes the selected part of the statement, without checking the full-text execution Ctrl+l Realistic Execution Plan (estimate) Ctrl+m Show execution

The recovery model for SQL Server includes the simple recovery model, the bulk-logged mode, and the full recovery modelWhen we execute the checkpoint, we actually update the data page data in the cache to the data file.And the change of log file is

A production environment, a line of the environment, the online environment of the data problems in the production environment does not appear, so you need to restore the line database to the production environment, but every time the restoration of

Since we often encounter data export import, downgrade and restore between different versions of the database, Philo children's shoes have collected two articles.Reproduced here, I hope it will be useful to everyone. Thanks to the

There is both method to call. NET DLLs in SQL Server.The first one is to use the SQL CLR but it had a lot of limit.The second method is for use with SSIS package to call the. NET DLL. Now I'll show the process and the problem come accross with

Software bad environment: SQL Server R2 Issue 1: Database source files copied from other computers use the current computer (SQL Server) to attach the database to the following error: Workaround: Open Start → program →microsoft

Collection of methods for restoring orphaned users in a SQL Server databaseAlthough SQL Server is now moving more and more, its own approach is becoming more advanced.However, there are many orphaned users in our SQL Server relocation, Microsoft

The IP V4 address is a 3-point delimited string that sometimes needs to be processed in the database, such as determining if the IP address is valid.The usual way to think of it is to write a function, such as using CHARINDEX, substring and other

In the previous section we described how to create and use a partitioned table, with an example of placing data from different years in different physical partitions. The specific partitioning method is:1th Small table: Data prior to 2010-1-1 (not

Mainly in modeling when we added some notes to the table, column, and Sql2005 after the system table sysproperties has been discarded and replaced by sys.extended_properties .1. Modify the Table Tablecomment sectionMenu database, Edit current DBMS

After watching the garden vallen introduction SQL Prompt blog Red Gate Series three SQL Server development tool SQL Prompt 5.3.4.1 Edition T-SQL IntelliSense Analyzer complete hack + Use tutorial, combine your own use to do some supplemental

A like Chinese mismatch problem in SQL Server It's so easy to solve. [2007-9-15 14:02:00 | By: No trace of dead water] Ms-sql Server SELECT * from book where bookname like '% c