SQL Server

The concept of an indexThe purpose of the index: our data query and processing speed has become a measure of the success of the application system standards, and the use of indexes to speed up data processing speed is often the most commonly used

Have friends often find their own database of all the content to insert some code, if you want to record a table to delete, too much trouble, the following I found in the online can be bulk Delete method, in fact, the batch to replace the malicious

1. Try to avoid null values for the field in the WHERE clauseA null value judgement on a field in the Where clause causes the engine to abandon using the index for a full table scan. Such as:SELECT ID from T WHERE num is NULLYou can set the default

What exactly is the data type uniqueidentifier in SQL Server? This type is typically used as a primary key and can be used to generate a unique value using the NEWID () of the SQL syntax.What I want to ask is, is this value a long

SQL Server transaction log unexpectedly increases or fills up the processing methodTransaction log files transaction log file is a file that is used to record database updates, with an extension of LDF.In SQL Server 7.0 and SQL Server 2000, the

Sometimes the need to export data from SQL Server to other departments may be correlated or analyzed, which is of course very simple for SSIS, but many times it takes a lot of time to simply export the data and create an SSIS package that makes a

used a SqlBulkCopy class.Core Code AnalysisCode I haven't tested yet. stringExcelconnectionstring =string. Format ("Provider=microsoft.ace.oledb.12.0;data source={0}; Extended Properties=excel 8.0", path); //Create Connection to

I. Defining stored ProceduresThe goal is to keep all the relevant information for the current table in a specified table.CREATE PROCEDURE Get_tableinfo asIf not EXISTS (SELECT * from dbo.sysobjects WHERE id = object_id (N ' [dbo].[ Tablespaceinfo] ')

For load balancing, the author often touches the load balancing mechanism of Oracle. Below we focus on how SQL Server 2005 is load balanced, interested friends can refer to the next haThe size of the internet increases every 100 days, and customers

Method One:Declare @max integer, @id integerDeclare cur_rows cursor Local for select main field, COUNT (*) from table name Group by main field having count (*) > 1Open Cur_rowsFetch cur_rows into @id, @maxWhile @ @fetch_status =0BeginSelect @max =

First of all, I am just a programmer, not a professional DBA, the following article is written from a problem solving process, rather than the beginning to give you a correct result, if there is something wrong in the text, please correct the

The original: Anatomy of SQL Server seventh Orcamdf features overview (translation)Anatomy of SQL Server seventh Orcamdf features overview (translated)http://improve.dk/orcamdf-feature-recap/It's been about four months since I first introduced my

Case Environment:Server A system: Windows Server 2000Database version: Microsoft SQL Server 2000-8.00.2282 (Intel X86)Server B System: Windows Server 2003Database version: Microsoft SQL Server 2005-9.00.5000.00 (Intel X86)The developer wants to link

When a user changes the table structure in SQL Server 2008 Enterprise Manager, you must delete the original table and recreate the new table to complete the table changes, and if you forcibly change the following prompt: Save changes are not allowed.

Common field type selection1. Varchar/nvarchar data types are recommended for character types2. Money data type is recommended for monetary value3. Scientific counting recommended numeric data type4. Self-growth logo recommended to use the bigint

http://javamao.iteye.com/blog/625404JS connects SQL Server for querying

Just installed SQL Server database, but in the myeclipse to add and delete data to change the database IP address can not connect the problem, after looking to find the problem. The specific solutions are:1. Open Configuration Manager for SQL Server2

Source: Use SQL statements to find stored procedures, triggers, functions, etc. that contain a keyword (MS SQL SERVER only)The first approach: querying using system tables--replace text with the one you want to find. Select name from sysobjects o,

April 28, 2009Top steps to optimize data access in SQL Server:part I (use indexing)June 01, 2009Top steps to optimize data access in SQL Server:part II (re-factor TSQL and apply best practices)June 08, 2009Top steps to optimize data access in SQL

Analysis of performance problems caused by connection with table-valued functions Table value functions SQL Server provides functions similar to other programming languages, and functions are typically encapsulated by code and return values. In SQL