SQL Server

SQL ServerExtended Event (Extended Events)--ArchitectureMsdn:http://msdn.microsoft.com/zh-cn/library/bb630282%28v=sql.110%29.aspxblog:http://blogs.msdn.com/b/extended_events/SQL Server Extended events have a highly scalable and highly configurable

SQL Server deadlock makes the problem that we often encounter, the deadlock of database operation is unavoidable, this article does not intend to discuss how deadlocks are produced, the focus is to resolve deadlocks. Hopefully it will help you learn

SQL Server triggersA trigger is a special type of stored procedure that differs from the stored procedure we described earlier. Triggers are triggered primarily by an event that is automatically invoked to execute. The stored procedure can be called

Original: http://www.cnblogs.com/xwdreamer/archive/2012/06/25/2562828.html bibliographyHttp://database.51cto.com/art/201009/224075.htmBodyTo successfully access data in a SQL Server database, we need two aspects of authorization: Get

Today, senior boss has a good article. It was a bit confusing for me to take this opportunity to learn.Just use the high-boss script. You need to go directly to him to find it, here is saved.Plus query optimization tag before and after comparisonYou

record them. Forget 、、、、 every useDATEDIFF function [date and time]FunctionReturns the interval between two dates.GrammarDATEDIFF (Date-part, date-expression-1, date-expression-2)Date-part:Year | Quarter | Month | Week | Day | Hour | Minute | Second

Overview of LocksI. Why to introduce a lockConcurrent operations on a database by multiple users can lead to inconsistencies in the following data:Missing updatesA, a, two users read the same data and modify it, and one of the user's modifications

-New Create TABLE [dbo]. [Bi_dim_date] (--YYMMDD [DATEF] [nvarchar] (a) null,--French date format [DateKey] [nvarchar] () null, [dim_year] [int] NULL, [Dim_month] [INT] NULL, [dim_day] [int] NULL,--quarter [Qu] [int] null, [QUCN] [varchar] (+)

Method One: The SQL Server2008 generated script can generate the export script. Select the database node for which you want to export data, click the right mouse button, and select Tasks, Generate scripts from the menu.650) this.width=650; "

The datalength () function returns a number of bytes used to manage the value, which helps to reveal some interesting differences between different data types.When the varchar type is passed to the datalength () and Len () functions, they return the

Code highlighting produced by Actipro Codehighlighter (freeware) http://www.codehighlighter.com/-->Usage: bcp {dbtable | query} {in | out | queryout | format} data file[-m maximum number of errors] [-F Format File] [-e Error file][-F First line] [-L-

Original: View SQL SERVER encrypted stored procedures, functions, triggers, views create  PROCEDURE sp_decrypt (@objectname varchar) as begin SET NOCOUNT on --csdn:j9988 copyright:2004.07.15 --v3.2 --crack byte unrestricted, applicable to

SQL Server database queries are slow for a number of reasons, and are common in the following ways:1, no index or no index (this is the most common problem of slow query, is the defect of program design)2, I/O throughput is small, forming a

First build a test sheet: CREATE table teststring (name nvarchar (100));INSERT INTO teststringValues(' Zhang San, John Doe, Harry, Caifan, Xiao Rambler, Royal Palace '); 1. Determine the number of occurrences of a character (string) in a string, the

When dealing with transactions, it is common to roll back and forth with rollback TRANSACTION, but if this is used in nested transactions, an error occurs. In SQL Server, the hierarchy of nested transactions is reflected by the @ @TranCount global

Transferred from: http://stackoverflow.com/questions/3077412/ What-is-the-difference-between-trusted-connection-and-integrated-security-in-a-c-----------------------------------------------In. Net, there are a class called SqlConnectionStringBuilder

When you operate the SQL Server database, you encounter a problem where the lock request time-out period has been exceeded. (Microsoft SQL Server, error: 1222)After looking for material to know for resource preemption, as a deadlock, kill the

Original: Row to column: SQL SERVER pivot and usage explanationIn database operations, there are times when we encounter the need to implement "row-to-column", for example, a table for a weekly income statement for a store:VARCHAR (Ten)

Objective:Before SQL Server 2005 and SQL Server 2008. If you want to encrypt sensitive data, such as financial information, wages, or social Security numbers, you must use an external application or algorithm. SQL Server 2005 introduces the ability

Mandatory SQL statement (6) Data Query and SQL statement Data Query 1. Basic Query1) rename a columnSelect name as 'name' from Table name 2) define constant ColumnsSelect = 'is 'From table name 3) top usage: percent-- In this way, you can obtain the