SQL Server

General countersCollects server performance information for operating system servers, including processor, disk, network, memoryProcessor Processor1.1% Processor time refers to the percentage that the processor uses to perform non-idle threads. This

Original: Checksum features in SQL Server 2005Go from herePage checksum is a new feature of SQL2005 that provides a powerful mechanism for detecting IO damage than torn page detection. The following is a detailed description:Page CHECKSUM:During the

Transferred from: http://blog.sqlauthority.com/2010/05/14/sql-server-find-most-expensive-queries-using-dmv/The title of this post was what I can express here for this Quick blog post. I was asked in recent Query tuning consultation project, if I can

ObjectiveAn earlier article introduced indexes to improve query performance in a database, which is just the beginning. Perhaps assuming a lack of proper maintenance, index the performance of your previously established and even become a

Database mirroring is a software-based solution for database high availability. It maintains two identical copies of a database, each of which is placed in a different instance of the SQL Server databaseOverviewDatabase mirroring is a software-based

No need to modify entities and configurations, use concurrency control consistent with SQL Server in MySQL. Modifying the rowversion type is not advisable, and modifying to timestamp is not feasible. SQL Server rowversion generates a string of

written in front of the crap : The index problem has been a cliché, although it is often said, but as I have not used the index (very scary bar), I as a MS-BI implementation engineer incredibly useless index, speak naturally not emboldened. Prior to

IntroductionThe addition of AlwaysOn in SQL Server2012 is a new, increased availability solution. Prior to AlwaysOn, SQL Server already had high availability and data recovery scenarios such as database mirroring, log shipping, and failover

Transferred from: http://www.cnblogs.com/zhijianliutang/p/4190669.html Conceptual understanding About statistics in SQL Server, as explained in Books Online Query optimization statistics are objects that contain statistics related to the

Temporary tables and table variables can play a "temporary" role, so what are the main differences between the two?This is not discussed here, as well as the global temporary table, the session temporary table these, the main record of the

Tag:sql    Modify file name     get file directory    ren   xp_cmdshell     declare @cmd nvarchar (a) Declare @messageid nvarchar (declare @serialid nvarchar) declare @oldFileName nvarchar ($) Declare @fileName nvarchar ($) Declare @filePath

A stored procedure in Transact-SQL, very similar to a method in the Java language, can be called repeatedly. After the stored procedure executes once, the statement can be cached so that the statements in the cache are used directly at the next

Not much to say, the explanation is followed by the complete code, which is used to spell the values of the rows of the string fields into a large string, which is what is commonly said Concatsuch as the following table Dict Id

Original: SQL Server full, differential, and transaction log backup and restore (script and GUI implementation) [original]A Scripts for full backups, differential backups, and transaction log backups--Full backup DatabaseBACKUP DATABASE to DISK = '

Start from Create By using the explicit CREATE INDEX command As an implied object when creating a constraint Implicit indexes created with constraintsAn implicit index is created when you add one of the following two constraints to

In fact, we've been using SQL Server's connection pool. In the connection string, pooling is enabled if connection pooling is enabled and the default value is true.The two important parameters related to connection pooling are min pool size and max

This is a case of last week: The problem caused by the upgrade of the existing hardware, but also triggered a more serious bug, is disastrous, but fortunately, in a chain of problems arise, there is no manual error (this is often the highest risk in

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Method for querying the last Rebuild time of SQL Server Index, sqlrebuild A friend has a Job that usually stops executing a Rebuild Index and asked me if I can check which indexes have been rebuilt. We thought that Sys. index or Sys. objects would

SQL Server trigger details, SQL Server trigger Trigger is a method provided by SQL server to programmers and data analysts to ensure data integrity. It is a special stored procedure related to table events, its execution is not called by a program,