commit tran

Tag: Value copy disk -- action prediction specified job Deletion Trigger: A trigger is a special type of stored procedure that automatically takes effect when a language event is executed. SQL Server includes three common types of triggers: DML

1. How to lock a row in a table Execute in connection SET transaction isolation level Repeatable read Begin tran Select * From tablename with (rowlock) Where id = 3 Waitfor delay '00: 00: 05' Commit tran If you execute Update tablename set

Alter proc proc_updateinfomation (@ c_id varchar (50), @ State int output) As Begin Declare @ Tran varchar (50) Set @ State = 0 Begin Tran @ tran Delete from companyinfo where c_id = @ c_id If @ error0 or @ rowcount> 1 Begin Rollback Tran @ tran Set

Set ansi_nulls onGoSet quoted_identifier onGo-- ===================================================== ======-- Author: -- Create Date: -- Description: -- ===================================================== ======Create procedure -- Add the

A transaction is a unit of concurrency control and a sequence of user-defined operations. These operations are either done or not done. They are an inseparable unit of work. Through transactions, SQL Server can bind a set of logical operations to

Asp tutorial. net mssql stored procedure output parameter callSimplest syntaxCreate proc pAsSelect * from tbConcepts, advantages, and syntax of SQL Stored ProceduresBefore learning the program process, let's first understand what a stored procedure

A transaction is a mechanism and an operation sequence. It contains a group of database operation commands. All the commands will be used as a whole, and they will be submitted or revoked together to the system. The requests will either be executed

A transaction (Transaction) is used to set the number of consecutive program operations that must be performed successfully, otherwise you must immediately reply to a state that does not perform any program operationsThere are four properties in the

1. Introduce Now the site with the increase in traffic, a single server can not afford a huge amount of traffic, there is no convenient way to solve this problem, the answer is "there"! For example, set up a server farm, to carry out a balanced

In developing Web applications, we often need to process drives, folders, and files in a file system, such as collecting information about drives, creating, adding, moving, or deleting folders and files. A new set of the FSO (File system object)

Query table name in 1.SQL Server 2000 Often encountered some forget the table name, at this time only remember the approximate, at this time can be queried system table sysobjects find the table name you want, if you want to find the name of the

First the code, you can see the SQL statement to remove duplicate records, get duplicate records Copy Code code as follows: ALTER procedure [dbo]. [Proc_itemmaster_getunique] @PAGEINDEX int, @uid int, @itemnumber varchar (50) As

transactions and locks in SQL Server The transaction is all about Atomicity (atomicity). The concept of atomicity refers to the idea that some things can be treated as a unit. From a database standpoint, it refers to the smallest combination of one

1. What is a transaction: a transaction is an indivisible working logical unit that is used as the smallest control unit when performing concurrent operations on a database system. All of the database operations commands he contains are either

Sybase configuration Parameters sp_configure ' max online engines ', 4 Go --Configure the number of boot CPUs sp_configure ' number of engines at startup ', 4 Go --Configure Maximum memory count sp_configure ' max memory ', 2097151 Go --Allocating

When a transaction is used in a stored procedure, if there is no Try...catch statement, when set XACT_ABORT on, if an error occurs, all SQL operations are automatically rolled back after the batch statement is completed. When set Xact_abort off, if

For the various errors in SQL, and orphaned transactions in T-SQL programming must pay attention to the trap of isolated transactions, to avoid wasting or isolate resources, Microsoft publicly announced Sqlserve the next version of Yukon will have

The garden has a very good article about SQL Server transaction isolation, feeling a lot of the introduction from the concept, for those beginners, see the touch of understanding is profound, so no longer repeat, the emphasis is on the example

Programming guidelines: (Simply speaking) The data is logically placed in a piece Business logic on a piece of Interface as a interface Minimum network transport －－－－－－－－－－－－ 1, the data logically put in a piece For example, table: History

Data | database | Data synchronization Using database replication technology to realize data synchronization update The concept of replication Replication is the technique of copying a set of data from one data source to multiple data sources, and