commit tran

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

Original: SQL 2014 new features-Delayed durabilityACID is the basic property of a database. D refers to "persistence": As long as the transaction has been committed, the corresponding data modification will be saved, even if there is a power outage,

1. Change all the global temporary tables in the system to a local temporary table, or the concurrency will raise the object already existing problems, do not use # #要用 #.2.int can not be written as id = ' 1 ', such as SELECT * from A where id= ' 1 '

Characteristics of a transactionAtomicity: Either all executes, or none of them executes.Consistency: When a transaction completes, all data remains in a consistent state.Isolation: A concurrent transaction either modifies the state before another

Problem Description: A basic information table, with more than 30 tables in the system, there is a foreign key relationship, when the basic data to delete, you need to determine whether has been used, if used to change the flag bit, if not used to

asp.net| data Many database operations need to be transacted, and there are roughly 3 levels of transactions under ASP.net: (1) Transaction at the level of the stored procedure (2) Ado.net-level transactions (3) asp.net transaction at the page level

If you have to be careful when you want to perform data churn in production, you can use transactions to verify in advance whether your own SQL is what you expect. Especially if there is a problem with the where condition of the update, the new

Understanding Transactions and LocksTransactions: The essential tool for maintaining logical data consistency and recoverability.Lock: When multiple users access the same database resource, a mechanism for the priority authority management of access,

If two threads modify the same record in the database at the same time, it causes the latter record to overwrite the previous one, causing some problems.For example:A ticketing system has a number of votes, the client every call to the ticket method,

Http://www.cnblogs.com/Kymo/archive/2008/05/14/1194161.htmlLet's take a look at the SQL Server Online Help related instructions begin Transaction: marks the starting point for an explicit local transaction. BEGIN TRANSACTION The @

1.try Catch Personal understandingA try catch is a block of statements that SQL uses for error handling, and when we write SQL statements (usually when we write more complex stored procedures), using try catch appropriately captures the error

This Monday night, received a database mirroring suspend and synchronizing state to switch back and forth the alarm, see this error, in fact, quite common.Our repair steps are generally as follows:1. ALTER DATABASE * * * SET PARTNER RESUMEIf this

(1) Stored procedures[1] Creating a stored procedure (no parameters)CREATE PROCEDURE ProtestaAsSELECT * FROM TestA--Modify the stored procedure (with parameters as output)Alter PROCEDURE Protesta@LastName varchar = NULL outputAsIf @LastName is

The stored procedure of SQL statement copying does not have USEmastergoIFEXISTS (SELECT * FROMdbo. sysobjectsWHEREidObject_id (N [dbo]. [sp_copyProce]) ANDObjectproperty (id, NIsProcedure) 1) DROPPROCEDURE [dbo]. [sp_copyProce]

In this tutorial, let's take a look at the SQL Server transactions, exceptions, and cursors. I hope this will help you. 1. Transaction features a transaction consists of several T-SQL commands, and all the commands last night a whole submitted to

Replication is a technology that copies a set of data from one data source to multiple data sources. it is an effective way to publish one copy of data to multiple storage sites. With the replication technology, users can publish a copy of data to

SQL Server database trigger Security Risks Trigger permission and ownership By default, the create trigger permission is granted to the table owner, sysadmin fixed server role members, db_owner, and db_ddladmin fixed database role members who define

How can I clear the Sybase master database logs when they are full? You can manage the master database by using the following methods. If you do not have enough space, you can consider resizing the master database. 1. In simple cases, dump trans

Mysql + php database operations Class DbQueryForMysql {/*** Maximum number of records returned by the select Method*/Const max_row_num= 1000; /*** Data Query Result set object* @ Var object $ dataSet*/Public $ dataSet = NULL; /*** Data source object*

-- Delete the table use [20130823_Recource] godroptablemy_table1, my_table2, My_table3 -- create the table use [distinct] goif (exists (select * fromsys. objectswhere) Then (Idintprimarykeyidentity (1) -- Delete the table use [20130823_Recource] go