rollback tran

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,

  1. Transaction)Transactions mainly take into account the security performance and correctness of data in exceptional circumstances. For example, a transfer program has several statements that execute different functions, and now the money is drawn

I. Simple Syntax of transactions used in Stored Procedures It is very important to use transactions in the stored procedure. Using data can maintain the integrity of the data association. It is also very easy to use transactions in the stored

When executing a stored procedure, we often encounter execution timeout. If there are too many data to be processed and the modification process is complicated, use the following methods to solve the problem: Add transaction management to

A transaction is an inseparable logical unit of work. It is used as the smallest control unit to execute concurrent operations on the database system. A transaction is an inseparable logical unit of work. It is used as the smallest control unit to

Strategy a property of a transaction Transactions have ACID properties: Atomic atomicity, consistent consistency, isolated isolation, durable permanent Atomicity is that a transaction should be a unit of work, the transaction completes, all work is

Transferred from: http://www.cnblogs.com/knowledgesea/p/3714417.htmlUnderstanding Transactions and LocksTransactions: The essential tool for maintaining logical data consistency and recoverability.Lock: When multiple users access the same database

Directly cut the topic. There is A table in the table: ChenJiID, DanWeiID, Name, and ChenJi. The IDDanWeiIDNameChenJi ---------------------------- the consumer opens two connections in the query analyzer to connect A to begintrant. There is a table

Advantage: there are few fields and the addition, deletion, modification, and query functions are available. However, the query is too general. Disadvantages: 1. The classpath field defines the limit. 2. The primary key classid is not

This series of articles I saw in the sqlskill.com's PAUL blog, many misunderstandings are more typical and representative, the original from the T-SQL Tuesday #11: Misconceptions about... EVERYTHING !!, After translation and arrangement by our team,

Transaction management:A single unit of work is called a transaction, and we combine several SQL commands to form a stored procedure, a trigger, and so on, using stored procedures and triggers to manage transactions.?The basics of programming are:

--Blocking/********************************************************************************************************** Blocking: One of the transactions is blocked and other transactions are waiting for the other party to release their locks,

This section describes SQL statements, sqltransaction, and transactionscope. All examples in this section run in SQL Server 2008 and vs 2008 environments. If SQL Server 2005 is not available, the same applies to SQL Server, however, SQL se rver 2000

This section describes SQL statements, SqlTransaction, and TransactionScope. All examples in this section are run in sqlserver2008 and vs2008 environments. If sqlserver2008 is not available, the same applies to sqlserver2005, but sqlserver2000

Document directory 2.1 How does the nested transaction roll back the outermost transaction affect the internal transaction? 2.2 How about nested transactions roll back internal nested transactions? Save transaction rollback point-you can select

Transaction management:A single unit of work is called a transaction, and we combine several SQL commands to form a stored procedure, a trigger, and so on, using stored procedures and triggers to manage transactions.?The basics of programming are:

Myth #26: There is a real "transaction nesting" in SQL ServerError Nested transactions do not appear to allow transaction nesting as their syntax behaves. I don't know why anyone would write code like that, and the only thing I could think of was a

The transaction is about atomicity. The concept of atomicity means that some things can be viewed as an inseparable unit. From a database point of view, it refers to the smallest combination of one or more statements that should be executed all or

1. At the moment I just succeeded in experimenting with SQL 2008:To turn on the trace identity in the database:DBCC TRACEON (1204,-1)DBCC TRACEON (1222,-1)Both trace flags write deadlocks to the error log, but 1204 is in text format and 1222 is

Insert trigger example createtriggertri_insertonstudentforinsertasdeclare @ student_idchar (10) select @ student_0000000001beginraiserro Insert trigger example create trigger tri_insert on student for insert as declare @ student_id char (10) select @