set autocommit

There are two main ways to handle MySQL transactions. 1, with Begin,rollback,commit to achieve Begin a transaction ROLLBACK TRANSACTION Rollback Commit TRANSACTION Confirmation 2, directly with the set to change the MySQL automatic submission

Acid:atomic, consistent, Isolated, durable The store program provides an excellent mechanism for defining, encapsulating, and managing transactions. 1,mysql Transaction Support 1 The MySQL transaction support is not tied to the MySQL server itself,

Reference Manual | Chinese InnoDB chinese reference Manual---Dog dog (heart sail) Translation 8 InnoDB transaction Mode and lock In InnoDB transaction mode, the goal has been to combine the best properties of a multiversioning database to

Database Connection Pool Connection pooling is a common technique for resource reuse. With connection pooling, it is possible to pool the resources that have been created with greater overhead and to cache them in a pool that needs to be taken out

The biggest difference between InnoDB and MyISAM is two points: one is support transaction (TRANSACTION), and the other is row-level lock. There are many differences between row-level locks and table-level locks, and the introduction of transactions

How to add LocksSyntax for locking tables:LOCK TABLESTbl_name [as alias] {READ [LOCAL] | [Low_priority] WRITE}[, Tbl_name [as alias] {READ [LOCAL] | [Low_priority] WRITE}] ...Unlock syntax:UNLOCK TABLESThe InnoDB storage engine provides row-level

First, the data engine InnoDB with Begin,rollback,commit to commit the transaction, begin the transaction after the error occurs ROLLBACK TRANSACTION rollback or no error on commit transaction commit confirmation completed.Start transaction begins

I read a foreign article on the Internet, which introduced the tips for improving Lucene indexing speed and shared it with you. First, let's take a look at the main factors that affect the index: MaxMergeDocs this parameter determines the number of

I have discussed the problem of Mysql transaction processing with my colleagues today. I feel that I have learned a little about it, but I still don't understand it if I haven't actually used it. Transaction processing is to treat a series of

Www.beijibear.com? Aid463 transactions must meet four conditions (ACID): atomicity (Autmic), Consistency (Consistency), Isolation (Isolation), and Durability (Durability) atomicity (Autmic ): the transaction is being executed. "Do not do it, or do

Copy codeThe Code is as follows:Mysql_query ("set autocommit = 0 ");$ List_one = $ db-> fetch_first ("select * from prizes where id =". $ id. "for update ");$ Db-> query ("DELETE from prizes WHERE id =". $ list_one ['id']);Mysql_query ("commit ");

The following section describes how to solve the Mysql data rollback error. For more information, see There are two main methods to process MYSQL transactions.1. Use begin, rollback, and commit to implementStart a transaction Rollback transaction

Recently, there was a project requirement to ensure that multiple machines did not obtain the same data. later, we found that the Mysql Query statement used select .. forupdate often leads to database deadlocks. the following small series will

Ecshop seconds when the inventory is reduced to less than 0 after the inventory is updated, the inventory is checked, and if the inventory is negative, the rollback of the transaction is performed.Begin ();//Start a thing processing start$sql=

Today, database operations are increasingly becoming the performance bottleneck of the entire application, especially for Web applications. Concerning the performance of the database, this is not just something that DBAs need to worry about, but it

Start transaction, commit, and rollback syntax Start transaction | begin [work] Commit [work] [and [no] Chain] [[No] Release] Rollback [work] [and [no] Chain] [[No] Release] Set autocommit = {0 | 1} The START transaction or begin statement can start

Test Database: MySQL InnoDB target database table student (ID, int; Name, varchar) SQL combo 1 Start transaction; Start transaction; Insert into student values (1, "Hello, world "); Commit; Insert into student values (2, "Goodbye, world "); Rollback;

# Create a table Dept   Create Table dept (/* Department table */Deptno mediumint unsigned not null default 0,Dname varchar (20) not null default "",Loc varchar (13) not null default "") Engine = MyISAM default charset = utf8;   # Create table emp

PHP and MYSQL transaction processing and PHPMYSQL Transaction Processing /*There are two main methods to process MYSQL transactions.1. Use begin, rollback, and commit to implementStart a transactionRollback transaction rollbackCommit transaction

1. mysql transactions In MYSQL, only INNODB Data Tables support transaction processing. There are two ways to start a transaction: (1)Use begin, rollback, and commit to implement Copy codeThe Code is as follows: begin starts a transaction Rollback