set autocommit

mysql| Reference | Reference manual | Chinese MySQL 4.1.0 chinese reference manual---dog (heart sail) Translate MySQL Reference Manual for version 4.1.0-alpha. 6.7 MySQL Transaction and locking command 6.7.1 begin/commit/rollback syntax By

There are two main ways to handle MySQL transactions.1, with Begin,rollback,commit to achieveBegin a transactionROLLBACK TRANSACTION RollbackCommit TRANSACTION Acknowledgement2, directly with set to change the MySQL automatic submission modeMySQL is

Mysql Series Articles Home===============Tips: Before reading this article, it is best to read this article (MySQL lock mechanism-line lock) articles ~In the previous article, we saw that the InnoDB default row lock makes it possible to operate on

øfunction functionFunctions are much more useful, and are generally used after the SELECT query statement and the WHERE condition statement. According to the result returned by the function,Can be divided into: multi-line functions and single-line

PHP and MySQL transaction processing/*There are two main ways to handle MySQL transactions.1, with Begin,rollback,commit to achieveBegin a transactionROLLBACK TRANSACTION RollbackCommit TRANSACTION Acknowledgement2, directly with set to change the

Semi-consistent IntroductionFor those familiar with MySQL, or have seen InnoDB source of friends, may have heard of a fresh noun: semi-consistent read. What is semi-consistent read? The following paragraph, excerpt from the semi-consistent read

Dear Mr. Sun:The problems I encountered in my MySQL study were organized as follows:Question 0:Do I need to set autocommit=0 when opening a transaction with start transaction?A: Not required. Autocommit=0 means not to commit a DML operation, but

Original address: http://blog.sina.com.cn/s/blog_4c197d420101awhc.htmlA transaction is the execution unit of a DBMS. It is made up of a limited number of database operation sequences. But not any database operation sequence can be a transaction. In

MySQL transaction processing (the engine of the table must be INNODB/BDB)There are two main types of two methods: the first is recommended1. Using Begin,rollback,commit to achieveBegin a transactionROLLBACK TRANSACTION RollbackCommit TRANSACTION

----1. Compile and install Percona-xtrabackupYum install cmake gcc gcc-c++ libaio libaio-devel automake autoconf bzr \Bison Libtool Ncurses-devel zlib-devel libgcrypt-develwget

More locks have been dealt with in recent times, including lock waits that cause business connections to accumulate or time out, deadlocks cause business failures, and so on, which can have a serious impact on the business, and users who have no

Official Document Description :Http://dev.mysql.com/doc/refman/5.5/en/commit.html1.autocommit only available for InnoDb Data Sheet ;2. the default is automatic submission , can be queried by the statement : SELECT @ @autocommit;3.SET autocommit

Auth:jindate:20140507First, transaction controlBy default, MySQL is autocommit (autocommit), and if you need to commit and rollback a transaction through explicit commit and rollblack, you need to start the transaction with explicit transaction

Preface: The previous article on the transaction processing of the post did not write clearly, read it is very obscure, difficult to understand, so there are some information to help understand, forgive me!About MySQL transaction processing learning

 MySQLAdvanced Operations (bottom)V.MySQL preprocessing statements1 , setting up preprocessing stmt , passing a data as where the judging conditionsPrepare stmt from "SELECT * FROM table_name where ID >?";2 , set a variableSet @i = 1;3 , execute

When a command is executed in MySQL, it is usually directly determined to commit. This means that the user does not have to be aware of the matter, and all commands will be automatically commit. In particular, when the storage engine is MyISAM, it

MySQL supports table-level locking of tables for the MyISAM and memory storage engines, row-level locking of tables in the BDB storage engine, and row-level locking of tables InnoDB the storage engine. By default, table and row locks are

This example describes the MySQL pressure test script, shared for everyone to reference. Specifically as follows: CREATE TABLE Dept Copy Code code as follows: CREATE Table Dept (/* Department Table * * Deptno mediumint UNSIGNED not

1. Query help? Contents2. Using the synthesized hash value, separating the blob or text3. Currency use fixed-point number (decimal or numberic)4.sql_mode?5.order by rand () limit 1000;6. Optimize Show status like ' Com ' com_select com_insert etc

One, MySQL affairs Only InnoDB types of data tables in MySQL can support transaction processing. There are two ways to start a transaction (1) using Begin,rollback,commit to realize Copy Code code as follows: Begin a