innodb tables

-- General steps to optimize SQL -- 1. Learn the execution frequency of various SQL statements through show status and application features/* provide server status information through show status, you can also use the mysqladmin extended-STATUS

1. To obtain the lock wait condition, you can analyze the table lock contention on the system by checking the table_locks_waited and table_locks_immediate status variables: mysqlshowstatuslikeTable %; + tables + ---------- + | Variable_name ?????? |

Introduction to InnoDB and MyISAM: This is the default type. It is based on the traditional ISAM type, and ISAM is the abbreviation of IndexedSequentialAccessMethod (sequential access method with indexes, it is a standard method for storing records

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

MySQL common SQL optimization statement bitsCN.com MySQL common SQL optimization statements insert data in large batches. 1. for tables of the Myisam type, you can import a large amount of data quickly using the following methods. Alter table

Advantages and differences between mysql data storage engine InnoDB and MyISAM: this is the default type, which is based on the traditional ISAM type, ISAM is the abbreviation of Indexed Sequential Access Method, which is a standard Method for

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

What is the difference between MySQL storage engine MyISAM and innoDB? how do you select these two types in a specific project ?, MyISAM: this is the default type. it is based on the traditional ISAM type. ISAM is short for

(1) to obtain the lock wait condition, you can analyze the table lock contention on the system by checking the table_locks_waited and table_locks_immediate status variables :; + -------------------------- + ---------- + | Variable_name | Value | + --

Periodic analysis Table ANALYZE [Local | No_write_to_binlog] TABLE tbl_name [, Tbl_name] Use this statement to parse and store the keyword distribution for a table. During profiling, a table is locked with a read lock. This is useful for MyISAM,

MyISAM: This is the default type, which is based on the traditional ISAM type, and ISAM is the abbreviation for indexed sequential access method (indexed sequential access methods), which is the standard way to store records and files. Compared with

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

1. To optimize the query, avoid full-table scanning as far as possible, and first consider establishing an index on the columns involved in the Where and order by.2. You should try to avoid null values in the WHERE clause, otherwise it will cause

PHP and MySQL transaction processingIn general, transactions should have acid characteristics. The so-called acid is Atomic (atomicity), consistent (consistency), Isolated (isolation), durable (persistent) four words written in the first letter, the

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

Percona xtrabackup ( PXB) is a backup tool developed by Percona Company for the physical hot standby of MySQL database, supporting MySQL (Oracle), Percona Server and MariaDB, and all open source, is the industry's conscience. Tool SetAfter the

How MySQL improves the speed of bulk importA recent project test, there are several MySQL database table data records reached hundreds of thousands of, in the building test environment to import test data, very slow.Search on the Internet, there are

1. To optimize the query, avoid full-table scanning as far as possible, and first consider establishing an index on the columns involved in the Where and order by.2. You should try to avoid null values in the WHERE clause, otherwise it will cause

Mysql provides a plug-in ( Pluggable Storage Engine , the storage engine is based on the table. show engines; View Storage Engine650) this.width=650; "src=" http://blog.itpub.net/attachment/201408/1/29272216_1406872527vuBN.jpg "width=" 700 " height=

1. To optimize the query, avoid full-table scanning as far as possible, and first consider establishing an index on the columns involved in the Where and order by.2. You should try to avoid null values in the WHERE clause, otherwise it will cause