MySQL

The Mysql-client package allows your to connect to a MySQL server. It'll give you the ' MySQL ' command-line program.The Mysql-server package allows-to-run a MySQL server which can host multiple databases and process queries on those D Atabases.

function substring:1. Intercept string from leftLeft (str, length)Description: Left (truncated field, intercept length)Example: Select Left (content,200) as abstract from my_content_t2, starting from the right to intercept the stringRight (str,

Btree Index:If there is no particular type, most of it is the btree index, which uses the btree data structure to store it, and most MySQL engines support this index,archive engine is an exception ,before 5.1 this engine does not support any

There are three standard loops in a MySQL stored procedure statement: While loop, loop loop, and repeat loop. There is also a non-standard cycle mode: GOTO, but this cycle is best not to use, it is easy to cause confusion of the program, here is a

These should be required by the company, need to give the development department to train MySQL, so has been thinking, from what to start, to make you interested in prawns! Start with the syntax, which will give you the fastest knowledge and

When using Mysqlbinlog to analyze logs, error:/usr/local/mysql/bin/mysqlbinlog:unknown variable ' Default-character-set=utf8 'Cause Analysis:The reason for this problem is that I added it in the Client option group in MY.CNF:

MySQL study--"Too many connections" error solutionThe error message is as follows :Can not connect to MySQL serverError:too Many connectionsErrno.: 1040Similar Error Report have beed dispatched to administrator before.The following is a description

Reference: 5 kinds of MySQL log analysis tools to compete http://blog.csdn.net/gzh0222/article/details/103844751.mysql-log-filter Tool Script Usage instructions:An analysis tool found on Google code. Two executable scripts for Python and PHP are

CREATE TABLE tab2 as (SELECT * from TAB1)The storage engine for this practice table also uses the server's default storage engine instead of the source table's storage engine, which copies the contents of the table together.CREATE talbe tab2

##################################################################################Start off and Login##################################################################################1 Single InstanceMysqld_safe--user=mysql &

Sometimes a blank form is sent to the customer, because nothing is filled out directly. Oh, how bad.Introduces 2 functions, Isset and empty. Isset returns True for the assigned variable, regardless of the value assigned, the empty string is also

MySQL for Linux database installation processL installation Version: Mysql-advanced-5.6.12-linux-glibc2.5-x86_64.tar.gz, this version is a green version, just need to extract it to the relevant directory.PS: This installation method is not a common

Before MySQL5.0, a table in a statement can use only one index and cannot use multiple indexes at the same time. However, starting with 5.1, the index merge optimization technique is introduced, and multiple indexes can be used for the same table.

How do I create a table with SQL statements under the Navicat for MySQL interface? Let me tell you in a small series below. First Open the Navicat, select a database, click "Query", on the right click "Create Query", enter the SQL statement, click "

[Mysql] database usage specifications, mysql database specificationsI. MySQL Problems The optimizer does not support complex SQL statements. Poor Support for SQL standards The large-scale cluster solution is not mature, mainly refers to

MySQL remote connection and mysql connection Overview This article describes how to create a remote connection table through the federated storage engine. Test environment: mysql 5.6.21  Procedure Enable federated storage engine Check whether the

Mysql slow query log analysis tool1. mysql-log-filter tool script usage instructions: an analysis tool found on google code provides two executable scripts: python and php. Http://code.google.com/p/mysql-log-filter/ (need to move the ladder to climb

Mysql while, loop, repeat loop, conforming to the condition to jump out of the loop, mysqlrepeat1. while Loop DELIMITER $ drop procedure if exists 'SP _ test_while '$ create procedure 'SP _ test_while' (IN p_number INT, # The number of times to be

Mycat discrete parts-) Enumeration parts1. Enumeration parts Enumeration sharding: You can configure the shard by configuring the possible enumeration id in the configuration file. This rule applies to specific scenarios. For example, some

Drupal7 website + IIS7.0 + PHP + MySql, drupal7iis7.0 1. server System Environment Windows Server 2008 R2 Enterprise 64-bit operating system 2. required Software IIS7PHPManager