MySQL

MySQL Error code table1005: Failed to create table1006: Failed to create database1007: Database already exists, database creation failed1008: Database does not exist, delete database failed1009: Unable to delete database file causes database failure

Wampserver 2.5 64 bits-Tool software-source home August 25, 2014-Wampserver is a apache+php+mysql integrated environment with a simple graphical and menu installation and configuration environment. Support for 22 languages, including Simplified

There are two major strides in opening MySQL's remote login account:1. Determine that the firewall on the server does not block port 3306.MySQL default port is 3306, need to determine the firewall does not block 3306 port, otherwise remote is unable

1, the normal situation.SELECT from Nt_mainnum2. Using the Group_concat functionSelect from Nt_mainnum3. Use Substring_index and Cross join to split the numbers inside the column.Method One (online Query method):Configuration table: CREATE

reprinted from Http://blog.csdn.net/ghsau. MySQL upgrade from 5.5 to 5.6,timestamp changesThe behavior of timestamp in MySQL5.5 The first timestamp non-null character De Yin default value is not set by default:Current_timestamp on UPDATE

If your server environment allows Yum, installing the Mysql-python module is straightforward.If direct installation is not possible, firstNormal operation after installing Mysql-develYum Install mysql-develYum Install mysql-python-y 1

Explain shows how MySQL uses indexes to process SELECT statements and join tables. Can help select better indexes and write more optimized query statements.Parse an SQL statement first to see what

Recommended Brands//Start Here is the first productmysql_select_db ("member");mysql_query ("Set character set UTF8");mysql_query ("Set name UTF8");$result =mysql_query ("select * from ' purchasemessages ' where pur_tuijian=1 order by pur_id desc

MySQL Memory structureInnoDB Primary index is clustered index, index and data common table space, for InnoDB, data is index, index is data. The biggest difference between the InnoDB cache mechanism and the MyISAM cache mechanism is that INNODB is

when using in Mysql's master-slave replication architecture, there are two more headache issues: 1. how to deal with master-slave data after different steps2. How to solve the problem of master-slave synchronization delayThis article will be based

First, user authorization1. Precautions:-MySQL Database server is set up, placed in a separate room or IDC room,mysql database service By default only allows the database administrator root to log on locally, Authorization is required for other

An index is a specific sort of algorithm for a particular MySQL field, such as a two-tree algorithm and a hashing algorithm. MySQL default is the two fork tree algorithm BTREE.Explain optimized query detectionExplain can help developers analyze SQL

MySQL master-slave replicationScenario Description:Primary database server: 192.168.10.130,mysql is already installed and has no application data.From the database server: 192.168.10.131,mysql is installed and no application data is applied.2.1

One, Tianlong eight steps1. Connect to MySQL Database1 $link=mysqli_connect("localhost", "root", "Meiyoumima");2. Determine if the connection is successful1 if ($link) {23echo "database connection succeeded! "; 4 }else{56die ("Database connection

Before the installation of MySQL did not summarize, new computers, repair the installation record, installation, found some users of the installation records, found a lot of pits1, Mysql-5.7.12-winx64.zip downloadOfficial:

Physical machine win7, virtual machine for two CENTOS7 systemsExperiment MYSLQ Database Simple master-slave replication:Master node: 192.168.255.2From node: 192.168.255.3Mariadb-server installed with RPM packageTo configure the master node:]#

The type of data field defined in MySQL is important for optimizing your database.MySQL supports multiple types and can be broadly divided into three categories: numeric, date/time, and string (character) types.Numeric TypeMySQL supports all

This blog post is due to the previous Ef+mysql blog post, the previous blog post in the Seed method inserted Chinese data into the MySQL database garbled, and then found on the Internet n methods are not resolved.Re-installed MySQL and configured

MySQL commonly used data types are numeric type, text type, binary type, and time date.1. Numeric type Data type Description BIT (M) Bit type. m specified number of bits, default value 1, Range 1-64

Solve the Problem of forcing Mysql to close unexpectedly and cannot start the solution Start MySQL in CentOS: [wzhwho @ local ~] # Service mysqld startStarting mysqld daemon [FAILED] View MySQL startup system logs The default path for MySQL log