MySQL

I originally wanted to use PHP to implement random queries, but it seems that I have to perform more than two queries. Recently, I found the following statement in the MySQL manual to complete the task. SELECT * FROM table_name order by rand ()

1. mysqlimport syntax introduction: Mysqlimport is located in the mysql/bin directory and is a very effective tool for mysql to load or import data. This is a command line tool. There are two parameters and a large number of options to choose from.

Mysql versions later than 3.23.15 provide the database replication function. This feature allows you to synchronize two databases, master-slave mode, and mutual backup mode. The settings of the Database Synchronization replication function are

In the previous article, we talked about logon, adding users, and changing passwords. Next, let's take a look at the database operations in MYSQL. Note: you must first log on to MYSQL. The following operations are performed at the MYSQL prompt and

I. MySQL Introduction MySQL is a relational database management system (RDBMS ). It can organize and manage a large amount of data, and makes it easy for us to manage and obtain information through server-side scripting languages such as PHP. MySQL

After using other databases such as oracle and sybase, when getting started with the mysql database, I usually care about how to know the current database, what tables are in the database, and what table structure is there? How to execute an

As long as you send your email to the mysql-subscribe@lists.mysql.com, You have to subscribe to the MySQL mail list. And when you want to cancel the subscription, just send the email to the mysql-unsubscribe@lists.mysql.com. The emails you send are

Basic Syntax: CREATE [OR REPLACE] [ALGORITHM = {UNDEFINED | MERGE | TEMPTABLE}] VIEW view_name [(column_list)] AS select_statement [WITH [CASCADED | LOCAL] CHECK OPTION] This statement creates a new view, or replaces an existing one ifOR

I. Basic Terms In the database World, MySQL is classified as a relational database management system (RDBMS ). The meaning of the so-called relational database management system is as follows: ■ Database RDBMS "DB") is a warehouse for storing

MySQL has a set of utilities. For example, mysqldump exports the context and structure definitions of a table. mysqlimport loads data files into the table, and mysqladmin manages w operations. mysql allows users to interact with the server to

You must have used the Database Import and Export function in phpmyadmin, which is very convenient. However, in practical application, I found the following problems:1. The size of the database exceeds a certain size. For example, if the size of 6

This article discusses some common MySQLC API program design errors and how to avoid these problems that will suddenly occur in the MySQL Mail List periodically ). 1. Error 1 -- use uninitialized connection HandlerNeedle We have passed the NULL

This article describes MySQL, an effective tool for developing electronic trade and other complex and dynamic websites using third-party databases. MySQL is a fast, multi-threaded, and fully functional SQL Server. In addition to describing the basic

PremiumSoft recently launched Navicat MySQL GUI version 7.2.9 for Windows. This is a powerful and easy-to-use MySQL graphical management tool that provides a wide range of functions to manage and develop MySQL. This version includes minor patch

Compiling the MySQL kernel is often used. The following articles mainly introduce the correct method for compiling the MySQL kernel. If you are curious about compiling the MySQL kernel technology, the following articles will unveil its mysteries. I

The following articles mainly introduce MySQL performance optimization parameters. When talking about MySQL performance optimization parameters, you may feel unfamiliar, but it is still quite large in actual operations, the following is a detailed

As a network database, MySQL (the best combination with PHP) has excellent performance, but it is rarely used in application software. This article will mainly discuss the application of MySQL database interface-odbc api and c api) in VC, and form a

The following article mainly describes how to use MySQL to search for index-related fields to improve search efficiency. We all know that the LIKE statement in a SELECT query is mainly used to execute the query, although this method is feasible, it

We all know that MySQL's reference integrity is generally applied through the specific use of the MySQL foreign key (foreign key. In general, the popular tool open-source RDBMS MySQL (the best combination with PHP) does not support foreign keys

1) int mysql_affected_rows ([int link_id]); In a given connection, the number of rows affected by the last DELETE, INSERT, REPLACE, or UPDATE statement is returned. If no row is modified, mysql_affected_rows () returns 0. If an error occurs,-1 is