mysql create view if not exists

When mysql processes a unique index, it updates the index. If it does not exist, it should be very common to insert the index. There are many similar articles on the Internet, today I will talk about the problems and methods that may occur when this

MySQL getting started tutorial (7) view, mysql getting started tutorial View Related reading: MySQL getting started tutorial (5) create, modify, and delete tables A view is a virtual table exported from one or more tables. A view is like a window in

Installation RequirementsInstallation Environment: CentOS-6.3Installation Method: source code compilation installationSoftware Name: mysql-cluster-gpl-7.2.6-linux2.6-x86_64.tar.gzDownload Address: http://mysql.mirror.kangaroot.net/Downloads/Software

MySQL常用指令，java，php程序员，数据库工程师必备。程序员小冰常用资料整理MySQL common commands (for reference)The most common display commands are:1. Display the list of databases.show databases;2. Display the data table in the library:Use MySQL;Show tables;3, display the

A view is a table that is exported from one or more tables. is a virtual existence of a table. A view is like a window through which you can see the data that is specifically provided by the system. This allows the user to not see the data in the

MySQL Optimization-view and mysql View Reprinted please indicate the source: http://blog.csdn.net/l1028386804/article/details/46761521 What is the reason for using the view? 1. Security: This is generally done: Create a view and define the data

After I deleted the original mysql4.0 file in s9, I installed a new mysql5.0 file. During the startup process, I reported an error and failed to start the file. I checked the old post in the group and did not provide a specific description. After I

I. Introduction to a view, role, and Advantages 1. What is a view? A. A view is a virtual table that is exported from one or more tables in the database. the database only stores view definitions, but does not Store View data. The data is stored in

How to configure MySQL database server on CentOS BitsCN.com accidentally found CentOS Professional Forum, remember: http://www.centospub.com As a result, the initial learning configuration This environment: CentOS system, Mysql-server (version

Records in error log: [ERROR] Fatal Error:can ' t open and Lock Privilege tables:table ' mysql.host ' doesn ' t exist From the post, only people look, no one replied, see this situation can only solve their own problems, their hands and clothing,