Mysql view

Get peak performance with the No-Limits Database. MemSQL is a distribute highly-scalable SQL database that can run anywhere. Advantages of MySQL Views. MySQL views bring the following advantages. Simplify complex query.

Views help simplify complex queries. MySQL supports views, including updatable views. A view acts as a virtual table.

The following discussion describes the syntax for creating and dropping views, and shows some examples of how to use them. Creating a view based on another view example. MySQL allows you to create a view based on another view. How to Create a View in MySQL.

Why do we need views in MySQL? How do I create a view in MySQL? In SQL, a view is a virtual table based on the result-set of an SQL statement.

The fields in a view are fields from one or more real tables in the database. You can add SQL functions, WHERE, and JOIN statements to a view and present the data as if the data were coming from one single table. In MySQL, View is a virtual table created by a query by joining one or more tables. This MySQL tutorial explains how to create, update, and drop VIEWS in MySQL with syntax and examples. In MySQL , a VIEW is not a physical table, but rather, it is in essence a virtual table created by a query joining one or more tables.

SELECT statements are used to take data from the source table to make a VIEW. Because you need to see the whole view definition before changing it. Note that if you have no privileges for a view , it will not show up in the output of the SHOW TABLES statement. MySQL Show View – using INFORMATION_SCHEMA database. The INFORMATION_SCHEMA database provides access to MySQL database metadata such as names of databases, tables, data types of columns, or privileges.

Summary: in this tutorial, you will learn how to rename a view in MySQL using the RENAME TABLE statement or a sequence of DROP VIEW and CREATE VIEW statements. Because views and tables share the same namespace, you can use the RENAME TABLE statement to change the name of a view. Mark Bell, devnull, zessx, Mr. As you can see, the basic syntax to create a view is CREATE VIEW name AS query.

Replace name with the name of the view , and replace query with the SQL query that you want to use. I’ll explain how to create this view and how to use it in your application. Here is the basic user table the view will be.

It can arrange data in some specific order, highlight or hide some data. Show create view viewName does not display correctly formatted text. How can I get the correctly-formatted SQL? MERGE is simply a query expansion with appropriate aliases.

TEMPTABLE is just what it sounds like, the view puts the into a temporary table before running the WHERE clause, and there are no indexes on it. I have created a view vw_extr. Now I want to rename it vw_my.

A visual data model can easily be transformed into a physical database on a target MySQL Server with just a few mouse clicks. MySQL Workbench provides capabilities for forward engineering of physical database designs.