How will you do it? You can accomplish it using views. The catch is you need to show the data on more than four or five pages, and the query consists of complex logic. Suppose you have four tables in your database, and you need to gather the data from those four tables and display it in a single table on the front end. You might be thinking why do we need views when we already have tables? The answer is simple simplicity, security, and backward compatibility.
By definition, views are named queries stored in the database catalog. Views are the same as the regular table, but those are created using other tables. First, let’s understand database views and why we need them?Īlso read: MySQL Select Statement – Fetching Data from MySQL Databases What is Database View?Ī database view or simply a view is a virtual table based on other base tables of the database.
Mysql create view with primary key how to#
But, in this tutorial, we will only see how to create views with examples. This will cross join with only one row from the parameter table which is what you want. In the view use a cross join to the parameter table and put WHERE nnectionid CONNECTIONID (). Replace name with the name of the view, and replace query with the SQL query. We can also insert, update and delete the data using the views. replace into the parameter table and use CONNECTIONID () to populate the connectionid value. Syntax for MySQL Database CREATE TABLE persons ( id INT NOT NULL PRIMARY KEY AUTOINCREMENT, name VARCHAR(50) NOT NULL, birthdate DATE, phone VARCHAR(15). As you can see, the basic syntax to create a view is CREATE VIEW name AS query. We are going to learn about views with some simple as well as complex examples.
We will see the database view, how to create it, and how to do operations on it. In this tutorial, we will learn about the Views in MySQL.
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