- Mysql create view examples how to#
- Mysql create view examples full#
- Mysql create view examples code#
Mysql create view examples code#
GROUP BY orderNumber Code language: SQL (Structured Query Language) ( sql ) INNER JOIN customers USING (customerNumber) CREATE OR REPLACE VIEW customerOrders AS SELECT It uses the INNER JOIN clauses to join tables. The following example uses the CREATE VIEW statement to create a view based on multiple tables. Now, you can query the data from the bigSalesOrder view as follows: SELECTīigSalesOrder Code language: SQL (Structured Query Language) ( sql ) 3) Creating a view with join example Total > 60000 Code language: SQL (Structured Query Language) ( sql ) MySQL allows you to create a view based on another view.įor example, you can create a view called bigSalesOrder based on the salesPerOrder view to show every sales order whose total is greater than 60,000 as follows: CREATE VIEW bigSalesOrder AS SELECT If you want to query total sales for each sales order, you just need to execute a simple SELECT statement against the SalePerOrder view as follows: SELECT * FROM salePerOrder Code language: SQL (Structured Query Language) ( sql ) 2) Creating a view based on another view example The table_type column in the result set specifies the type of the object: view or table (base table).
Mysql create view examples full#
To know which object is a view or table, you use the SHOW FULL TABLES command as follows: SHOW FULL TABLES Code language: SQL (Structured Query Language) ( sql ) This is because the views and tables share the same namespace as mentioned earlier. SHOW TABLES Code language: SQL (Structured Query Language) ( sql ) If you use the SHOW TABLE command to view all tables in the classicmodels database, you will see the view salesPerOrder is showing up in the list. ORDER BY total DESC Code language: SQL (Structured Query Language) ( sql ) This statement uses the CREATE VIEW statement to create a view that represents total sales per order. Let’s take a look at the orderDetails table from the sample database: Let’s take some example of using the CREATE VIEW statement to create new views. If you want to explicitly create a view in a given database, you can qualify the view name with the database name. MySQL allows you to use the ORDER BY clause in the SELECT statement but ignores it if you select from the view with a query that has its own ORDER BY clause.īy default, the CREATE VIEW statement creates a view in the current database.
The SELECT statement can query data from tables or views. However, you can explicitly specify the column list for the view by listing them in parentheses following the view name.įinally, specify a SELECT statement that defines the view. By default, the columns of the view are derived from the select list of the SELECT statement. Third, specify a list of columns for the view. If the view does not exist, the OR REPLACE has no effect. Second, use the OR REPLACE option if you want to replace an existing view if the view already exists. Because views and tables in the same database share the same namespace, the name a view cannot the same as the name of an existing table. The name of the view is unique in a database. Here is the basic syntax of the CREATE VIEW statement: CREATE VIEW view_name ĪS select- statement Code language: SQL (Structured Query Language) ( sql )įirst, specify the name of the view that you want to create after the CREATE VIEW keywords. The CREATE VIEW statement creates a new view in the database. Introduction to MySQL CREATE VIEW statement
Mysql create view examples how to#
Summary: in this tutorial, you will learn how to use the MySQL CREATE VIEW statement to create a new view in the database.
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