EN
MySQL - Create view if not exist
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In this article, we would like to show you how to create a view if it doesn't already exist in MySQL.
Quick solution:
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CREATE VIEW IF NOT EXISTS `view_name` AS
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SELECT `column1`, `column2`, ...
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FROM `table_name`
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WHERE condition;
To show how the CREATE VIEW IF NOT EXIST
statement works, we will use the following table:
Note:
At the end of this article you can find database preparation SQL queries.
In this example, we will create a view that shows all users from Spain if it doesn't already exist.
Query:
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CREATE VIEW IF NOT EXISTS `Spain Users` AS
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SELECT `name`, `email`
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FROM `users`
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WHERE `country` = 'Spain';
To see the view created with the query above simply use:
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SELECT * FROM `Spain Users`;
Result:
create_tables.sql
file:
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CREATE TABLE `users` (
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`id` INT(10) UNSIGNED NOT NULL AUTO_INCREMENT,
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`name` VARCHAR(100) NOT NULL,
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`email` VARCHAR(100) NOT NULL,
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`country` VARCHAR(15) NOT NULL,
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PRIMARY KEY (`id`)
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)
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ENGINE=InnoDB;
insert_data.sql
file:
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INSERT INTO `users`
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(`name`, `email`, `country`)
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VALUES
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('Tom', 'tom01@email.com', 'Poland'),
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('Chris','chris123@email.com', 'Spain'),
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('Jack','jack32@email.com', 'Spain'),
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('Kim','kim103@email.com', 'Vietnam'),
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('Marco','marco942@email.com', 'Italy'),
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('Kate','kate227@email.com', 'Spain'),
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('Nam','nam393@email.com', 'Vietnam');