Agence de Développement Informatique du Nord » optimization http://blog.adin.pro Just another WordPress site Thu, 26 Dec 2019 08:54:31 +0000 en-US hourly 1 http://wordpress.org/?v=4.1.1 Mysql INSERT … ON DUPLICATE KEY UPDATE http://blog.adin.pro/2013-03-27/mysql-insert-on-duplicate-key-update/ http://blog.adin.pro/2013-03-27/mysql-insert-on-duplicate-key-update/#comments Wed, 27 Mar 2013 22:37:01 +0000 http://blog.adin.pro/?p=160 If you want to do some data loads in a Mysql DB regardless of insert or update statement you can use the INSERT … ON DUPLICATE KEY UPDATE request. In this example, if the key is composed by firstname and … Continue reading →

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]]> If you want to do some data loads in a Mysql DB regardless of insert or update statement you can use the INSERT … ON DUPLICATE KEY UPDATE request.

INSERT INTO test (firstname, lastname, skill)
      VALUES
      ('Alan', 'Cox', 98),
      ('Robert', 'Love', 85),
      ('Linus', 'Torvalds', 24),
      ('Rusty', 'Russell', 79)
ON DUPLICATE KEY UPDATE
     skill = VALUES(skill);

In this example, if the key is composed by firstname and lastname, when a duplicate key is detected, only the skill will be updated

You could find more informations on this statement here

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