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  1. stackoverflow.com › questions › 1361340How can I do 'insert if not exists' in MySQL? - Stack Overflow

    Instead of DUAL you can use (at least in mysql) INSERT INTO table (value1, value2) SELECT 'stuff for value1', 'stuff for value2' FROM (select 1) x WHERE NOT EXISTS (SELECT * FROM table WHERE value1='stuff for value1' AND value2='stuff for value2');

  2. www.geeksforgeeks.org › how-to-insert-if-row-does-not-exist-in-mysqlHow to INSERT If Row Does Not Exist in MySQL - GeeksforGeeks

    12 cze 2024 · An "AFTER INSERT" trigger in MySQL automatically executes specified actions after a new row is inserted into a table. It is used to perform tasks such as updating related tables, logging changes or performing calculations, ensuring immediate and consistent data processing.

  3. www.baeldung.com › sql › insert-update-if-row-existsInsert Into a SQL Table or Update if the Row Exists - Baeldung

    17 paź 2024 · MySQL provides two ways to insert a row into a table or update the row if it already exists. We can use the INSERT INTO … ON DUPLICATE KEY UPDATE syntax or the REPLACE statement.

  4. www.atlassian.com › data › adminUpsert Techniques in MySQL: INSERT If Not Exists | Atlassian

    Learn to insert rows in MySQL only if they don't exist. Explore techniques like INSERT IGNORE, REPLACE, and ON DUPLICATE KEY UPDATE. Dive into the guide!

  5. www.geeksforgeeks.org › how-to-insert-row-if-not-exists-in-sqlHow to Insert Row If Not Exists in SQL - GeeksforGeeks

    24 lip 2024 · Methods for Insert Row If Not Exists. There are 4 methods to use insert row if not exists: Using INSERT IGNORE; Using ON DUPLICATE KEY UPDATE; Using REPLACE; Using NOT EXISTS with INSERT; Method 1: Using insert ignore. Query: INSERT IGNORE INTO Student (id, name) VALUES (2, 'Aman'); Output: STUDENT Table. Explanation: The INSERT IGNORE ...

  6. www.slingacademy.com › article › mysql-upsert-update-if-exists-insert-if-notMySQL Upsert: Update if exists, insert if not - Sling Academy

    27 sty 2024 · Here’s how you would insert a new product or update the quantity if it already exists. INSERT INTO products (id, name, quantity) VALUES (1, 'Widget', 10) ON DUPLICATE KEY UPDATE quantity = VALUES(quantity) + 10;

  7. www.machinelearningplus.com › sql › how-to-insert-into-a-table-or-update-if-existsHow to insert into a table or update if exists in MySQL?

    Learn how to insert into a table or update if exists in MySQL and SQL Server. You need to calculate a running total in SQL Server and provide a solution that is also reproducible in MySQL.

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