Does MySQL Support the MERGE Statement for INSERT and UPDATE Operations?

Using Merge Statement in MySQL

Query:

I need to perform INSERT and UPDATE operations in a single query. In SQL, the MERGE statement is commonly used for this purpose. Is MERGE supported in MySQL?

Answer:

MySQL does not natively support the MERGE statement. However, there is an alternative approach that can achieve similar functionality:

INSERT...ON DUPLICATE KEY UPDATE

The INSERT...ON DUPLICATE KEY UPDATE syntax allows you to perform the following:

• Insert a new row if no duplicate key exists.
• Update an existing row if a duplicate key exists.

Example:

INSERT INTO table_name (column1, column2)
VALUES (value1, value2)
ON DUPLICATE KEY UPDATE
column2 = value3;

This query will:

• Insert a new row with (value1, value2) if there is no row with a matching key in table_name.
• Update the column2 value to value3 if a row with a matching key already exists.

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