Insert into a MySQL table or update if exists

Question

I want to add a row to a database table, but if a row exists with the same unique key I want to update the row.

For example:

Answer 1

INSERT IGNORE INTO table (id, name, age) VALUES (1, "A", 19);

INSERT INTO TABLE (id, name, age) VALUES(1, "A", 19) ON DUPLICATE KEY UPDATE NAME = "A", AGE = 19;

REPLACE INTO table (id, name, age) VALUES(1, "A", 19);

All these solution will work regarding your question.

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