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MySQL SELECT, INSERT, UPDATE, and DELETE Cheatsheet/Replace a row using REPLACE

Insert or delete-and-insert based on unique key conflicts.

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Section: insert, update, and delete

Replace a row using REPLACE

sql
sql
REPLACE INTO feature_flags (flag_key, flag_value) VALUES ('beta_ui', 'on');
Explanation

`REPLACE` can have surprising semantics because it may delete the old row and insert a new one.

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