How do you update a record in SQLite?

The UPDATE statement modifies existing rows matching a WHERE condition — omitting the WHERE clause updates every row in the table, which is a common and dangerous mistake if done accidentally.

UPDATE person
SET age = 35, email = 'ada.new@example.com'
WHERE id = 1;

It's good practice to first run the equivalent SELECT ... WHERE ... to confirm exactly which rows would be affected before running the actual UPDATE, especially for a condition you're not fully confident about — since an UPDATE without a safety net can silently modify far more rows than intended.

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