PostgreSQL · question
Question 4 of 36
Explain the difference between DELETE, TRUNCATE, and DROP.
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- DELETE: Removes specific rows based on conditions, can be rolled back, triggers fire
- TRUNCATE: Removes all rows quickly, can be rolled back, triggers don't fire
- DROP: Removes the entire table structure and data, cannot be rolled back
DELETE FROM users WHERE age < 18; -- Removes specific rows
TRUNCATE TABLE users; -- Removes all rows
DROP TABLE users; -- Removes table entirely
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