Answer
RETURNING returns columns from rows affected by INSERT, UPDATE, or DELETE, useful for retrieving generated IDs.
Quick Answer
RETURNING clause returns values from rows affected by INSERT, UPDATE, or DELETE - like a SELECT on modified rows. INSERT ... RETURNING id gets the auto-generated ID. UPDATE ... RETURNING new_value gets updated values. DELETE ... RETURNING * shows what was deleted. Eliminates a second SELECT query. More efficient and atomic than insert-then-select.
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SugharaIQ Editorial Team
Verified Answer
This answer has been peer-reviewed by industry experts holding senior engineering roles to ensure technical accuracy and relevance for modern interview standards.
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Source: SugharaIQ