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Limit

Passing LIMIT into a query can significantly improve query times for queries that return large result sets. 
SELECT description, rating, category
FROM mock_items
WHERE description @@@ 'shoes'
LIMIT 5;

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Offset

OFFSET can be used with LIMIT to paginate through results. 
SELECT description, rating, category
FROM mock_items
WHERE description @@@ 'shoes'
LIMIT 1 OFFSET 2;