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Can anyone point out how to check if a select query returns non empty result set?

For example I have next query:

SELECT * FROM service s WHERE s.service_id = ?;

Should I do something like next:

ISNULL(SELECT * FROM service s WHERE s.service_id = ?)

to test if result set is not empty?

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IF EXISTS(SELECT * FROM service s WHERE s.service_id = ?)
 BEGIN
   --DO STUFF HERE

 END

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