एक LEFT OUTER JOIN
का प्रयास करें :
SELECT * FROM forms
LEFT OUTER JOIN records
ON forms.form_id = records.form_id
WHERE records.form_id IS null
एक LEFT OUTER JOIN
का प्रयास करें :
SELECT * FROM forms
LEFT OUTER JOIN records
ON forms.form_id = records.form_id
WHERE records.form_id IS null