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Devolve uma nova matriz JSON com os elementos da primeira matriz JSON que não estão presentes na segunda matriz JSON.

JSON_ARRAY_EXCEPT(<json_array1>, <json_array2>)

Matriz JSON.

SELECT JSON_ARRAY_EXCEPT(
'["apple", "banana", "orange"]'::JSON,
'["banana", "grapes"]'::JSON
);
-[ RECORD 1 ]-----------------------------------
json_array_except('["apple", "banana", "orange"]'::VARIANT, '["banana", "grapes"]'::VARIANT): ["apple","orange"]
-- Return an empty array because all elements in the first array are present in the second array.
SELECT json_array_except('["apple", "banana", "orange"]'::VARIANT, '["apple", "banana", "orange"]'::VARIANT)
-[ RECORD 1 ]-----------------------------------
json_array_except('["apple", "banana", "orange"]'::VARIANT, '["apple", "banana", "orange"]'::VARIANT): []