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CREATE TABLE test_brand (note text, factor int, label int); INSERT INTO test_brand VALUES ('note_1', 1, 2), ('note_1', 1, 3), ('note_1', 2, 4), ('note_2', 123, 2), ('note_2', 123, 3), ('note_2', 2, 4), ('note_3', 456, 4), ('note_4', 434, 5), ('note_5', 456, 3), ('note_5', 456, 4) ;
10 rows affected
WITH cte AS ( SELECT min(rn) AS rn, notes FROM ( SELECT row_number() OVER (ORDER BY factor, label) AS rn -- ORDER BY factor, label ! , array_agg(note ORDER BY note) AS notes FROM test_brand GROUP BY factor, label ) sub GROUP BY notes ) SELECT row_number() OVER (ORDER BY rn) AS rn, notes FROM cte c WHERE NOT EXISTS ( SELECT FROM cte c1 WHERE c1.notes @> c.notes AND c1.rn <> c.rn ) ORDER BY 1;
rn
notes
1
{note_1,note_2}
2
{note_4}
3
{note_3,note_5}