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WITH a AS ( SELECT 1 AS id, 1 AS count_a UNION ALL SELECT 2, 2 ), b AS ( SELECT 1 AS id, 3 AS count_b UNION ALL SELECT 3, 4 ), c AS ( SELECT 2 AS id, 5 AS count_c UNION ALL SELECT 4, 6 ) SELECT id, MAX(CASE WHEN src = 'a' THEN count END) AS "Count A", MAX(CASE WHEN src = 'b' THEN count END) AS "Count B", MAX(CASE WHEN src = 'c' THEN count END) AS "Count C" FROM ( SELECT id, count_a AS count, 'a' AS src FROM a UNION ALL SELECT id, count_b, 'b' FROM b UNION ALL SELECT id, count_c, 'c' FROM c ) t GROUP BY id ORDER BY id;
id
Count A
Count B
Count C
1
1
3
null
2
2
null
5
3
null
4
null
4
null
null
6