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WITH ranges(id, a, b) AS ( SELECT 1, 0, 40 UNION SELECT 2, 40, 60 UNION SELECT 3, 80, 100 UNION SELECT 4, 10, 30 ), tests(id, a, b) AS ( SELECT 1, 10, 90 UNION SELECT 2, 10, 60 ), ranges_chg AS ( SELECT *, CASE WHEN MAX(b) OVER (ORDER BY a ROWS BETWEEN UNBOUNDED PRECEDING AND 1 PRECEDING) >= a THEN 0 ELSE 1 END AS chg FROM ranges ), ranges_grp AS( SELECT *, SUM(chg) OVER (ORDER BY a) AS grp FROM ranges_chg ), merged_ranges AS ( SELECT MIN(a) AS a, MAX(b) AS b FROM ranges_grp GROUP BY grp ) SELECT * FROM tests WHERE EXISTS ( SELECT 1 FROM merged_ranges WHERE merged_ranges.a <= tests.a AND tests.b <= merged_ranges.b )
id
a
b
2
10
60