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CREATE TABLE table_test (GR, I, VON, BIS) AS SELECT 1, 'a', 1, 2 FROM DUAL UNION ALL SELECT 2, 'b', 2, 3 FROM DUAL UNION ALL SELECT 1, 'c', 3, 4 FROM DUAL UNION ALL SELECT 1, 'd', 4, 5 FROM DUAL UNION ALL SELECT 3, 'e', 5, 6 FROM DUAL;
5 rows affected
SELECT * FROM table_test MATCH_RECOGNIZE( ORDER BY von MEASURES FIRST(gr) AS gr, FIRST(i) AS i, FIRST(von) AS von, LAST(bis) AS bis PATTERN (same_gr+) DEFINE same_gr AS FIRST(gr) = gr )
GR
I
VON
BIS
1
a
1
2
2
b
2
3
1
c
3
5
3
e
5
6