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WITH TAB AS (SELECT 1 TOURIST_NAME, 'B' VISITED_PLACE FROM DUAL UNION ALL SELECT 1, 'C' FROM DUAL UNION ALL SELECT 1, 'D' FROM DUAL UNION ALL SELECT 2, 'A' FROM DUAL UNION ALL SELECT 2, 'E' FROM DUAL) SELECT TOURIST_NAME, VISITED_PLACE FROM (SELECT DISTINCT VISITED_PLACE FROM TAB), (SELECT DISTINCT TOURIST_NAME FROM TAB) MINUS SELECT TOURIST_NAME, VISITED_PLACE FROM TAB;
TOURIST_NAME
VISITED_PLACE
1
A
1
E
2
B
2
C
2
D