Oracle 12c - Ambiguous column in Insert Into Select Query, ORA-00918
问题 I am trying to execute multiple insert with single statement to achieve this I am using Insert into select statement. But I am facing when two columns have same value in insert. Error message that I am getting is ORA-00918: column ambiguously defined . Query INSERT INTO sample ( HOST, TOTAL_PING, TOTAL_UNAVAILABLE_PING ) SELECT * FROM ( SELECT 'FR3158-73-1', 82, 82 FROM DUAL UNION ALL SELECT 'FR3158-76-2', 80, 10 FROM DUAL ) Issue is there in first select statement where two values are 82 and