Explain UNION,MINUS,UNION ALL, INTERSECT ?

ORACLE Interview Questions and Answers (Part 5)

(Continued from previous question...)

851. Explain UNION,MINUS,UNION ALL, INTERSECT ?

INTERSECT returns all distinct rows selected by both queries.MINUS - returns all distinct rows selected by the first query but not by the second.UNION - returns all distinct rows selected by either queryUNION ALL - returns all rows selected by either query, including all duplicates.

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• ORACLE Interview Questions and Answers (Part 5)
• Oracel Interview Question Only (1)
• Oracel Interview Question Only (2)