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Oracle – UNION UNION ALL INTERSECT MINUS MCQ

Oracle – UNION UNION ALL INTERSECT MINUS

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1. Which SQL operator is used to combine the result sets of two or more SELECT statements, removing duplicates in Oracle?

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2. What is the primary purpose of the UNION operator in Oracle SQL?

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3. Which SQL operator is used to combine the result sets of two or more SELECT statements, including duplicates in Oracle?

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4. What is the primary purpose of the UNION ALL operator in Oracle SQL?

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5. Which SQL operator is used to find common rows between the result sets of two or more SELECT statements in Oracle?

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6. What is the primary purpose of the INTERSECT operator in Oracle SQL?

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7. Which SQL operator is used to find rows that exist in the first result set but not in the second result set in Oracle?

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8. What is the primary purpose of the MINUS operator in Oracle SQL?

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9. Which SQL operator combines the result sets of two or more SELECT statements and removes duplicates in Oracle?

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10. What is the primary purpose of the UNION operator in Oracle SQL?

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11. Which SQL operator combines the result sets of two or more SELECT statements, including duplicates in Oracle?

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12. What is the primary purpose of the UNION ALL operator in Oracle SQL?

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13. Which SQL operator combines the result sets of two or more SELECT statements to find common rows in Oracle?

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14. What is the primary purpose of the INTERSECT operator in Oracle SQL?

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15. Which SQL operator combines the result sets of two or more SELECT statements to find rows in the first result set but not in the second in Oracle?

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16. What is the primary purpose of the MINUS operator in Oracle SQL?

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