Oracle - PIVOT Clause MCQ

Oracle – PIVOT Clause

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1. What is the primary purpose of the Oracle PIVOT clause?

To transpose rows into columns

To sort data

To aggregate data

To filter data

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2. Which SQL clause is used in conjunction with the PIVOT clause to specify the columns to pivot?

SELECT

PIVOT

FOR

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3. In Oracle PIVOT, which function is commonly used to aggregate data within the pivoted columns?

COUNT()

MAX()

SUM()

AVG()

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4. What is the main advantage of using the PIVOT clause in Oracle?

It simplifies complex queries

It eliminates the need for JOIN clauses

It speeds up query performance

It creates indexes automatically

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5. In a PIVOT query, what does the FOR clause specify?

The values to be pivoted

The data source

The columns to be aggregated

The aggregate function

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6. Which keyword is used to specify the values that will become the new column headers in a PIVOT query?

PIVOT

FOR

SELECT

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7. Which type of data is typically suitable for PIVOT operations in Oracle?

Categorical data

Date data

Numeric data

Text data

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8. In an Oracle PIVOT query, what does the pivot_column represent?

The aggregate function

The values to be aggregated

The new column headers

The data source

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9. What is the purpose of the PIVOT XML clause in Oracle?

To sort XML data

To generate XML output from a PIVOT query

To pivot XML data

To filter XML data

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10. In Oracle PIVOT, which clause is used to define the pivot values that will become new columns?

PIVOT

VALUES

SELECT

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11. Which SQL clause is used to specify the aggregation function applied to pivoted columns in Oracle PIVOT?

AGGREGATE

FUNCTION

PIVOT

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12. In Oracle PIVOT, what is the role of the aggregation function?

To aggregate data within columns

To transpose rows into columns

To specify column headers

To filter rows

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13. What happens if you don’t use an aggregate function in an Oracle PIVOT query?

The results are incorrect

The query runs without issues

The query becomes slower

An error occurs

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14. Which keyword is used to indicate the start of a PIVOT operation in Oracle SQL?

GROUP

AGGREGATE

TRANSPOSE

PIVOT

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15. In an Oracle PIVOT query, what is the purpose of the IN clause?

To filter rows

To specify the data source

To define the aggregate function

To specify the values that will become new columns

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16. Which clause is used in an Oracle PIVOT query to specify the source of data to be pivoted?

FROM

PIVOT

SELECT

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17. What does the PIVOT clause do when applied to a table in Oracle SQL?

It aggregates data

It sorts data

It rotates columns into rows

It filters data

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18. In an Oracle PIVOT query, what does the pivot_for_clause specify?

The columns to pivot

The aggregate function

The data source

The values to be aggregated

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19. Which clause is used to specify the values that will become new column headers in an Oracle PIVOT query?

PIVOT

SELECT

VALUES

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20. In Oracle PIVOT, what is the role of the FOR keyword?

To define the aggregate function

To filter rows

To group data

To specify the values that will become new columns

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21. What is the result of applying the PIVOT clause to a table in Oracle SQL?

An error message

A filtered table

A table with the same structure

A transposed table with new column headers

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22. In an Oracle PIVOT query, what does the VALUES clause specify?

The aggregate function

The new column headers

The values to be aggregated

The data source

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23. Which keyword is used to indicate the end of a PIVOT operation in Oracle SQL?

STOP

PIVOT

END

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24. What is the primary advantage of using the PIVOT clause in Oracle SQL?

It speeds up query performance

It simplifies complex queries by transposing data

It eliminates the need for aggregation

It converts columns into rows

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25. In Oracle PIVOT, which clause is used to specify the columns to be aggregated and transposed?

PIVOT

FOR

AGGREGATE

SELECT

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Oracle – PIVOT Clause MCQ