[05/Aragon/05]
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Questions and Answers

Which aggregate function in the PostgreSQL-based Flow.BI repository calculates the average of a set of values?

  • MAX() (correct)
  • STD()
  • COUNT()
  • SUM()

    • What does the ARRAY_AGG() function do within the PostgreSQL-based Flow.BI repository?

  • Returns an array containing all values in a set (correct)
  • Returns a JSON object containing all values in a set
  • Counts the number of values in a set
  • Calculates the standard deviation of a set of values

    • Which PostgreSQL-based Flow.BI repository function returns a JSONB object containing all unique key-value pairs in a set?

  • VAR()
  • STRING_AGG()
  • JSONB_AGG()
  • JSON_OBJECT_AGG() (correct)

    • What is the purpose of the XMLELEM() function in the PostgreSQL-based Flow.BI repository?

    <p>Returns an XML element containing all values in a set</p> Signup and view all the answers

    If you need to return a string containing all values in a set separated by a specified delimiter, which function should you use?

    <p>STRING_AGG()</p> Signup and view all the answers

    Which aggregate function in PostgreSQL-based Flow.BI repository counts the number of values in a set?

    <p>COUNT()</p> Signup and view all the answers

    What does JSONB_OBJECT_AGG() do within the PostgreSQL-based Flow.BI repository?

    <p>Returns a JSONB object containing unique key-value pairs in a set</p> Signup and view all the answers

    Which function calculates the variance of a set of values within the PostgreSQL-based Flow.BI repository?

    <p>VAR()</p> Signup and view all the answers

    What is the main purpose of the SUM() function within PostgreSQL-based Flow.BI repository?

    <p>Calculates the sum of a set of values</p> Signup and view all the answers

    The SQL Expression field in the Metrics Tab is not directly editable.

    <p>False</p> Signup and view all the answers

    The AVG() function in the PostgreSQL-based Flow.BI repository calculates the sum of a set of values.

    <p>False</p> Signup and view all the answers

    COUNT() in the PostgreSQL-based Flow.BI repository returns the largest value in a set.

    <p>False</p> Signup and view all the answers

    The MIN() function in the PostgreSQL-based Flow.BI repository returns the smallest value in a set.

    <p>True</p> Signup and view all the answers

    STRING_AGG() function in the PostgreSQL-based Flow.BI repository returns a JSON object containing all values in a set.

    <p>False</p> Signup and view all the answers

    JSON_OBJECT_AGG() function in the PostgreSQL-based Flow.BI repository returns a JSON object containing unique key-value pairs.

    <p>True</p> Signup and view all the answers

    The STD() function calculates the standard deviation of a set of values in the PostgreSQL-based Flow.BI repository.

    <p>True</p> Signup and view all the answers

    ARRAY_AGG() function in the PostgreSQL-based Flow.BI repository returns an XML element containing all values in a set.

    <p>False</p> Signup and view all the answers

    VAR() function in PostgreSQL-based Flow.BI repository calculates the sum of a set of values.

    <p>False</p> Signup and view all the answers

    MAX() function in the PostgreSQL-based Flow.BI repository returns the largest value in a set.

    <p>True</p> Signup and view all the answers

    Match the PostgreSQL-based Flow.BI repository aggregate functions with their descriptions:

    <p>AVG() = Calculates the average of a set of values COUNT() = Counts the number of values in a set MAX() = Returns the largest value in a set MIN() = Returns the smallest value in a set</p> Signup and view all the answers

    Match the PostgreSQL-based Flow.BI repository aggregate functions with their descriptions:

    <p>STD() = Calculates the standard deviation of a set of values SUM() = Calculates the sum of a set of values VAR() = Calculates the variance of a set of values ARRAY_AGG() = Returns an array containing all values in a set</p> Signup and view all the answers

    Match the PostgreSQL-based Flow.BI repository aggregate functions with their descriptions:

    <p>JSON_AGG() = Returns a JSON object containing all values in a set JSONB_AGG() = Returns a JSONB object containing all values in a set JSON_OBJECT_AGG() = Returns a JSON object containing unique key-value pairs JSONB_OBJECT_AGG() = Returns a JSONB object containing unique key-value pairs</p> Signup and view all the answers

    Match the PostgreSQL-based Flow.BI repository aggregate functions with their descriptions:

    <p>STRING_AGG() = Returns a string containing all values in a set, separated by a specified delimiter XMLELEM() = Returns an XML element containing all values in a set MAX() = Returns the largest value in a set COUNT() = Counts the number of values in a set</p> Signup and view all the answers

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