[05/Aragon/05]

Choose a study mode

Play Quiz
Study Flashcards
Spaced Repetition
Chat to Lesson

Podcast

Play an AI-generated podcast conversation about this lesson

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

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

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

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

<p>False (B)</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 (A)</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 (B)</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 (A)</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 (A)</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 (B)</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 (B)</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 (A)</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

Flashcards are hidden until you start studying

More Like This

[05/Indigirka/01]
24 questions

[05/Indigirka/01]

InestimableRhodolite avatar
InestimableRhodolite
[05/Aragon/02]
41 questions

[05/Aragon/02]

InestimableRhodolite avatar
InestimableRhodolite
[05/Aragon/04]
25 questions

[05/Aragon/04]

InestimableRhodolite avatar
InestimableRhodolite
[05/Aragon/06]
18 questions

[05/Aragon/06]

InestimableRhodolite avatar
InestimableRhodolite
Use Quizgecko on...
Browser
Open
Browser
Browser