This quiz examines SQL window functions, including their use with ORDER BY and how NTILE and RANK functions operate on datasets.
Sample questions
In the "codeSnippet", what does the function do with the "ORDER BY" and "ROWS BETWEEN UNBOUNDED PRECEDING AND CURRENT ROW"?
In the "codeSnippet", how is the "NTILE(4)" function splitting the dataset?
Given the code in "codeSnippet", what value does the "RANK()" function assign to the third row if the second and third rows have identical sales values?
Refer to the "codeSnippet". Why does the query use "SUM" over a window?
What role does a "window frame" specification have in a window function?
Frequently asked questions
What does the "SQL Window Functions" code quiz cover?
This quiz examines SQL window functions, including their use with ORDER BY and how NTILE and RANK functions operate on datasets.
How many questions are in this code quiz?
This code quiz has 8 questions. Each question includes an explanation so you learn as you go.
Is this code quiz free to take?
Yes. You can take this code quiz for free on SkillDojo AI, and generate your own on any topic in seconds with AI.