Querying and SQL Functions
CBSE · Class 12 · Informatics Practices
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Quick Quiz: Querying and SQL Functions
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Which SQL function is classified as a single row function and also called a scalar function?
What is the output of SELECT POWER(2,3); ?
What does ROUND(2912.564,1) return?
What does MOD(21,2) return?
Sample Questions
Which functions are numeric single row functions in SQL?
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POWER(), ROUND(), MOD()
POWER(), ROUND(), and MOD() are numeric functions because they take numeric input and return numeric output.
Which function converts a string into uppercase?
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UCASE()
UCASE() converts a string into uppercase. UPPER() also does the same job.
Which function returns the number of characters in a string?
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LENGTH()
LENGTH() returns the number of characters in the specified string.
Which date and time function returns the current system date and time?
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NOW()
NOW() returns the current system date and time.
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Sources & Official References
- NCERT Official — ncert.nic.in
- CBSE Academic — cbseacademic.nic.in
- CBSE Official — cbse.gov.in
- National Education Policy 2020 — education.gov.in
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