DA0-002 Data Acquisition and Preparation Practice Question
Which SQL function can be used to extract the year from a date column 'order_date'?
Answer choices
Why each option matters
Answer the question above first, then reveal the full breakdown to understand why each option is right or wrong.
Correct answer & explanation
✓
YEAR(order_date)
The YEAR function extracts the year portion from a date.
Answer analysis
Option-by-option breakdown
For each option: why learners choose it and why it is or isn't the right answer here.
- ✗
DATEDIFF(year, order_date)
Why it's wrong here
DATEDIFF returns the difference between two dates.
- ✗
DATEADD(year, order_date)
Why it's wrong here
DATEADD adds to a date, not extracts.
- ✓
YEAR(order_date)
Why this is correct
Correct: YEAR returns the year as an integer.
- ✗
FORMAT(order_date, 'yyyy')
Why it's wrong here
FORMAT returns a string; not a standard SQL function in all DBMS.
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