DA0-002 Data Acquisition and Preparation Practice Question
An analyst needs to retrieve the year from an order_date column (datetime type). Which function should be used in SQL?
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
✓
EXTRACT(YEAR FROM order_date)
EXTRACT(YEAR FROM order_date) is the standard SQL function to get the year part.
Answer analysis
Option-by-option breakdown
For each option: why learners choose it and why it is or isn't the right answer here.
- ✗
FORMAT(order_date, 'yyyy')
Why it's wrong here
FORMAT is used for formatting, not extracting the year as an integer.
- ✗
DATEADD(YEAR, order_date, 0)
Why it's wrong here
DATEADD adds intervals, it does not extract.
- ✗
YEAR(order_date)
Why it's wrong here
YEAR() is a function in some DBMS like MySQL, but not standard SQL. However, EXTRACT is more universal.
- ✓
EXTRACT(YEAR FROM order_date)
Why this is correct
EXTRACT is the standard SQL function for date parts.
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