SQL Functions Interview Questions and Answers

SQL Functions Interview Questions and Answers
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Here are the top 10 SQL functions commonly asked about in interviews:

1. **COUNT()** – Returns the number of rows.
2. **SUM()** – Calculates the total sum of a numeric column.
3. **AVG()** – Returns the average value.
4. **MAX() / MIN()** – Finds the highest or lowest value.
5. **LEN() / LENGTH()** – Returns the length of a string.
6. **GETDATE() / NOW()** – Fetches the current date and time.
7. **ROUND()** – Rounds a numeric value.
8. **ISNULL() / COALESCE()** – Handles NULL values.
9. **SUBSTRING()** – Extracts part of a string.
10. **CONCAT()** – Combines strings.

[HarithaComputersTechnology]

SQL Functions Interview Questions and Answers
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