SQL Interview Questions – GROUP_CONCAT

  1. What is GROUP_CONCAT?

The MySQL GROUP_CONCAT function concatenates strings or Numbers from a group into a single string with various options. Like comma separated values we have listed many examples

The following Query will return comma(,) seperated values each ID will listed like above table Group by Name column

You want to use any additional features like customized results like A and B Use SEPARATOR

Also You can remove the ID duplicates by DISTINCT

Top Interview questions for GROUP_CONCAT

1) What is GROUP_CONCAT and how to apply this in SQL query?
2) Can I concatenate multiple MySQL rows into one field?
3) Explain the difference between GROUP_CONCAT and Group By in SQL Query?