Apache Derby DB Error Code 42Y26 – Aggregates are not allowed in the GROUP BY list.

In this blog post, let’s learn about the error message “42Y26- Aggregates are not allowed in the GROUP BY list.” in Apache Derby Database and the description of the error.

Error Message

42Y26- Aggregates are not allowed in the GROUP BY list.

Error Details

Aggregates are not allowed in the GROUP BY list.