Apache Derby DB Error Code 42Y30 – The SELECT list of a grouped query contains at least one inv

In this blog post, let’s learn about the error message “42Y30- The SELECT list of a grouped query contains at least one inv” in Apache Derby Database and the description of the error.

Error Message

42Y30- The SELECT list of a grouped query contains at least one inv

Error Details

The SELECT list of a grouped query contains at least one invalid expression. If a SELECT list has a GROUP BY, the list may only contain valid grouping expressions and valid aggregate expressions.