Apache Derby DB Error Code 42X09 – The table or alias name ‘‘ is used more than once

In this blog post, let’s learn about the error message “42X09- The table or alias name ‘‘ is used more than once” in Apache Derby Database and the description of the error.

Error Message

42X09- The table or alias name ‘‘ is used more than once

Error Details

The table or alias name ‘‘ is used more than once in the FROM list.