Apache Derby DB Error Code 42Y63 – Hash join requires an optimizable equijoin predicate on a co

In this blog post, let’s learn about the error message “42Y63- Hash join requires an optimizable equijoin predicate on a co” in Apache Derby Database and the description of the error.

Error Message

42Y63- Hash join requires an optimizable equijoin predicate on a co

Error Details

Hash join requires an optimizable equijoin predicate on a column in the selected index or heap. An optimizable equijoin predicate does not exist on any column in table or index ‘‘. Use the ‘index’ optimizer override to specify such an index or the heap on table ‘‘.