In this blog post, let’s learn about the error message “42X40- A NOT statement has an operand that is not boolean . The ope” in Apache Derby Database and the description of the error.
Error Message
42X40- A NOT statement has an operand that is not boolean . The ope
Error Details
A NOT statement has an operand that is not boolean . The operand of NOT must evaluate to TRUE, FALSE, or UNKNOWN.