java enum and postgresql enum

Question

CREATE TABLE customers
(
  first_name character varying(15),
  second_name character varying(20),
  login character varying(15) NOT NULL,
  password character varyin         


        

Answer 1

I can take no credit for this answer as you have already solved it, but I will explain why it works.

PostgreSQL provides the answer when it says

Hint: You will need to rewrite or cast the expression

The Java code is creating a string literal value that represents the Java enum gendertype type.

Casting a literal to a PostgreSQL gender type is done by adding a casting suffix to the value ::gender.

So valid input would be

'F'::gender

or

'M'::gender

This works because all PostgreSQL types have a input method that takes a text representation and converts that to the internal form.