How to deal with (maybe) null values in a PreparedStatement?

Question

The statement is

SELECT * FROM tableA WHERE x = ?

and the parameter is inserted via java.sql.PreparedStatement \'stmt\'

stm         


        

Answer 1

I've always done it the way you show in your question. Setting the same parameter twice is not such a huge hardship, is it?

SELECT * FROM tableA WHERE x = ? OR (x IS NULL AND ? IS NULL);