Re: Fwd: Query parameter types not recognized

On Feb 10, 2017 8:11 PM, "Roberto Balarezo" <rober710(at)gmail(dot)com> wrote:

Hi, I would like to know why this is happening and some advice if there is
a way to solve this problem:

I have a query like this:

select COALESCE(duedate, ? + 1) from invoices order by duedate desc limit 10;

where ? is a query parameter. I’m using JDBC to connect to the database,
and sending parameters like this:

query.setDate(1, defaultDueDate);

If you want to add to a date you cannot just add 1. You need an interval:
coalesce(duedate, ? + interval '1 day')

See:

https://www.postgresql.org/docs/9.6/static/functions-datetime.html