Numeric and money

Hello Everyone,

I am in the process of migrating my Access97 application to PostgreSQL. So
far everything looks great with one exception. I converted my currency
fields in Access to numeric(9,2) as recommended in the PostgreSQL
documentation. Many things to don't play well with the numeric the data
type. Here are some examples:

create table tst (id int, amount numeric(9,2));
insert into tst values (1, 1.10);
insert into tst values (2, 1.00);
insert into tst values (2, 2.00);
select * from tst where amount = 1; -- works
select * from tst where amount = 1.1; -- fails
select * from tst where amount = 1.10; -- fails
select amount::varchar from tst; -- fails
select amount::money from tst; -- fails
select id || ', ' || id from tst; -- works
select id || ', ' || amount from tst; -- fails

From within Access, I can't update any table with a numeric data type
because of the "select * from tst where amount = 1.1;" failure. These
limitations have caused me to wonder what other PostgreSQL users are using
for their money values? Is numeric(9,2) the best choice for money? I
think that adding numeric to text and text to numeric operators will fix
most of these issues. I plan to add these operators very soon and thought
I would ask if anyone has done this before and could provide me an example
or two before I start. Does anyone know of any internal functions that
already exist to convert numeric to text so that I don't have to write one?
I know that psql successfully does this.

Thanks, Michael Davis
Database Architect and Senior Software Engineer, Seva Inc.
Office: 303-460-7360 Fax: 303-460-7362
Mobile: 720-320-6971
Email: mdavis(at)sevainc(dot)com