From: | Christoph Lorenz <ChLorenz(at)csi(dot)com> |
---|---|
To: | pgsql-general(at)postgresql(dot)org |
Subject: | Extending SQL with a C function |
Date: | 1998-05-22 09:59:48 |
Message-ID: | ug1i24odn.fsf@haup42174.inhouse.compuserve.com |
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Lists: | pgsql-general |
Hi,
how can I write a SQL extention in C, which works with "unusual" data
types?
I've managed to write a c function, which accepts int4 as input parameter
and has got int4 as output parameter.
My problem now is, that I want to use a char(10) as input parameter, since
the input for that function is a colum, which is a char(10) type.
How do I do this?
(In the manuals, it is said, one should create an own data type in C - I've
already done this, called it "char10", but of course, I cannot use this
data type in SQL...)
Thank you very much
Christoph
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