Re: isnumeric() function?

--- Yudie <yudie(at)axiontech(dot)com> wrote:
> What is isnumeric function in postgresql?
> I'm using psql version 7.2.2
> thanks
> Yudie

I don't think that function is included as such. But
you could do something like:

CREATE FUNCTION isnumeric(text) RETURNS boolean AS '
SELECT $1 ~ ''^[0-9]+$''
' LANGUAGE 'sql';

Note that you would need to create this function for
every parameter datatype that you would intend to use,
or else be prepared to cast your input datatype as
appropriate.

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