Re: what datatype to use question

On Tue, 08 Apr 2003 12:45:09 -0400, Jeff Kish <jeff.kish_at_mro.com> wrote:

>Greetings.
>
>
>What datatype should I specify for a column that is to hold image extents?
>The values can be for raster, pretty small or large integers,
>and for vectors they can be in ranges like the following:
>(-21234.5768, 21234.5678)
>(-0.00332, .14234)
>etc.
>
>
>I am guessing that as long as I can guarantee 6 or 7 decimal places of accuracy, and hold up to 7 or 8 digits to the
>left of the decimal place, I should be pretty safe, but I am unsure how to proceed, i.e.:
>
>CREATE TABLE TESTDOUBLE (
> REALONE REAL ,
> DECIMALONE DECIMAL ,
> FLOATONE FLOAT ,
> NUMBERONE NUMBER
>)
>Are one of these recommended? I don't "think" I'll have to do where searches on the column, but I can't guarantee that
>it might happen in some obscure case.
>
>Thanks for your recommendations.
>Jeff

I'm leaning towards float. How can you tell the scale you get, i.e. number of digits to the right of the decimal point with using a certain type? I looked at all_user_tables and did not see anything for scale.. Does this mean it stores what it can?

Thanks again,
Jeff Received on Tue Apr 08 2003 - 12:07:37 CDT