[plt-scheme] plt-scheme data representation/storage in sqlite3?

From: Jay McCarthy (jay.mccarthy at gmail.com)
Date: Fri Apr 17 12:21:45 EDT 2009

I assume you mean with my sqlite planet package.

Here's how I bind parameters:

                   [(integer? param)
                    (sqlite3_bind_int64 handle i param)]
                   [(number? param)
                    (sqlite3_bind_double handle i param)]
                   [(string? param)
                    (sqlite3_bind_text handle i param)]
                   [(bytes? param)
                    (sqlite3_bind_blob handle i param)]
                    (sqlite3_bind_null handle i)])

As you see, Scheme's arbitrary precision numbers are transformed into
sqlite3's doubles. If you need a different encoding, you'll have to
implement it manually.


On Fri, Apr 17, 2009 at 10:17 AM, Mike Eggleston <mikeegg1 at me.com> wrote:
> Morning,
> In my playing I'm getting close to storing data in sqlite3. I am working
> with some exact numbers with very large numerators and denominators. When
> the data is stored in sqlite3, what is the representation? Is the data
> stored as a fraction in a text column or as something else?
> (Yes, I realize I could just try that. I just can't at the moment and
> am curious for the answer.)
> Mike
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Jay McCarthy <jay at cs.byu.edu>
Assistant Professor / Brigham Young University

"The glory of God is Intelligence" - D&C 93

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