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Re: InstantDB: Memory consumption and column widths


Brian

> So if I'm understanding you correctly, a CHAR(256) column will always
>consume approximately double the amount of space that a CHAR(128) column
>does, without regard to the data in the column?

Yes - unless you use TEXT (variable length) or SMALLCHAR (single byte fixed
length).

Regards

Peter Hearty
Lutris Technologies UK Ltd.

>Peter Hearty wrote:
>>
>> Brian
>>
>> I you create a CHAR (256) column then the column will always reserve 256
>> Unicode characters plus a length field, i.e. 256*2+4 = 516 bytes. If you
>> want variable length strings then use the TEXT type, although this will
be
>> slightly slower.
>>
>> Regards
>>
>> Peter Hearty
>> Lutris Technologies UK Ltd.
>> -----Original Message-----
>> From: Brian Sanchez <bsanchez@ara.com>
>> To: instantdb@enhydra.org <instantdb@enhydra.org>
>> Date: 07 July 2000 00:56
>> Subject: InstantDB: Memory consumption and column widths
>>
>> >
>> > I have a fairly large database (a couple of thousand records) and I'd
>> >like to know what effect increasing the column width will have on the
>> >memory consumption of my application.
>> >
>> > If a column is declared as CHAR(256), is InstantDB using that as the
>> >absolute size of the column or the maximum size?  For example, if I
>> >insert "foo" into that column, is that record consuming the full 256
>> >chars, or just enough to hold the string, which would be less than 5
>> >chars?
>> >
>> > Thanks,
>> > Brian Sanchez
>> > bsanchez@ara.com
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