am 16.12.2004, um 11:41:54 +0100 mailte Jerome Alet folgendes:
> Hi,
>
> For a future databas, I plan to have got a table with a text field
> which can contain only three different values, say "VALUE1",
> "VALUE2", and "VALUE3"
Why text-fields for this task? I would prefer a smallint for this with a
check-contraint to check the values.
> be as fast as possible.
>
> considering that almost 70% of the rows will be with 'VALUE1', 20%
> will be with 'VALUE2' and 10% will be with 'VALUE3' on the average.
>
> should I create an index to speedup the counts or not ?
Yes.
Andreas
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