On 1/19/06 7:14 AM, "Martijn van Oosterhout" <kleptog@svana.org> wrote:
> On Thu, Jan 19, 2006 at 07:03:47AM -0500, Sean Davis wrote:
>> I have a table that stores data like so:
>
> <snip>
>
>> And I would like to design a query that gives:
>>
>> Clone_idx expt_id_1 expt_id_2 ....
>> 1 0.7834 0.8231 ....
>> 2 0.2832 1.2783 ....
>>
>> There are several tens-of-thousands of clone_idx entries, so doing this
>> quickly may not even be possible. Any suggestions on how to go from this
>> normalized structure to the denormalized form easily. Note that this isn't
>> exactly a crosstab, since there is no counting data, just reshaping.
>
> Although you may not call it exactly a crosstab, the crosstab
> functions in contrib/tablefunc should solve your problem nicely.
>
> Have a nice day,
Thanks Martijn and Michael. Crosstab functions will do the trick (though
for production, I think I will have to use some materialized views....)
Sean
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