2010/11/16 Louis-David Mitterrand <vindex+lists-pgsql-performance@apartia.org>:
> On Tue, Nov 16, 2010 at 12:03:29PM +0100, Pavel Stehule wrote:
>> Hello
>>
>> my opinion:
>>
>> @1 can be faster for access to last items with index
>> @2 can be more effective about data files length allocation
>
> Hi Pavel,
>
> What is "data files length allocation" ?
size of data files on disc :)
pg needs a some bytes for head on every row - so if you use a array,
then you share its. Next varlena types (like array) can be compressed.
Pavel
>
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