Query Stored Index instead of Group By
am 19.12.2010 03:19:34 von Feris Thia
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Hi Everyone,
Is there a way to query values stored in our index instead of using "group
by" selection which will produce same results ?
Please advice..
Regards,
Feris
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Re: Query Stored Index instead of Group By
am 19.12.2010 13:11:06 von Johan De Meersman
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On Sun, Dec 19, 2010 at 3:19 AM, Feris Thia <
milis.database@phi-integration.com> wrote:
> Hi Everyone,
>
> Is there a way to query values stored in our index instead of using "group
> by" selection which will produce same results ?
>
You can't query the index directly, but if you select only fields that are
in the index, no table lookups will be performed - this is called a covering
index.
--
Bier met grenadyn
Is als mosterd by den wyn
Sy die't drinkt, is eene kwezel
Hy die't drinkt, is ras een ezel
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Re: Query Stored Index instead of Group By
am 21.12.2010 04:19:28 von Feris Thia
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Hi Johan,
On Sun, Dec 19, 2010 at 7:11 PM, Johan De Meersman wrote:
> You can't query the index directly, but if you select only fields that are
> in the index, no table lookups will be performed - this is called a covering
> index.
>
Great.. Thanks for the confirmation.
Regards,
Feris
>
> --
> Bier met grenadyn
> Is als mosterd by den wyn
> Sy die't drinkt, is eene kwezel
> Hy die't drinkt, is ras een ezel
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