Ordered indices in Mnesia

Dave Smith <>
Wed Dec 14 07:14:07 CET 2005


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To clarify, I'm using disc-only, bag tables. The tables I'm dealing  
with are rather large...

D.

On Dec 13, 2005, at 10:59 PM, chandru wrote:

> Hi,
>
> On 14/12/05, Dave Smith <> wrote:
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>> This may be a stupid question, but I just can't seem to find the
>> answer. Is it possible to create a ordered index in mnesia? For
>> instance, I want to do the SQL equivalent of:
>>
>> SELECT TOP 10 value FROM table
>
> Mnesia has ordered set tables. When you create your table, you have to
> specify the {type, ordered_set} option. This only applies to the
> primary index. You can then use select to retrieve the top 10 records
>
> cheers
> Chandru
>

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