Postgresql Random Rec Set - no Duplicates with Livecode

Rick Harrison harrison at all-auctions.com
Wed Feb 2 16:40:28 CST 2011


Hi Pierre,

What I'm looking to do is to perform the Random pick from the database,
not reorder my results randomly after I've gotten all records.  I don't think
the code links below help me to do that.  I've been down this road already.

Thanks anyways!

Rick

On Feb 2, 2011, at 4:29 PM, Pierre Sahores wrote:

> It's a SQL syntax task, not a revDB one and as soon as the query will be OK, revDB will just handle it as expected.
> 
> <http://archives.postgresql.org/pgsql-general/2007-08/msg02034.php>
> <http://bytes.com/topic/postgresql/answers/857541-random-sample-rows>
> 
> Best regards,
> 
> Le 2 févr. 2011 à 21:29, Rick Harrison a écrit :
> 
>> Hi there,
>> 
>> I need to know the best way to get a random subset
>> of records without duplicates in the resulting record
>> set using a Postgresql database query with Livecode
>> on On-Rev.
>> 
>> In other words, I don't want to have to get all of the
>> records in the database first just to be able to pick
>> out the 21 random records i need, as that seems rather
>> inefficient.  Assume a couple of thousand records
>> in the database or more.
>> 
>> Thanks for your ideas in advance!
>> 
>> Rick
>> 
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> 
> --
> Pierre Sahores
> mobile : (33) 6 03 95 77 70
> 
> www.woooooooords.com
> www.sahores-conseil.com
> 
> 
> 
> 
> 
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