Both should work, but the 1st one does not require creation of a temporary table, so prefer the 1st one.
On Mon, May 16, 2016 at 1:12 PM, diopek <deha.pe...@gmail.com> wrote: > Can you please advise, which SQL group-by query would be better practice, > perform better? > > (1) > *select A, B, SUM(C) from MyCache where > MyCache.id IN (....................) > group by A, B* > > or, > (2) > by first storing IDs to be joined into some temporary cache as setting ID > as > affinity key to co-locate the data with MyCache > > and then do a cross-cache join query as the following; > > *select A, B, SUM(C) from MyCache, TempCache where > MyCache.id = TempCache.id > group by A, B* > > (1) or (2) ? > > > > > > -- > View this message in context: > http://apache-ignite-users.70518.x6.nabble.com/Ignite-Aggregation-query-tp4968p4974.html > Sent from the Apache Ignite Users mailing list archive at Nabble.com. >
