Javier Goizueta 2edcbb4724 Implement aggregation queries. ... Implmented for placements: centroid, point-gird, point-sample. Aggregated columns not yet implemented (only count). Aggregation could be made more efficient by using quadkeys		2017-12-11 18:33:06 +01:00
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cartodb	Implement aggregation queries.	2017-12-11 18:33:06 +01:00