Hi, In issues 528[1]Implicitly do Group By （Down sample） to avoid sending to many data over the wire.At present, I plan to use different sampling intervals for different query ranges
<1h: no sampling 1h~1d : intervals = 1m 1d~30d:intervals = 1h >30d：intervals = 1d Does anyone have any better Suggestions? [1]https://issues.apache.org/jira/browse/IOTDB-528 Best, ----------------------------------- Sail
