Quick question Sean. I made an CQ like the one you mention, but my problem now is that the tags end up like: first_1first_2first_3Ideally I would want the data, and tags to be just like the source, just with lower resolution? Is that possible? (I did try the "as" operator and the tag name, but that did not work.)
Regards, Peter tirsdag 2. august 2016 20.09.24 UTC+2 skrev Sean Beckett følgende: > > There are no query language operators or functions that select points > based on ordinality. The best current solution to your need is to use a CQ, > which won't introduce noticable additional storage or load, unless you are > running on a very low power device. > > CREATE CQ... > SELECT FIRST(value) AS "60th_point" INTO bar FROM foo GROUP BY time(1m), * > END > > That will store the point from xx:xx:00 in the new "bar" measurement. > > On Tue, Aug 2, 2016 at 8:19 AM, <[email protected] <javascript:>> > wrote: > >> Hi guys, >> >> I'm trying to figure out how to query every n-th value of a time series >> measurement? Lets say that I store a point every second, and later want to >> query every 60th point from time x to time y? >> >> I've seen there are CQs that can make the downsampled data, but for my >> use case it does not make sense since it will only add to more load and >> storage being used. Performance wise it shouldn't be any harder/slower >> either to query 100 point that are not adjacent compared to 100 that are, >> or am I wring here? >> >> Thanks, >> Peter >> >> -- >> Remember to include the InfluxDB version number with all issue reports >> --- >> You received this message because you are subscribed to the Google Groups >> "InfluxDB" group. >> To unsubscribe from this group and stop receiving emails from it, send an >> email to [email protected] <javascript:>. >> To post to this group, send email to [email protected] >> <javascript:>. >> Visit this group at https://groups.google.com/group/influxdb. >> To view this discussion on the web visit >> https://groups.google.com/d/msgid/influxdb/aa778b27-3257-42f3-96a5-3b7c3158ad1f%40googlegroups.com >> >> <https://groups.google.com/d/msgid/influxdb/aa778b27-3257-42f3-96a5-3b7c3158ad1f%40googlegroups.com?utm_medium=email&utm_source=footer> >> . >> For more options, visit https://groups.google.com/d/optout. >> > > > > -- > Sean Beckett > Director of Support and Professional Services > InfluxDB > -- Remember to include the InfluxDB version number with all issue reports --- You received this message because you are subscribed to the Google Groups "InfluxDB" group. To unsubscribe from this group and stop receiving emails from it, send an email to [email protected]. To post to this group, send email to [email protected]. Visit this group at https://groups.google.com/group/influxdb. To view this discussion on the web visit https://groups.google.com/d/msgid/influxdb/d03b8f58-af24-4a3b-b240-0ad88bb27a74%40googlegroups.com. For more options, visit https://groups.google.com/d/optout.
