Hi, I am currently trying out InfluxDB and really like it so far. My current test case is rebuilding the top of the book from full market depth. For this I am using one day of data for seven instruments.
My schema layout is as follows: tags: sym, side (bid or ask) fields: price, volume, lvl, noOrders, seqNo measurement: book (I am currently using version 0.13) Coming from a kdb+ background somethings are not 100% clear to me how to model/design/do them in InfluxDB. For example I would like to build 1h buckets from the data. My first naive approach was: select first(price), last(price), mean(price) from book where time > '2014-10-06T00:00:00Z' and time < '2014-10-07T00:00:00Z' and sym=abc group by time(1h) which did not result in any data. While select first(price), last(price), mean(price) from book where time > '2014-10-06T00:00:00Z' and time < '2014-10-07T00:00:00Z' group by time(1h) does (removing the and sym=abc). Which is not obvious to me why. Further it generates all ours between those two times - not only the ones for which I have data. Not saying it is wrong, just confusing for me... :) Is there a way to avoid this? But, my real problem is that I cannot put the instrument in the where condition. Is this related to my schema? Is sym not be allowed to be a tag in this case? Best, Marc -- 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 influxdb+unsubscr...@googlegroups.com. To post to this group, send email to influxdb@googlegroups.com. 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/65dc6a8c-6823-43bd-8972-d09bac833811%40googlegroups.com. For more options, visit https://groups.google.com/d/optout.
