Hi, Thanks! One thing we need to pay attention, we support time < 0. So It's better to record a [Long.MIN_TIME, T] for time <= T
Bests, -- Jialin Qiao School of Software, Tsinghua University 乔嘉林 清华大学 软件学院 > -----原始邮件----- > 发件人: "Wei Shao" <kofsh...@163.com> > 发送时间: 2020-06-23 15:31:45 (星期二) > 收件人: "dev@iotdb.apache.org" <dev@iotdb.apache.org> > 抄送: > 主题: I've submitted a PR for issue IOTDB-627 > > Hi all, > > > I submitted a PR[1] to support range delete for a timeseries. JIRA issue is > [2]. > > > Now the "delete from ..." SQL support specifying a range in the where > expression. The where expression may contain Lt/LE, Gt/GE, EQ, AND with two > Lt/LE, Gt/GE, EQs. > The deletion range is represented by a [startTime, endTime] interval in > current implementation. > > > The record format in Mods file has been changed as well. For a deletion SQL: > "delete from root.sg.d0.s0 where time <= 100 and time >= 50" > Assuming the version number is 10, then it will leave a line "root.sg.d0.s0, > 10, 50, 100" in the Mods file. > For Mods files with only one "endTime" timestamp in previous version, the > query engine will recognize it as having a [0, endtime] deletion range. > > > Please leave your opinions. > > > [1] https://github.com/apache/incubator-iotdb/pull/1400 > [2] https://issues.apache.org/jira/browse/IOTDB-627 > > > --------------------------- > Thanks, > Wei
