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Posted to reviews@iotdb.apache.org by GitBox <gi...@apache.org> on 2020/07/04 02:42:41 UTC

[GitHub] [incubator-iotdb] jixuan1989 commented on issue #1425: SQL执行时间怎样优化到毫秒级别？还是说根本就不可能？

jixuan1989 commented on issue #1425:
URL: https://github.com/apache/incubator-iotdb/issues/1425#issuecomment-653711224


   > select * from root.position where time > 1559179819000 limit 10
   如果limit10的话，不应该6s吧？ @qiaojialin 
   
   > 18999994条数据 count 下竟然将近9秒。
   请问这个有乱序数据吗？ （data/data/unsequence 目录是否未空？）
   另外，目前主分支还没合并PISA索引，#1439
   


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