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Posted to dev@iotdb.apache.org by "Jialin Qiao (Jira)" <ji...@apache.org> on 2020/03/03 09:15:00 UTC

[jira] [Closed] (IOTDB-430) using star to get records count is poor efficiency than using integer

     [ https://issues.apache.org/jira/browse/IOTDB-430?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel ]

Jialin Qiao closed IOTDB-430.
-----------------------------
    Resolution: Not A Problem

> using star to get records count is poor efficiency than using integer
> ---------------------------------------------------------------------
>
>                 Key: IOTDB-430
>                 URL: https://issues.apache.org/jira/browse/IOTDB-430
>             Project: Apache IoTDB
>          Issue Type: Improvement
>            Reporter: lming
>            Priority: Major
>
> when I want to get records count in postgresql and other relational database , I will using form of count(1) for high efficiency than count(*)
> But in release 0.9.0 I  only could get count by star .
> select count(*) is poor efficiency than  select count(1)



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