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Posted to dev@iotdb.apache.org by "lming (Jira)" <ji...@apache.org> on 2020/01/19 08:32:00 UTC

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

lming created IOTDB-430:
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             Summary: 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


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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