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Julian Feinauer commented on IOTDB-430: --------------------------------------- Agree with [~haonan] here. In an RDBMS the query is different for count(*) and for count(1) and in our case it would be equal (and as pointed out by [~haonan] it would be ambigious with a count on a specific series). So I would opt for not implementing this. > 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) -- This message was sent by Atlassian Jira (v8.3.4#803005)