查询返回结果中小数点后面的值被自动截取了 #3630

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1. HTHou commented on Jul 27, 2021

   

   HTHou

   on Jul 27, 2021

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   show timeseries看看序列的详细信息？
2. juice411 commented on Jul 27, 2021

   

   juice411

   on Jul 27, 2021 via email

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   ------------------ 原始邮件 ------------------ 发件人: "apache/iotdb" ***@***.***>; 发送时间: 2021年7月27日(星期二) 晚上7:43 ***@***.***>; ***@***.******@***.***>; 主题: Re: [apache/iotdb] 查询返回结果中小数点后面的值被自动截取了 (#3630) show timeseries看看序列的详细信息？ — You are receiving this because you authored the thread. Reply to this email directly, view it on GitHub, or unsubscribe.
3. juice411 commented on Jul 27, 2021

   

   juice411

   on Jul 27, 2021

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4. HTHou commented on Jul 27, 2021

   

   HTHou

   on Jul 27, 2021

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   这是因为使用了 RLE编码方式对于浮点数是有损编码导致的，如果需要保证精度，对于浮点数可以使用 gorilla 编码。
5. juice411 commented on Jul 27, 2021

   

   juice411

   on Jul 27, 2021

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   如何对线上系统做修改？修改完后影响已归档数据吗
6. qiaojialin commented on Jul 27, 2021

   

   qiaojialin

   on Jul 27, 2021

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   改 iotdb-engine.properties 里的这个参数：
   float_precision=6
   反注释重启生效。不影响已归档数据，只影响新写的数据。

   👍React with 👍1Reacted by Haonan
7. juice411 commented on Jul 27, 2021

   

   juice411

   on Jul 27, 2021

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   这个方案可以，多谢！
8. qiaojialin

   closed this as completedon Jul 27, 2021
9. apache

   locked and limited conversation to collaborators on Aug 24, 2021