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csv数据导入/join/group by实践体验 #96

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fanyunli opened this issue Jul 17, 2019 · 7 comments
Open

csv数据导入/join/group by实践体验 #96

fanyunli opened this issue Jul 17, 2019 · 7 comments
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@fanyunli
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@fanyunli fanyunli commented Jul 17, 2019

数据导入的时候,数据中时间戳字段必须是有顺序的,否则只能导入部分数据。但在时间戳有序的情况下,依旧有小部分数据导入失败,报invalid next size (normal)错误,暂且还没明白什么问题,期待其他人的回答。
join的功能,目前还未开发出来,期待。
group by功能,目前在超级表中可以使用。
希望能对大家有帮助。

@mseaspring
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@mseaspring mseaspring commented Jul 18, 2019

x谢谢

@amosbird
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@amosbird amosbird commented Jul 19, 2019

group by功能,目前在超级表中可以使用。

我在文档没有看到这个功能, 能具体说说吗? 谢谢

@plum-lihui
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@plum-lihui plum-lihui commented Jul 19, 2019

@fanyunli “数据导入的时候,数据中时间戳字段必须是有顺序的,否则只能导入部分数据。但在时间戳有序的情况下,依旧有小部分数据导入失败,报invalid next size (normal)错误,暂且还没明白什么问题,期待其他人的回答。”
这个问题能给点更详细的信息吗?比如:导入方法,是shell下命令导入,还是写的app(用的java写的,还是c写的)? 如果方便的话,是否可以将数据文件提供给我们测试一下?
多谢!

@714139391
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@714139391 714139391 commented Jul 23, 2019

超级表group by 会报错:TSDB error:invalid SQl:illegal column name,怎么解决

@hjxilinx
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@hjxilinx hjxilinx commented Jul 23, 2019

groupby 使用非法的列名称吧?现在的group by还只能针对表的 tag来group by。后面升级会提供针对状态量的group by功能。

@714139391
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@714139391 714139391 commented Jul 24, 2019

我根据表的tag来group by 也是报一样的错啊

@hjxilinx
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@hjxilinx hjxilinx commented Jul 25, 2019

@714139391 可否提供更详细的信息,可以将详细的信息mail 到 hjliao@taosdata.com, 邮件中可附上您的联系方式。便于我们更好协助您查找问题。

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