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我有一个 influxDB ，testdb我正在尝试对具有fieldtype不同.fieldTypefieldType

设置

> create database testdb
> use testdb
Using database testdb
> insert rpm,path=P1 data=200
> insert rpm,path=P2 data=100
> insert rpm,path=P1 data=300
>
> insert load,path=P1 data=77
> insert load,path=P1 data=89
>
> insert mode,path=P1 data="AUTOMATIC"
> insert mode,path=P2 data="MANUAL"
> insert mode,path=P1 data="AUTOMATIC"
>
> insert execution,path=P1 data="ACTIVE"

现在我有 4 个测量值，即 , rpm, load, 。他们是：modeexecutionfieldType

> show field keys on testdb
name: execution
fieldKey fieldType
-------- ---------
data     string

name: load
fieldKey fieldType
-------- ---------
data     float

name: mode
fieldKey fieldType
-------- ---------
data     string

name: rpm
fieldKey fieldType
-------- ---------
data     float

我可以做什么

我能够从多个相同的测量中成功获得结果fieldType。

> select last(data) from mode, execution
name: execution
time                last
----                ----
1564000155710480300 ACTIVE

name: mode
time                last
----                ----
1564000155694460700 AUTOMATIC
>
> select last(data) from rpm, load
name: load
time                last
----                ----
1564000155650446100 89

name: rpm
time                last
----                ----
1564000155620293100 300

问题

我无法将所有 4 个测量值合并到一个查询中。下面的查询应该返回所有 4 个测量的结果，而不是只返回float类型的结果。

> select last(data) from mode, execution, rpm, load
name: load
time                last
----                ----
1564000155650446100 89

name: rpm
time                last
----                ----
1564000155620293100 300

如果我更改顺序，我会得到相同的结果：

> select last(data) from rpm, load, mode, execution
name: load
time                last
----                ----
1564000155650446100 89

name: rpm
time                last
----                ----
1564000155620293100 300

有没有办法让我获得结果string并float输入一个结果集？

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