1.tag和tagvalue只能是字符串
filed的值可以是字符串或数值或布尔值
filedvlaue不同数据类型,insert写法https://docs.influxdata.com/influxdb/v1.6/write_protocols/line_protocol_reference/
filedvalue是字符串类型,insert时用双引号,查询时用单引号
https://blog.youkuaiyun.com/vtnews/article/details/80195033
https://blog.youkuaiyun.com/liurui_wuhan/article/details/79001756