一.查看tag

> show  tag keys  from fan_param_tb;
name: fan_param_tb
tagKey
------
c_name
code
cur_value_alarm
data_point_code
fan_code
fan_parameter_type
id
ord
recordTime
residual_error_alarm
> 

二.查看field信息

> show  field keys from fan_param_tb;
name: fan_param_tb
fieldKey                 fieldType
--------                 ---------
contribution             float
cur_predict              float
cur_value                float
cur_value_threshold      float
residual_error           float
residual_error_threshold float
similarity               float
unit                     string