在点火中查找原始标签的Max和Stdev

Question

I have raw tags:

Requirements are:

a) user enters Hours. b) Based on hours I get a value of "Max" in those hours and a Value of "St Dev" during the given time period.

Please see image: Desired Result

Database is stored as following schema:

Database schema

Answer 1

You'll want to use an Expression Tag for this. Check out Ignition's video on this: Creating Expression Tags . You link "Desired Result" is an image of a database schema, not the desired result. If you update that image I can help you further. You want to use one expression tag for the Max value in your data, and another expression tag for the St. Dev. in your data.