Flux query language and Influxdb basics

In order to understand some of my future videos coming, I wanted to lay the basics of InfluxDB and Flux query language. I go into how Flux 2.x differs from 1.x and also traditional SQL, what the data structure looks like and how to build simple queries in Flux.

Wiki documentation on Influx setup: https://github.com/nygma2004/km/wiki/...

My video on the new server build:    • New Node-Red server  
Influxdb, Telegraf and Grafana setup:    • InfluxDB 2.1, Grafana and Telegraf in...  

Chapters:
0:00 Intro
0:43 1.x and 2.x, databases, buckets and retention policies
5:45 Measurements, tag and fields
11:16 Time window and aggregation period
13:22 How data is filtered
20:48 Flux query language
37:10 Outro