How to plot MySQL data which using timestamp (milliseconds) and volt value?

Hi,
I’m having a big confusion about the query to make my data from MySQL to be plot in Grafana. Here is my setting in my server.

Database: MySQL
Column 1 : id (integer) but not auto-increment
Column 2 : timestamp (YYYY-MM-DD hh:mm:ss.000) 000 = milliseconds
Column 3 : volt_measure (integer)
Column 4 : volt_D (integer) – different value between previous and recent

image

I’m using timestamp format which perform by MySQL and try to plot it in graph but the problem is there is no function that I can use to plot by using my true value. In grafana just show only Aggregate which have only avg, count, min, max, sum, stddev and variance only. I don’t want my data to plot into avg, count, min …etc but with my true exact value.


i don’t know why my data become float and the timestamp become inaccurate. Somebody help me.

Do I need to do a custom writing query? or else?