MySQL user-defined variables are used to pass values from one statement to another. They are connection specific. Values cannot be created by one client and used by another client. The variables ...

I am having a hell of a time getting what seems like a simple running total to work with a variable in MySQL. My original query looks like this (table/column names are simplified for readability ...

How to create a container with environment variables. Let’s use MySQL as an example of assigning environment variables. Log into Portainer and click Containers in the left navigation.