Sql Queries in Grafana

Hi everyone,
I am new here and exploring potential of Grafana for my company for data visualization.
How easy is it to write SQL queries here in Grafana ? I just tried one somewhat complex query and wasn’t able to work around with time series and graphs.
Beginners insights would be really helpful.

It depends whether you are trying to do something simple or complex. Simple things are easy to do, complex things are more difficult.