Grafana queries for my Kubernetes App

Hi all,

I setup a Grafana server on Kubernetes. My data are on a SQL server.

1 month later, my Graphs show me fake data ( generated by Grafana "Test data: random walk
" ) instead of my real data.
My connection to my SQL server is OK
But my queries are empty.

Are the queries stored into the Grafana File storage ? Where ?

Where can i see the file with the queries ?