reference available variables like data source in custom query

[joemoe]

when we use a custom query it would be useful to have variables like $datasource available. is this possible?

[alexanderzobnin]

Can you explain? Where do you want to see that variables?

[joemoe]

following scenario:

• i create a graph
• i chose a crate datasource
• i toggle the edit mode
• i get an empty line
• in this line i'd like to reference things like datasource so instead of writing select * from schema.table i'd like to write select * from $datasource as this is already defined.

does this help you?

[alexanderzobnin]

I understand what you want. I've been confused by variable name $datasource because it used by grafana. We can choose another name like $table or something else.