I need to be able to use variables in table names - I basically have the same set of tables used for different types of data, so I would like to just have one dashboard and swapping between all types instead of always having to set up multiple identical dashboards.
My query is something like:
select * from table_$variable_name;
Where my list of possible variable is something like cat, dog, bird
I can seem to make this work, if I only put the variable as shown above I get the following error
Error 1146: Table 'table_$variable_name' doesn't exist
If I enclose it in curly brackets, I get this error instead.
Error 1064: You have an error in your SQL syntax; check the manual that corresponds to your MySQL server version for the right syntax to use near '{bird}' at line 1
(i.e. with the selected variable actually being visible this time)
I'm not sure if the issue is having underscores in the table names, I tried putting underscores around my variables too to check and I had no luck with that.
Another thing I tried was gradually adding on to the table name, so e.g.
select * from table_$variable;
Still returns an error, but I can see the table name starting to form correctly
Error 1146: Table 'table_bird_' doesn't exist
However, as soon as I add another underscore, the variable is not picked up abymore ```Error 1146: Table 'table_$variable_' doesn't exist``
I'm sure it's something silly I am missing in the syntax of the query - anyone has any suggestions?
Using this https://grafana.com/docs/grafana/latest/variables/templates-and-variables/ for reference