hide Tables from a Dashboard if there are no results. is there a generic command. I have around 900 tables in a dashboard and i refuse to set 900 different tokens.
see in the Splunk Dashboard Examples App (https://splunkbase.splunk.com/app/1603/) there's a sample to do what you need: "Null Search Swapper".
If some of your tables use the same search, you might be able to use a common token, but there is no generic command to do this.
You could consider writing a script to edit the source to place all the code necessary, or just copy/paste the code in and go through and edit each one (or set up a script to do this).