Use this SQL script to loop through each database on an instance and run a query against each database.
--This query will return a listing of all tables in all databases on a SQL instance:
DECLARE @command varchar(1000)
SELECT @command = 'USE ? SELECT DB_Name(), name FROM sysobjects WHERE xtype = ''U'' ORDER BY name'
EXEC sp_MSforeachdb @command
We're available if you need assistance implementing custom SQL code. Contact us for help!