I have around 20 tables in my database. I want to count every row of every table using COUNT and get a total. I have tried doing a separate select statement for each table then using UNION but I cannot find a way to join the results to get just one total number. Another thing I want to mention is that a lot of the tables are empty, but will later have data in them. Could someone please give me an idea of what kind of query to do? Thanks.