Run this code, copy the output to a query window, look over very carefully to make sure that those are the tables you want drop, and then execute it.SELECT 'drop table ' + QUOTENAME(TABLE_SCHEMA) + '.' + QUOTENAME(TABLE_NAME)
FROM INFORMATION_SCHEMA.TABLES t
WHERE
TABLE_NAME LIKE 'cas%'
OR TABLE_NAME LIKE 'cat%'
OR TABLE_NAME LIKE 'cps%'