I am trying to write a function that would compare one table to a number of other tables in Mysql and remove any duplicates found. This is for tables of email addresses where I want to remove any dups found.
Example:
Master list - compare to list1, list2, list3, and so on and remove matches found from list1, list2, list3 etc. *not* from Master list.
Does anyone know of any such beast before I set out to reinvent it?
Thanks.
Chris
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