Depending on what database you are using, the database may be able to handle this quite easily.
MS SQL Server can handle this via a unique index. Take a look at INGORE_DUP_KEY. I don't know if other DB's have access to something like this, but I'd have to think most of them do. -jeff >I've got an application that a client uses to import email list from >Excel spreadsheets into a database for use to send e-newsletters to >specific groups. > >The database has grown quite large, and when importing list to specific >group at this point, they're forgetting if a particular email address >had already been added, and needs something that prevents duplicates >from being added to the list. ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~| Adobe® ColdFusion® 8 software 8 is the most important and dramatic release to date Get the Free Trial http://ad.doubleclick.net/clk;192386516;25150098;k Archive: http://www.houseoffusion.com/groups/CF-Talk/message.cfm/messageid:305952 Subscription: http://www.houseoffusion.com/groups/CF-Talk/subscribe.cfm Unsubscribe: http://www.houseoffusion.com/cf_lists/unsubscribe.cfm?user=11502.10531.4
