> Not being so well-versed in indexing (just starting using > those in MySQL 5), I don't understand how having a unique > index on the photo_filename column will prevent an insert of > a duplicate value. > > Is that function a part of creating a unique index? Does it > cause MySQL 5 to screen inserts for duplicates and reject them?
Yes. That's why it's called a "unique" index. Dave Watts, CTO, Fig Leaf Software http://www.figleaf.com/ Fig Leaf Training: Adobe/Google/Paperthin Certified Partners http://training.figleaf.com/ WebManiacs 2008: the ultimate conference for CF/Flex/AIR developers! http://www.webmaniacsconference.com/ ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~| 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:305433 Subscription: http://www.houseoffusion.com/groups/CF-Talk/subscribe.cfm Unsubscribe: http://www.houseoffusion.com/cf_lists/unsubscribe.cfm?user=11502.10531.4
