I don't see any issue with #2 and it might be the simplest one. But all will depend on your read pattern. If you need to scan by domain, 1 is better. I you need to list the emails without knowing it, 2 might be better. If you only access it given a specific address, 3 can be good.
So I will say, all depend on what you want to do with it... 2013/2/13, Nurettin Şimşek <[email protected]>: > I want to search email adress equality. There are many many domains not > only yahoo. > > What is disadvantages of using hashing? >
