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Compare two record
Hi all,
I have a database to store information about person(Exp: name, sex, birthday...). The information of one person is not stored in one table, it is stored in some table. I want to count the same column's value of two person (same name, same sex...). I did it but it take too much time, very slow when the number of person is so big( I compare column with column, increase count variable if two column is the same but i think my algorithm is not optimal). Could you teel me how to do this to speed up?
Thankyou so much!
Best regard!
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Can you post your current methodology -- the actual code?
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