Hi all,
I have a table to store information about one person(firstname,lastname,birthday,sex,address,...). My table have a lot of record (about 1000000 rec). Could you show me how to compare one record with the other in this table(to count the number of the same column)? I have tried to test compare but it very slowly. I think my algorithm is not optimal.
Can you help me?(show me the algorithm) Thanks!