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velvettiger
Posting Yak Master
115 Posts |
 Posted - 2008-06-16 : 14:13:31
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Hi guys,I was just wondering if any one knows how to find duplicate keys using more than one field. I used the below key to find those people who exists in list1 but don't exists in list2. I realized that the results had some duplicates which was expected but how do I then find all those duplicate people. I know how to do it if there was a primary key present I would have done a count (distinct cardnumber) > 1 and i would have done the select statement like this distinct cardnumber, but how do I do it with more that one key?? |
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tkizer
Almighty SQL Goddess
38200 Posts |
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Finding duplicates using more that one key