Re: [SQL] Query for duplicates.
От | Matthew Hagerty |
---|---|
Тема | Re: [SQL] Query for duplicates. |
Дата | |
Msg-id | 4.1.19990805164505.009d2830@mail.venux.net обсуждение исходный текст |
Ответ на | Query for duplicates. (Matthew Hagerty <matthew@venux.net>) |
Список | pgsql-sql |
Thanks, that works great! Matthew At 04:19 PM 8/5/99 -0400, John M. Flinchbaugh wrote: >On Thu, 5 Aug 1999, Matthew Hagerty wrote: >> I found myself in an unusual situation today. I need a query to display >> only customers with addresses that appear more than once. Usually I am >> having to get unique addresses, etc. at which I have become very good, but >> this one is giving me a run for. >> What I need is something like this: >> create table customer ( >> custdate date, >> name varchar(30), >> address varchar(30), >> city varchar(20), >> state varchar(2), >> zip varchar(10)); >> select address,city,state,zip from customer >> where custdate<='05-30-1999' >> group by address having count(address)>1; > >select address,city,state,zip from customer >where custdate<='05-30-1999' >group by address,city,state,zip >having count(*)>1; > >____________________}John Flinchbaugh{______________________ >| -> glynis@hjsoft.com <- john@cs.millersv.edu | >| glynis@netrax.net http://www.hjsoft.com/~glynis/ | >~~Powered by Linux: Reboots are for hardware upgrades only~~ > >
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