Tried your SQL, but it doesn't look right and didn't run. Will see if I can alter it.
RBS On Tue, Nov 16, 2010 at 11:17 PM, Petite Abeille <petite.abei...@gmail.com> wrote: > > On Nov 16, 2010, at 11:55 PM, Bart Smissaert wrote: > >> This seems to work fine, > > Then you are golden :) > >> but I am not sure if this SQL is correct and >> if the results will always be correct and have a feeling >> that there must be a better construction. > > > >> Any suggestions? > > Nothing very meaningful, but you could rewrite the 'in' clause as a 'join' to > avoid all these concatenations, e.g.: > > select t1.patient_id > from table1 t1 > join ( > select table1.address, > min( table1.date_of_birth ) as date_of_birth > from table1 > group by table1.address > ) > as t2 > join t2.address = t1.address > and t2.date_of_birth = t1.date_of_birth > > > _______________________________________________ > sqlite-users mailing list > sqlite-users@sqlite.org > http://sqlite.org:8080/cgi-bin/mailman/listinfo/sqlite-users > _______________________________________________ sqlite-users mailing list sqlite-users@sqlite.org http://sqlite.org:8080/cgi-bin/mailman/listinfo/sqlite-users
