Remove me
On Wed, Feb 13, 2019, 12:54 PM Jose Isaias Cabrera <jic...@outlook.com wrote: > > James K. Lowden, on Tuesday, February 12, 2019 11:39 AM, wrote... > >On Tue, 12 Feb 2019 15:05:29 +0000 > >Jose Isaias Cabrera <jic...@outlook.com> wrote: > > > >> >SELECT * From t WHERE datestamp = "20190208" > >> > >> Ok, Simon, I'll bite; :-) Imagine this table: > >> > >> t (n INTEGER PRIMARY KEY, a, b, c, d, e, idate) > > > >That's better. > > > >> how would I find the differences in the fields based on the different > >> idate? > > > >select ... > >from t as now join t as then > >on now.idate = '20190208' > >and then.idate = '20190207' -- note single quotes > >and ... -- other things that match > >where ... --- things that don't match > > > >Can't be more specific than that when the question is "find the > >differences". > > This is the last fix on this, > > select new.a,old.b,new.b, 'difference in column b' as info from t as new > LEFT JOIN t as old ON > new.idate = '2019-02-12' > AND old.idate = '2019-02-11' > AND new.a = old.a > WHERE > new.b != old.b > UNION ALL > select new.a,old.c,new.c, 'difference in column c' as info from t as new > LEFT JOIN t as old ON > new.idate = '2019-02-12' > AND old.idate = '2019-02-11' > AND new.a = old.a > WHERE > new.c != old.c > UNION ALL > select new.d,old.d,new.d, 'difference in column d' as info from t as new > LEFT JOIN t as old ON > new.idate = '2019-02-12' > AND old.idate = '2019-02-11' > AND new.a = old.a > WHERE > new.d != old.d > UNION ALL > select new.a,old.e,new.e, 'difference in column e' as info from t as new > LEFT JOIN t as old ON > new.idate = '2019-02-12' > AND old.idate = '2019-02-11' > AND new.a = old.a > WHERE > new.e != old.e > ORDER by new.a; > > Result, > > p001|2|4|difference in column c > p001|4|3|difference in column e > p002|2|4|difference in column c > p003|2|4|difference in column c > p004|2|4|difference in column c > p005|5|3|difference in column b > p005|2|3|difference in column c > > This is the best way of doing this, correct? Thanks. > > josé > > PS: I've learn a few things in this last 7 days or so. Thanks so much > you Gurus. > > > _______________________________________________ > sqlite-users mailing list > sqlite-users@mailinglists.sqlite.org > http://mailinglists.sqlite.org/cgi-bin/mailman/listinfo/sqlite-users > _______________________________________________ sqlite-users mailing list sqlite-users@mailinglists.sqlite.org http://mailinglists.sqlite.org/cgi-bin/mailman/listinfo/sqlite-users
