select dexin, code,new, (select avg(new) from tb1 where dexin between dexin-3 and dexin)as mavg from tb1;
the result is only one value, and table only one: tb1 I don't know why have tbl b and tbl a >From: "Keith Medcalf" <kmedc...@dessus.com> >To: "General Discussion of SQLite Database" <sqlite-users@sqlite.org> >Subject: Re: [sqlite] how to update the Moving average value >Message-ID: <545265ad8b7cfb45b4f7f9160b8cc...@mail.dessus.com> >Content-Type: text/plain; charset="us-ascii" > > >select id, sales_vol, (select avg(sales_vol) as mavg > from tbl b > where b.id between a.id - 3 and a.id) > from tbl a; _______________________________________________ sqlite-users mailing list sqlite-users@sqlite.org http://sqlite.org:8080/cgi-bin/mailman/listinfo/sqlite-users
