Re: [HACKERS] Re: [INTERFACES] Group/Order by not in target - Was [NEW ODBC DRIVER]
Bruce Momjian <maillist@candle.pha.pa.us>
From: Bruce Momjian <maillist@candle.pha.pa.us>
To: sferac@bo.nettuno.it (Jose' Soares Da Silva)
Cc: hackers@postgreSQL.org (PostgreSQL-development)
Date: 1998-05-15T13:51:07Z
Lists: pgsql-hackers
> > On Mon, 11 May 1998, David Hartwig wrote: > > > > It is not very difficult to produce this problem in MS Access 97; I > > expect my users to beat me up pretty good on this issue. Thus, I plan to > > look into making the fix in the backend myself. Conceptually it does not > > seem too difficult. > > > > 1. Add a hidden attribute to the target node structure. > > > > 2. Modify the parser/analyzer to add any attributes in the GROUP/ORDER BY > > clause that are missing from the target list, to the target list with the > > hidden attribute set. > This would be a great enhancement! > SQL92 specifies that columns in the ORDER BY must appear in the > SELECT clause, but this limitation has no sense, indeed many databases > already implement this enhancement. > Go for it! There already is code in the backend for Junk fields to be removed. Not sure what it does, though. -- Bruce Momjian | 830 Blythe Avenue maillist@candle.pha.pa.us | Drexel Hill, Pennsylvania 19026 + If your life is a hard drive, | (610) 353-9879(w) + Christ can be your backup. | (610) 853-3000(h)