Re: have you seen this?
От | Elein Mustain |
---|---|
Тема | Re: have you seen this? |
Дата | |
Msg-id | 20040524072613.B30973@tulip.norcov.com обсуждение исходный текст |
Ответ на | Re: have you seen this? (Jan Wieck <JanWieck@Yahoo.com>) |
Список | pgsql-advocacy |
Remember that MySQL for better or worse is tacking on features that Postgres was designed for 15 years ago. You could always do subqueries of a kind by using functions in the where clause. Surfacing the SQL only in 7.1 surprises me. elein On Mon, May 24, 2004 at 10:17:37AM -0400, Jan Wieck wrote: > Martin Marques wrote: > > > El Sáb 22 May 2004 20:00, Robert Bernier escribió: > >> http://det-dbalice.if.pw.edu.pl/det-dbalice/ttraczyk/db_compare/db_compare. > >>html > > > > I don't know when they wrote this but...: > > > > > > Subqueries in FROM clause > > > > Possibility of using subquery (nested query) in FROM clause of SQL query. > > > > MySQL: > > No. Will be added in next versions. > > > > Oracle8: > > Yes. > > > > Postgres: > > No. The feature will be supported from version 7.1. > > > > > > When was 7.1 released? 2001? > > Yeah, and funny enough, it's still "to be" included in the next version > of MySQL ... and what they have so far for 4.1 (in the 4.1.1 Alpha) is > one implementation of subselects for the FROM clause and apparently > another one for the WHERE clase (this is an assumption based on the fact > that subselects support different language features if they are in the > FROM clause or the WHERE clause). Fortunately I don't have to maintain > any of that code. > > > Jan > > -- > #======================================================================# > # It's easier to get forgiveness for being wrong than for being right. # > # Let's break this rule - forgive me. # > #================================================== JanWieck@Yahoo.com # > > > ---------------------------(end of broadcast)--------------------------- > TIP 4: Don't 'kill -9' the postmaster
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