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Re: Re: lug-bg: MySQL query (2)


  • Subject: Re: Re: lug-bg: MySQL query (2)
  • From: tpenev@xxxxxx (Teodor Penev)
  • Date: Tue, 19 Nov 2002 17:22:18 +0200 (EET)



Ami, ne si prochel dobre post-a mi Georgi :)
Ne pitah kak da se izkarvam ot db otdelno parents & children 
threads, a zaedno:

parent2
child0
childr1
...
parent1
child0
child1
...

v tozi vid.

>Tova koeto go pishesh go pishesh po mnogo greshen nachin. Triabva
 >ti neshto ot sorta (mnogo elementarno i dyrveno napraveno v sluchaia)
 >
 >create table posts (
 >	id	serial,
 >	parent	int default null
 >	ts	int,
 >	subj	text,
 >	text	text
 >);
 >
 >v parent poleto pishesh na koi post e otgovora. Ako e null
 >znachi e tema.
 >
 >posle imash pokazvane na postove (50-te nai-novi)
 >
 >select * from posts where parent is null order by ts desc limit 50;
 >
 >imash i pokazvane na thread
 >
 >select * from posts where id = XXX or parent = XXX order by ts;
 >
 >Gore dolu tova e ( - greshkite :)
 >
 >Estestveno v istinski forum shte e hubavo da pazish BODY-to na posta
 >otdeleno ot subject (za po byrzo tyrsene) i shte imash oshte danni
 >koi go e postnal IP, proxy, etc.
 >
 >Otidi na www.phorum.org i si svali soft-a. Razgledai strukturata na
 >DB-to i go razberi. Tozi forum raboti s mysql i postgres taka che niama
 >da sreshtnesh "mysql only braindamage".
 >
 >
 >-- 
 >Georgi Chorbadzhiyski
 >http://georgi.unixsol.org/
 >
 >============================================================================
 >A mail-list of Linux Users Group - Bulgaria (bulgarian linuxers).
 >http://www.linux-bulgaria.org - Hosted by Internet Group Ltd. - Stara Zagora
 >To unsubscribe: http://www.linux-bulgaria.org/public/mail_list.html
 >============================================================================
 >

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