> At 16:11 +0100 1/9/03, Rafal Jank wrote: > >Hi! > >I have two tables: > >CREATE TABLE `pokoje` ( > > `nrpok_p` char(10) NOT NULL default '', > > `nip_h` int(10) NOT NULL default '0', > > `lozka_p` char(2) default NULL, > > `tv_p` char(1) default NULL, > > `lazienka_p` char(1) default NULL, > > `cena_p` int(10) default NULL, > > `zaliczka_p` int(10) default NULL, > > PRIMARY KEY (`nrpok_p`,`nip_h`), > > KEY `nip_h_index` (`nip_h`,`nrpok_p`), > > FOREIGN KEY (`nip_h`) REFERENCES `hotele` (`nip_h`) ON DELETE CASCADE > >) TYPE=InnoDB; > > > > CREATE TABLE `rezerwacje` ( > > `id_r` int(10) NOT NULL default '0', > > `pesel_k` int(11) default NULL, > > `nip_h` int(10) NOT NULL default '0', > > `nrpok_p` char(10) NOT NULL default '', > > `data_r` date default NULL, > > `od_r` date default NULL, > > `do_r` date default NULL, > > `cena_r` int(10) default NULL, > > `zaliczka_r` int(5) default NULL, > > `zaplac_r` char(1) default NULL, > > `wplaczal_r` char(1) default NULL, > > PRIMARY KEY (`id_r`), > > KEY `nip_h_index` (`nip_h`,`nrpok_p`) > >) TYPE=InnoDB; > > > >Now, when I try: > >alter table rezerwacje add foreign key (nip_h,nrpok_p) references > >pokoje(nip_h,nrpok_p); > >I get: > >ERROR 1005: Can't create table './test/#sql-932_4.frm' (errno: 150) > > > >Why? > > Circular foreign key relationships? Removing the FOREIGN KEY > clause from the definition of pokoje allows the ALTER TABLE to work.
They are not circular - there is another table hotele that I didn't put in prevoius post: CREATE TABLE `hotele` ( `nip_h` int(10) NOT NULL default '0', `nazwa_h` varchar(100) NOT NULL default '', `miasto_h` varchar(50) NOT NULL default '', `kodpocz_h` int(5) NOT NULL default '0', `adres_h` varchar(50) default NULL, `email_h` varchar(50) default NULL, `kontobank_h` int(32) default NULL, `wyprzedaz_h` varchar(10) default NULL, `standard_h` varchar(20) default NULL, `opis_h` varchar(200) default NULL, PRIMARY KEY (`nip_h`) ) TYPE=InnoDB; -- _/ _/ _/_/_/ ----- Rafał Jank [EMAIL PROTECTED] ----- _/ _/ _/ _/ _/ Wirtualna Polska SA http://www.wp.pl _/_/_/_/ _/_/_/ ul. Traugutta 115c, 80-237 Gdansk, tel/fax. (58)5215625 _/ _/ _/ --------==* http://szukaj.wp.pl *==---------- --------------------------------------------------------------------- Before posting, please check: http://www.mysql.com/manual.php (the manual) http://lists.mysql.com/ (the list archive) To request this thread, e-mail <[EMAIL PROTECTED]> To unsubscribe, e-mail <[EMAIL PROTECTED]> Trouble unsubscribing? Try: http://lists.mysql.com/php/unsubscribe.php
