Re: [firebird-support] Restore without constraints
Hi Mark, I don't want to delete the column, just the constraint. So I can add a new PK. Since there are several FKs referencing to that PK, I have to delete the FKs first. That is the main problem. I'm just looking for a method to delete all constraints. After that I can cleanly add new ones. Regards Martin
Re: [firebird-support] Restore without constraints
On 22-10-2015 11:20, Köditz, Martin martin.koed...@it-syn.de [firebird-support] wrote: > is it possible to restore a database without constraints? Or is there > another way to do this? I just want do delete each primary key in the db. Could you explain exactly what you are trying to achieve? For example, if you say "delete each primary key", do you mean deleting the column, setting the value to null, or dropping the primary key constraint? Mark -- Mark Rotteveel
Re: [firebird-support] Restore without constraints
Hi Rik, thank you for the info. This helps a lot. The reason why I want to delete the constraints are wrong namings. The process is following: 1. Delete foreign keys 2. Delete primary keys 3. Create new keys I think I can do that via execute blocks as you have shown. Regards Martin
Re: [firebird-support] Restore without constraints
Köditz, Martin martin.koed...@it-syn.de [firebird-support] wrote: > is it possible to restore a database without constraints? Or is there > another way to do this? I just want do delete each primary key in the db. Is this on a healthy DB? I'm not sure if -I disables the constraints in that case. You can use -I -N. (-N for disabling the constraints). After that you can remove the primary records. See http://www.firebirdsql.org/manual/gbak-cmdline.html But then what If you activate the indexes and constraints again you face the same problem (you can't because of the sub-records). If the DB was build correctly there should have been a ON DELETE CASCADE on the constraint. Maybe you still can change the constraints with a ON DELETE CASCADE. Removing the records from the primary table will delete all sub-records too. Either way... with this you can activate all indexes and constraints again (but only if you also deleted the sub-records with the foreign keys): EXECUTE BLOCK AS DECLARE VARIABLE stmt VARCHAR(1000); BEGIN for select 'ALTER INDEX '||rdb$index_name ||' ACTIVE;' from rdb$indices where (rdb$system_flag is null or rdb$system_flag = 0) order by rdb$foreign_key nulls first into :stmt do EXECUTE STATEMENT :stmt; END ++ Visit http://www.firebirdsql.org and click the Documentation item on the main (top) menu. Try FAQ and other links from the left-side menu there. Also search the knowledgebases at http://www.ibphoenix.com/resources/documents/ ++ Yahoo Groups Links <*> To visit your group on the web, go to: http://groups.yahoo.com/group/firebird-support/ <*> Your email settings: Individual Email | Traditional <*> To change settings online go to: http://groups.yahoo.com/group/firebird-support/join (Yahoo! ID required) <*> To change settings via email: firebird-support-dig...@yahoogroups.com firebird-support-fullfeatu...@yahoogroups.com <*> To unsubscribe from this group, send an email to: firebird-support-unsubscr...@yahoogroups.com <*> Your use of Yahoo Groups is subject to: https://info.yahoo.com/legal/us/yahoo/utos/terms/
RE: [firebird-support] Restore without constraints
I've done that. But the keys still exist and I'm not able to delete them while there are many dependencies. Maybe the only chance is to delete the foreign keys first and then the primary keys. Or is there a more graceful way? Regards Martin
RE: [firebird-support] Restore without constraints
You just need to use the -i switch with gbak when restoring the database. We use this when we have a database that has become corrupted and we are then fixing it with gfix and when it comes to restoring it, it fails due to some issue with either missing or duplicated data Cheers, Neil Pickles - n...@csy.co.uk
