Re: [HACKERS] UNIQUE not unique with inheritance (workaround?)
Or create a sequence, and make each table in the inheritance hierarchy use the same sequence as it's default value. --- Oliver Elphick wrote: > On Sat, 2003-02-08 at 19:34, Samuel Sieb wrote: > > Is there any workaround for this problem? I'm getting involved in a > > project where inheritance is an incredibly useful feature, but the > > non-unique issue could be a serious stumbling block. Is there any way > > to work around it with a trigger or something? > > Give each table in the hierarchy a foreign key reference to another > table which holds a unique list of the primary keys and a column that > says which table they are in. Use triggers to update this other table > and to prevent duplications in the hierarchy. > > . > -- > Oliver Elphick[EMAIL PROTECTED] > Isle of Wight, UK http://www.lfix.co.uk/oliver > GPG: 1024D/3E1D0C1C: CA12 09E0 E8D5 8870 5839 932A 614D 4C34 3E1D 0C1C > > "But the LORD is in his holy temple; let all the earth > keep silence before him." Habakkuk 2:20 > > > ---(end of broadcast)--- > TIP 4: Don't 'kill -9' the postmaster > -- Bruce Momjian| http://candle.pha.pa.us [EMAIL PROTECTED] | (610) 359-1001 + If your life is a hard drive, | 13 Roberts Road + Christ can be your backup.| Newtown Square, Pennsylvania 19073 ---(end of broadcast)--- TIP 5: Have you checked our extensive FAQ? http://www.postgresql.org/users-lounge/docs/faq.html
Re: [HACKERS] UNIQUE not unique with inheritance (workaround?)
On Sat, 2003-02-08 at 19:34, Samuel Sieb wrote: > Is there any workaround for this problem? I'm getting involved in a > project where inheritance is an incredibly useful feature, but the > non-unique issue could be a serious stumbling block. Is there any way > to work around it with a trigger or something? Give each table in the hierarchy a foreign key reference to another table which holds a unique list of the primary keys and a column that says which table they are in. Use triggers to update this other table and to prevent duplications in the hierarchy. . -- Oliver Elphick[EMAIL PROTECTED] Isle of Wight, UK http://www.lfix.co.uk/oliver GPG: 1024D/3E1D0C1C: CA12 09E0 E8D5 8870 5839 932A 614D 4C34 3E1D 0C1C "But the LORD is in his holy temple; let all the earth keep silence before him." Habakkuk 2:20 ---(end of broadcast)--- TIP 4: Don't 'kill -9' the postmaster
[HACKERS] UNIQUE not unique with inheritance (workaround?)
Is there any workaround for this problem? I'm getting involved in a project where inheritance is an incredibly useful feature, but the non-unique issue could be a serious stumbling block. Is there any way to work around it with a trigger or something? ---(end of broadcast)--- TIP 2: you can get off all lists at once with the unregister command (send "unregister YourEmailAddressHere" to [EMAIL PROTECTED])
