Обсуждение: OID - constantly increasing/ what about the gaps?
Hi,
A simple, almost stupid, question :
Does the OIDs allways, without exception no matter what I do, increase?
If I insert a lot of records, delete some of them, inserted more the OID would be :
( about ) 18000 + number of inserted + more records
I mean, the gaps from the deleted records won`t be filled? So I can use this as a measure for new records for example. I could keep track of OIDs when users access a page generated with data from my database, when they return I give them all the rows with OIDs higher than the one I stored at their last visit.
Do I make sense? Damn, I`m tired!
Thanks anyway.
Thomas
Thomas Weholt wrote: > > Hi, > > A simple, almost stupid, question : > > Does the OIDs allways, without exception no matter what I do, > increase? Maybe, but maybe not. Consider them opaque object with no other meaning. > If I insert a lot of records, delete some of them, inserted more the > OID would be : > > ( about ) 18000 + number of inserted + more records > > I mean, the gaps from the deleted records won`t be filled? So I can > use this as a measure for new records for example. I could keep track > of OIDs when users access a page generated with data from my database, > when they return I give them all the rows with OIDs higher than the > one I stored at their last visit. > > Do I make sense? Damn, I`m tired! Maybe you want a sequence or the serial type? -- Martijn van Oosterhout <kleptog@cupid.suninternet.com> http://cupid.suninternet.com/~kleptog/