Re: [HACKERS] deleting dependencies
Christopher Kings-Lynne [EMAIL PROTECTED] writes: I've been looking at the dependency API and I notice that there is a function to delete ALL dependencies on an object and a function to add a dependency, but there doesn't seem to be any way of deleting a dependency between two _particular_ objects. In the ALTER cases that have been implemented so far, it seemed easiest to wipe the full set of dependencies and then regenerate them from the altered object. I think you will find the same is true of altering column type. To take just one example, the column default expression (if any) almost certainly has to be replaced too, and it may contain dependencies. regards, tom lane ---(end of broadcast)--- TIP 1: subscribe and unsubscribe commands go to [EMAIL PROTECTED]
Re: [HACKERS] deleting dependencies
Christopher Kings-Lynne [EMAIL PROTECTED] writes: I've been looking at the dependency API and I notice that there is a function to delete ALL dependencies on an object and a function to add a dependency, but there doesn't seem to be any way of deleting a dependency between two _particular_ objects. In the ALTER cases that have been implemented so far, it seemed easiest to wipe the full set of dependencies and then regenerate them from the altered object. I think you will find the same is true of altering column type. To take just one example, the column default expression (if any) almost certainly has to be replaced too, and it may contain dependencies. Phase 1 (which I'm currently doing) will do binary-compatible casts only. After that, I have to start using code from cluster.c to rewrite the table methinks...and everything gets a *lot* harder... Chris ---(end of broadcast)--- TIP 2: you can get off all lists at once with the unregister command (send unregister YourEmailAddressHere to [EMAIL PROTECTED])
