On 8/9/07, Tom Lane <tgl@sss.pgh.pa.us> wrote:
Yeah, we could simply insist on no change to any column that's used by
any of the expressions. That would be cheap to test.
I am trying to figure out the best way to extract this information. Is there any
existing code to get all attributes used in the expressions ? Or do I need
to walk the tree and extract that information ?
Thanks,
Pavan
Pavan Deolasee
EnterpriseDB
http://www.enterprisedb.com