[HACKERS] tuple descriptors?

Can anyone tell me how to get a tuple's TupleDesc if all that is known is the tid?  Or is there an easy way to step through a tuple, retrieving the data and data type from each field?   Thanks, Nate Sommer

Re: [HACKERS] tuple descriptors?

is add some code to the heap_delete function that checks the tuple being deleted for oids, compares those oids to the loids in the pg_largeobject relation, and deletes rows accordingly. I thought using TupleDescs would be helpful, but I guess my understanding of them is off. Nate Sommer