On Thu, Jan 19, 2017 at 5:53 PM, valeriof <valerio_farrug...@hotmail.com> wrote: > Hi, > > This may come from my lack of experience with Postgres, but I'm trying to > extract the byte portion of a Datum that is of type VarBit - bit/bit(n). I > see that the Datum pointer contains the value content of the bytes (after a > few bytes for the header) but I would need to point to the actual value > (plus also the number of bytes to be picked up).
> > I currently have a similar issue with BYTEAOID columns. I have a Datum > pointer but can't get the actual content. If you have not looked at DatumGetVarBitP() and DatumGetByteaP(), that will get you corresponding structure pointers from a Datum. Then check src/backend/utils/adt/varbit.c and bytea_* functions from src/backend/utils/adt/varlena.c to understand how those structures are used. -- Best Wishes, Ashutosh Bapat EnterpriseDB Corporation The Postgres Database Company -- Sent via pgsql-hackers mailing list (pgsql-hackers@postgresql.org) To make changes to your subscription: http://www.postgresql.org/mailpref/pgsql-hackers
