If Datum contains only the value (not having type specific info.), then
Suppose i want to print the Datum V value (already defined in postgres)
then printf("%??", V);Because V is assigned by PG_GETARG_POINTER(1); I don't having the information of type Datum. How to print the value of Datum in postgres? On Thu, Mar 24, 2011 at 2:35 AM, Tom Lane <t...@sss.pgh.pa.us> wrote: > Nick Raj <nickrajj...@gmail.com> writes: > > In postgres, typedef uintptr_t Datum > > Datum is getting value from PG_GETARG_POINTER(1); > > But, now problem is how would i know the type of PG_GETARG_POINTER(1) > > (postgres internally pass this argument) to figure out datum type? > > Datum does not carry any type information, only a value. Functions are > typically coded to know their input types a priori. If you want to > write code that is not type-specific then you'd better be passing around > type OIDs as well as values. > > regards, tom lane > > -- > Sent via pgsql-general mailing list (pgsql-general@postgresql.org) > To make changes to your subscription: > http://www.postgresql.org/mailpref/pgsql-general >
