Provided by: postgresql-client-8.0_8.0.7-2build1_i386
SPI_returntuple - prepare to return a tuple as a Datum
HeapTupleHeader SPI_returntuple(HeapTuple row, TupleDesc rowdesc)
SPI_returntuple makes a copy of a row in the upper executor context,
returning it in the form of a row type Datum. The returned pointer
need only be converted to Datum via PointerGetDatum before returning.
Note that this should be used for functions that are declared to return
composite types. It is not used for triggers; use SPI_copytuple for
returning a modified row in a trigger.
row to be copied
descriptor for row (pass the same descriptor each time for most
HeapTupleHeader pointing to copied row; NULL only if row or rowdesc is