Make a copy of a row in the upper executor context
HeapTuple SPI_copytuple(HeapTuple row)
SPI_copytuple makes a copy of a row in the upper executor context. This is normally used to return a modified row from a trigger. In a function declared to return a composite type, use SPI_returntuple instead.
HeapTuple row
row to be copied
the copied row; NULL only if tuple is NULL