SPI_returntuple (3)

Leading comments

    Title: SPI_returntuple
   Author: The PostgreSQL Global Development Group
Generator: DocBook XSL Stylesheets v1.79.1 <http://docbook.sf.net/>
     Date: 2017
   Manual: PostgreSQL 9.6.5 Documentation
   Source: PostgreSQL 9.6.5
 Language: English

NAME

SYNOPSIS

HeapTupleHeader SPI_returntuple(HeapTuple row, TupleDesc rowdesc)

DESCRIPTION

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.

ARGUMENTS

HeapTuple row

row to be copied

TupleDesc rowdesc

descriptor for row (pass the same descriptor each time for most effective caching)

RETURN VALUE

HeapTupleHeader pointing to copied row; NULL only if row or rowdesc is NULL