spi_fname(3) centos man page | unix.com

SPI_FNAME(3)						  PostgreSQL 9.2.7 Documentation					      SPI_FNAME(3)

NAME
       SPI_fname - determine the column name for the specified column number

SYNOPSIS
       char * SPI_fname(TupleDesc rowdesc, int colnumber)

DESCRIPTION
       SPI_fname returns a copy of the column name of the specified column. (You can use pfree to release the copy of the name when you don't need
       it anymore.)

ARGUMENTS
       TupleDesc rowdesc
	   input row description

       int colnumber
	   column number (count starts at 1)

RETURN VALUE
       The column name; NULL if colnumber is out of range.  SPI_result set to SPI_ERROR_NOATTRIBUTE on error.

PostgreSQL 9.2.7						    2014-02-17							      SPI_FNAME(3)