centos man page for spi_getbinval

SPI_GETBINVAL(3)					  PostgreSQL 9.2.7 Documentation					  SPI_GETBINVAL(3)

NAME
       SPI_getbinval - return the binary value of the specified column

SYNOPSIS
       Datum SPI_getbinval(HeapTuple row, TupleDesc rowdesc, int colnumber,
			   bool * isnull)

DESCRIPTION
       SPI_getbinval returns the value of the specified column in the internal form (as type Datum).

       This function does not allocate new space for the datum. In the case of a pass-by-reference data type, the return value will be a pointer
       into the passed row.

ARGUMENTS
       HeapTuple row
	   input row to be examined

       TupleDesc rowdesc
	   input row description

       int colnumber
	   column number (count starts at 1)

       bool * isnull
	   flag for a null value in the column

RETURN VALUE
       The binary value of the column is returned. The variable pointed to by isnull is set to true if the column is null, else to false.

       SPI_result is set to SPI_ERROR_NOATTRIBUTE on error.

PostgreSQL 9.2.7						    2014-02-17							  SPI_GETBINVAL(3)