SPI_getbinval
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.