SPI_fname
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.