Name
SPI_fname -- Finds the attribute name for the specified attribute
Synopsis
SPI_fname(tupdesc, fname)
Inputs
- TupleDesc tupdesc
 Input tuple description
- char * fnumber
 Attribute number
Outputs
- char *
 Attribute name
| NULL if fnumber is out of range | 
| SPI_result set to
SPI_ERROR_NOATTRIBUTE on error | 
Description
SPI_fname 
   returns the attribute name for the specified attribute.
Usage
Attribute numbers are 1 based.
Algorithm
Returns a newly-allocated copy of the attribute name.