Name
SPI_fnumber -- Finds the attribute number for specified attribute
Synopsis
SPI_fnumber(tupdesc, fname)
Inputs
- TupleDesc tupdesc
 Input tuple description
- char * fname
 Field name
Outputs
- int
 Attribute number
| Valid one-based index number of attribute | 
| SPI_ERROR_NOATTRIBUTE if the named attribute is not found | 
Description
SPI_fnumber 
   returns the attribute number for the attribute with name in fname.
Usage
Attribute numbers are 1 based.