Name
fieldnum -- field name-number conversion
Synopsis
fieldnum(name)
Parameters
- name
-                 field name (string).
               
Return Type
- integer
-                 field number (integer).
               
Exceptions
- TypeError
-                 Bad parameter type, or too many arguments.
               
- ValueError
-                 Unknown field name.
               
- pg.error
-                 Invalid query result, or invalid connection.
               
Description
        fieldnum() method returns a field number from its name.
        It can be used to build a function that converts result list strings to their correct
        type, using a hardcoded table definition.  The number returned is the
        field rank in the result values list.