(PHP 4 >= 4.0.2, PHP 5 <= 5.0.5, PECL ingres >= 1.0.0)
ingres_field_nullable — Test if a field is nullable
$result
   , int $index
   )Test if a field is nullable.
Note: Related Configurations
resultThe query result identifier
index
       index is the field whose nullability will be
       retrieved.
      
       The possible values of index depend upon
       the value
       of ingres.array_index_start.
       If ingres.array_index_start
       is 1 (the default)
       then index must be
       between 1 and the value returned
       by ingres_num_fields(). If ingres.array_index_start
       is 0 then index must
       be between 0
       and ingres_num_fields() -
       1.
      
   ingres_field_nullable() returns TRUE if the
   field can be set to the NULL value and FALSE if it cannot