(PHP 4 >= 4.0.2, PHP 5 < 5.1.0, PECL ingres >= 1.0.0)
ingres_field_nullable — Test if a field is nullable
$result
, int $index
) : boolTest if a field is nullable.
注意: 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