Setting this option to YES will force all SQL parameters and resultset columns of "character-type" to be described as their "WIDE" equivalents.
SQL_CHAR is reported as SQL_WCHAR; SQL_VARCHAR is reported as SQL_WVARCHAR, and SQL_LONGVARCHAR is reported as SQL_WLONGVARCHAR.
The associated column length reported (i.e. the number of characters) is unchanged, even though the associated number of bytes is doubled.