Проблема с IBUpdateSQL

BOND_GOVD (

    DATE_IN   DATE NOT NULL,

    TIME_IN   TIME NOT NULL,

    FIO_DISP  VARCHAR(50) CHARACTER SET NONE,

    FIO_GOVD  VARCHAR(50) CHARACTER SET NONE,

    COMMENTS  VARCHAR(11) CHARACTER SET NONE DEFAULT 'Íå ðàáîòàåò' NOT NULL

);

update BOND_GOVD

set

  DATE_IN = :DATE_IN,

  TIME_IN = :TIME_IN,

  FIO_DISP = :FIO_DISP,

  FIO_GOVD = :FIO_GOVD,

  COMMENTS = :COMMENTS

where

  DATE_IN = :OLD_DATE_IN and

  TIME_IN = :OLD_TIME_IN