UPDATE TBPMO_CONTROL SET SHOW_COLUMN = 1 WHERE CONTROL_TYPE_ID = 2 AND SHOW_COLUMN is null
UPDATE TBPMO_CONTROL SET SHOW_COLUMN = 1 WHERE SHOW_COLUMN is null

ALTER TABLE TBPMO_CONTROL
ALTER COLUMN SHOW_COLUMN BIT NOT NULL 

ALTER TABLE TBPMO_CONTROL
ADD DEFAULT 1 FOR SHOW_COLUMN