IF NOT EXISTS( SELECT * FROM syscolumns WHERE id=object_id('T_RECEIVE_H') and Name='F_RecieveLockingState') BEGIN ALTER TABLE T_RECEIVE_H DROP COLUMN F_Ministerid ALTER TABLE T_RECEIVE_H ADD F_RecieveLockingState int ALTER TABLE T_RECEIVE_H ADD F_RecieveLockingTime datetime ALTER TABLE T_RECEIVE_H ADD F_Ministerid varchar(10) END GO IF NOT EXISTS( SELECT * FROM syscolumns WHERE id=object_id('T_CONSUMEWORKER_H') and Name='F_SelClock') BEGIN ALTER TABLE T_CONSUMEWORKER_H ADD F_SelClock int END