--差异分摊增加项目号
IF NOT EXISTS (SELECT 1 FROM KSQL_USERCOLUMNS WHERE KSQL_COL_TABNAME = 'T_IM_MDC_MFTBACKDIFSHARE' AND KSQL_COL_NAME ='FBDPROJECT') 
 ALTER TABLE T_IM_MDC_MFTBACKDIFSHARE ADD (FBDPROJECT BIGINT DEFAULT 0 NOT NULL );