我正在尝试将列validFrom添加到我的表中alter table mytable add validFrom date default getdate() not nullORA-04044: procedure, function, package, or type is not allowed here
NB_VOLSwhere to_char(TB_DW_VAB_SALES.FLIGHT_DATE,'MM')=to_char(current_date,'MM')-1 and to_char(TB_DW_VAB_SALES.FLIGHT_DATE,'YYYY')=to_char(current_date,'YYYY') and SALES_TYPE='SALES'
and to_c