创建一个与其他表一样结构的表

create table charge_dtl_tmp as select * from charge_dtl where activity='DG';
update charge_dtl_tmp set activity='DC' where activity='DG';
insert into charge_dtl(select * from charge_dtl_tmp where activity='DC');
drop table charge_dtl_tmp;
create table charge_instr_tmp as select * from charge_instr where activity='DG';
update charge_instr_tmp set activity='DC' where activity='DG';
insert into charge_instr(select * from charge_instr_tmp where activity='DC');
drop table charge_instr_tmp;
commit;