oracle插入时，若表中不存在该信息则插入，否则更新主键外的其他信息
--测试数据create table table1(id varchar2(100),name varchar2(1000),address varchar2(1000));insert into table1(id,name,address)values('01001','影子','河北') ;commit;--插入merge into table1 t1using (select '01002' id,'影子' name,'河北' address from dual) t2on (t1.id = t2.id)when matched then update set t1.name = t2.name, t1.address = t2.addresswhen not matched then insert values (t2.id, t2.name,t2.address);commit;--查询结果select * from table101001 影子 河北01002 影子2 辽宁--更新merge into table1 t1using (select '01001' id,'不是影子' name,'山西' address from dual) t2on (t1.id = t2.id)when matched then update set t1.name = t2.name, t1.address = t2.addresswhen not matched then insert values (t2.id, t2.name,t2.address);commit;--查询结果select * from table101001 不是影子 山西01002 影子2 辽宁--删除测试数据drop table table1;begin insert into Table (ID,Value,..) values(1001,'222',...); commit; exception when dup_val_on_idx then update Table set value = '222' where id = 1001; commit; when others then Rollback; end;