CREATE OR REPLACE TRIGGER tese_cfqnew after UPDATE ON "SRRJ_copy1" FOR each ROWBEGINEXECUTE IMMEDIATE 'merge into "ZB_copy1" ausing (select * from "SRRJ_copy1" ) bon (a."合同编号" = b."合同编号" and a.回款金额 = b.sum(htje_srrj))when not matched thenupdate set a.回款金额 = b.sum(htje_srrj)';end;b表更新后,提示缺失关键字,触发器执行过程出错,主键是合同编号哪位高手能帮着看看吗oracle数据库