-- Created on 2017/4/8 by ADMINISTRATOR?declare?? -- Local variables here? v_sql varchar2(300);? v_deptno teacher.deptno%type:=308;?begin? -- Test statements here? v_sql := 'update teacher set sal=sal+100 where deptno=:1 ';?/* if v_dept is not null then? ? v_sql := v_sql ||' and deptno ='||v_dept;? end if;? if v_name is not null then? ? v_sql := v_sql ||' and tname ='''||v_name||'''';? end if;? if v_gender is not null then? ? v_sql := v_sql || ' and gender='''||v_gender||'''';? end if;*/? execute immediate v_sql;? using v_deptno;end;怎么老是出錯 什么問題啊