多选题 下面哪些语句在执行时不返回错误信息,而显示检索结果?______
  • A.SELECT empno,ename FROM scott.emp WHERE depmo=(SELECT dcptno FROM scott.dept WHERE dneme NOT IN('SALES'));
  • B.SELECT empno,ename FROM scott.emp WHERE depmo=(SELECT depmo FROM scott.dept WHERE dneme IN('SALES'));
  • C.SELECT empno,e.depton,dname FROM scott.emp e,scott.dept d;
  • D.SELECT empno,depton,dname FROM scott.emp,scott.dept;
【正确答案】 B、D
【答案解析】