多做题,通过考试没问题!

Oracle认证考试

睦霖题库>其他计算机考试>Oracle认证考试

Evaluate this SQL statement: SELECT e.EMPLOYEE_ID,e.LAST_NAME,e.DEPARTMENT_ID, d.DEPARTMENT_NAME FROM EMP e, DEPARTMENT d WHERE e.DEPARTMENT_ID = d.DEPARTMENT_ID; In the statement, which capabilities of a SELECT statement are performed?()

  • A、Selection, projection, join
  • B、Difference, projection, join
  • C、Selection, intersection, join
  • D、Intersection, projection, join
  • E、Difference, projection, product
正确答案:A
答案解析:
进入题库查看解析

微信扫一扫手机做题