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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 EMPLOYEES e, DEPARTMENTS 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:
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