rwangpeng
rwangpeng
符举例 SELECT employee_id, job_id FROM employees INTERSECT SELECT employee_id, job_id FROM job_history。 1510 Copyright 169。 Oracle Corporation, 2020. All rights reserved. MINUS 操作符 A B MINUS
符举例 SELECT employee_id, job_id FROM employees INTERSECT SELECT employee_id, job_id FROM job_history。 1510 Copyright 169。 Oracle Corporation, 2020. All rights reserved. MINUS 操作符 A B MINUS