• 2022-07-23
    有如下存储过程: DELIMITER // CREATE PROCEDURE CountProc1(IN s_gender VARCHAR(50),OUT n
    A: A.CALL CountProc1(in "女",out @num);
    B: B.SELECT CountProc1("女",@num);
    C: C.DECLARE CountProc1("女",out @num);
    D: D.CALL CountProc1("女",@num);