Question

我有一个程序我需要设置d_x FOR select语句1，d_y FOR select语句2，d_z用于select语句3.我怎样才能修改下面的程序来实现...

 CREATE PROCEDURE A () 
    BEGIN 
        DECLARE d_a INT;
        DECLARE d_b INT;
        DECLARE d_c INT;
        ---
        --
        -
        DECLARE CONTINUE HANDLER FOR NOT FOUND 
        BEGIN
            SET d_x = 1;
            SET d_y = 2;
            SET d_z = 3;
        END;

        SELECT aa INTO d_x FROM TEST1;
        SELECT bb INTO d_y FROM TEST2;
        SELECT cc INTO d_z FROM TEST3;
    END

Answer 1

我为我的问题找到了一个解决方案。可能的答案。但如果有更多的替代方式请定义。

CREATE PROCEDURE A () 
    BEGIN 
        DECLARE d_a INT;
        DECLARE d_b INT;
        DECLARE d_c INT;
        ---
        --
        -

      BEGIN
        DECLARE CONTINUE HANDLER FOR NOT FOUND 
        BEGIN
            SET d_x = 1;
        END;
        SELECT aa INTO d_x FROM TEST1;
      END;
      BEGIN
        DECLARE CONTINUE HANDLER FOR NOT FOUND 
        BEGIN
            SET d_y = 2;
        END;
        SELECT bb INTO d_y FROM TEST2;
      END;
            BEGIN
        DECLARE CONTINUE HANDLER FOR NOT FOUND 
        BEGIN
            SET d_y = 2;
        END;
        SELECT cc INTO d_z FROM TEST3;
      END; 
    END

如何为STORE PROCEDURE中相同的NOT FOUND SQL EXCEPTION设置不同语句的变量值

1 个答案: