Mysql Call-Funktion innerhalb einer anderen Funktion

Question

Ich habe zwei Funktionen. set_credit_values ​​und do_credit. Ich werde den zweiten von innen heraus anrufen. Dann wird der Fehler 1 errors were found during analysis.Unexpected character. (near ":" at position 983), #1415 - Not allowed to return a result set from a function angezeigt. Mein Code ist wie folgt

  DROP FUNCTION IF EXISTS do_credit; 

      DELIMITER $$; 
      CREATE FUNCTION do_credit (ltp_id int, cr_count tinyint, cr_on tinyint, next_cr date, cr_period tinyint) 
      RETURNS INT DETERMINISTIC 
      BEGIN 

       INSERT IGNORE INTO aaa_test(aaa_ltp_id, aaa_cr_count, aaa_cr_on, aaa_next_cr, aaa_cr_period) VALUES 
       (ltp_id, cr_count, cr_on, next_cr, cr_period); 
       RETURN LAST_INSERT_ID(); 

      END $$; 
      DELIMITER ; 

      DROP FUNCTION IF EXISTS set_credit_values; 

      DELIMITER $$; 
      CREATE FUNCTION set_credit_values (emp_id bigint, lpc_id int, elp_date date) RETURNS boolean DETERMINISTIC 
      BEGIN 

       DECLARE ltp_id INT(11) DEFAULT 0; 
       DECLARE cr_count tinyint(4) DEFAULT 0; 
       DECLARE cr_on tinyint(1) DEFAULT 0; 
       DECLARE next_cr DATE DEFAULT NULL; 
       DECLARE cr_period tinyint(4) DEFAULT 0; 

       DECLARE v_finished INT(11) DEFAULT 0; 

       DEClARE cur_set_credit CURSOR FOR      
       SELECT lpb_fk_leave_type, lpb_cr_count, lpb_cr_on, lpb_next_cr, lpb_cr_period FROM erp_leave_policy_body 
       WHERE lpb_fk_leave_policy = lpc_id; 

       DECLARE CONTINUE HANDLER FOR NOT FOUND SET v_finished = 1; 

       OPEN cur_set_credit; 

        get_cr: LOOP 

         FETCH cur_set_credit INTO ltp_id, cr_count, cr_on, next_cr, cr_period; 

         IF v_finished = 1 THEN 
         LEAVE get_cr; 
         END IF; 

         SELECT do_credit(ltp_id, cr_count, cr_on, next_cr, cr_period) FROM DUAL; 


        END LOOP get_cr; 

       CLOSE cur_set_credit; 

       RETURN 1; 
      END $$; 
      DELIMITER ; 

Es arbeitet mich erfolgreich, wenn ich die INSERT-Abfrage innerhalb set_credit_values ​​Funktion ohne den Aufruf der do_credit Funktion schreiben, wie

  DROP FUNCTION IF EXISTS set_credit_values; 

      DELIMITER $$; 
      CREATE FUNCTION set_credit_values (emp_id bigint, lpc_id int, elp_date date) RETURNS boolean DETERMINISTIC 
      BEGIN 

       DECLARE ltp_id INT(11) DEFAULT 0; 
       DECLARE cr_count tinyint(4) DEFAULT 0; 
       DECLARE cr_on tinyint(1) DEFAULT 0; 
       DECLARE next_cr DATE DEFAULT NULL; 
       DECLARE cr_period tinyint(4) DEFAULT 0; 

       DECLARE v_finished INT(11) DEFAULT 0; 

       DEClARE cur_set_credit CURSOR FOR      
       SELECT lpb_fk_leave_type, lpb_cr_count, lpb_cr_on, lpb_next_cr, lpb_cr_period FROM erp_leave_policy_body 
       WHERE lpb_fk_leave_policy = lpc_id; 

       DECLARE CONTINUE HANDLER FOR NOT FOUND SET v_finished = 1; 

       OPEN cur_set_credit; 

        get_cr: LOOP 

         FETCH cur_set_credit INTO ltp_id, cr_count, cr_on, next_cr, cr_period; 

         IF v_finished = 1 THEN 
         LEAVE get_cr; 
         END IF; 

         INSERT IGNORE INTO aaa_test(aaa_ltp_id, aaa_cr_count, aaa_cr_on, aaa_next_cr, aaa_cr_period) VALUES 
       (ltp_id, cr_count, cr_on, next_cr, cr_period); 


        END LOOP get_cr; 

       CLOSE cur_set_credit; 

       RETURN 1; 
      END $$; 
      DELIMITER ; 

folgt Aber ich brauche es in do_credit Funktion zu tun weil ich damit noch einige andere Fragen beantworten muss. Also bitte jemand Hilfe

Answer 1

Wie erwähnt in der unteren Code, freundlicherweise DECLARE one VARIABLE und nach dem Aufruf der Funktion erhalten Wert in dieser Variablen mit INTO Schlüsselwort zurückgegeben. Hoffe, das wird dir helfen.

DROP FUNCTION IF EXISTS do_credit; 

       DELIMITER $$; 
       CREATE FUNCTION do_credit (ltp_id int, cr_count tinyint, cr_on tinyint, next_cr date, cr_period tinyint) 
       RETURNS INT DETERMINISTIC 
       BEGIN 

        INSERT IGNORE INTO aaa_test(aaa_ltp_id, aaa_cr_count, aaa_cr_on, aaa_next_cr, aaa_cr_period) VALUES 
        (ltp_id, cr_count, cr_on, next_cr, cr_period); 
        RETURN LAST_INSERT_ID(); 

       END $$; 
       DELIMITER ; 

       DROP FUNCTION IF EXISTS set_credit_values; 

       DELIMITER $$; 
       CREATE FUNCTION set_credit_values (emp_id bigint, lpc_id int, elp_date date) RETURNS boolean DETERMINISTIC 
       BEGIN 

        DECLARE ltp_id INT(11) DEFAULT 0; 
        DECLARE var_id INT(11) DEFAULT 0; <--Declare this variable 
        DECLARE cr_count tinyint(4) DEFAULT 0; 
        DECLARE cr_on tinyint(1) DEFAULT 0; 
        DECLARE next_cr DATE DEFAULT NULL; 
        DECLARE cr_period tinyint(4) DEFAULT 0; 

        DECLARE v_finished INT(11) DEFAULT 0; 

        DEClARE cur_set_credit CURSOR FOR      
        SELECT lpb_fk_leave_type, lpb_cr_count, lpb_cr_on, lpb_next_cr, lpb_cr_period FROM erp_leave_policy_body 
        WHERE lpb_fk_leave_policy = lpc_id; 

        DECLARE CONTINUE HANDLER FOR NOT FOUND SET v_finished = 1; 

        OPEN cur_set_credit; 

         get_cr: LOOP 

          FETCH cur_set_credit INTO ltp_id, cr_count, cr_on, next_cr, cr_period; 

          IF v_finished = 1 THEN 
          LEAVE get_cr; 
          END IF; 

          SELECT do_credit(ltp_id, cr_count, cr_on, next_cr, cr_period) into var_id FROM DUAL; <--get return value in declared variable> 


         END LOOP get_cr; 

        CLOSE cur_set_credit; 

        RETURN 1; 
       END $$; 
       DELIMITER ;