mysql phpmyadmin#1064中的存储过程

我试图在phpmyadmin中用Mysql编写一个存储过程，但遇到了一个错误：

DELIMITER //
DROP PROCEDURE IF EXISTS USP_SwitchTable //
CREATE PROCEDURE USP_SwitchTable(IN idTable1 INT, IN idTable2 INT)
AS BEGIN
    DECLARE idFirstBill INT;
    DECLARE idSecondBill INT;
    SELECT idFirstBill = id FROM bill WHERE id_table = idTable1 AND status = 0;
    SELECT idSecondBill = id FROM bill WHERE id_table = idTable2 AND status = 0;

    IF (idFirstBill IS NULL)
    BEGIN
    INSERT bill (id_table, bill_maker, status) VALLUES (idTable1, 1, 0);
    SELECT idFirstBill = MAX(id) FROM bill WHERE id_table = idTable1 AND status = 0;
    END


    IF (idSecondBill  IS NULL)
    BEGIN
    INSERT bill (id_table, bill_maker, status) VALLUES (idTable2, 1, 0);
    SELECT idSecondBill = MAX(id) FROM bill WHERE id_table = idTable2 AND status = 0;
    END

    SELECT id INTO IDBillInfoTable FROM bill_info WHERE id_bill = idSecondBill;

    UPDATE bill_info SET id_bill = idSecondBill WHERE id_bill = idFirstBill;

    UPDATE bill_info SET id_bill = idFirstBill WHERE id IN (SELECT * FROM IDBillInfoTable);

    DROP TABLE IDBillInfoTable;

END//
DELIMITER ;

下面是它所说的：

错误#1064-您的SQL语法有错误；检查与您的MariaDB服务器版本相对应的手册，了解在“开始插入票据（id_表，票据制作人，状态）值（idTable1，1，0）；”附近使用的正确语法在9号线

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我能做些什么来解决这个问题？我对此有点陌生，谢谢大家

MySQL IF子句使用

然后

结束IF

而不是

开始

和

结束

您可能还希望为

IDBillInfoTable

使用临时表，以便它可以并发使用

IF (idSecondBill  IS NULL) THEN
  INSERT INTO bill (id_table, bill_maker, status) 
  VALUES (idTable2, 1, 0);

  SELECT MAX(id) into idSecondBill
  FROM bill 
  WHERE id_table = idTable2 AND status = 0;
END IF;

和临时表创建：

CREATE TEMPORARY TABLE IDBillInfoTable AS 
SELECT id
FROM bill_info 
WHERE id_bill = idSecondBill;

然后放下临时桌

DROP TEMPORARY TABLE IDBillInfoTable;