在MySQL / MariaDB中创建过程并定义变量导致错误＃1064

Question

我正在尝试在mysql / mariadb中创建一个带有声明变量的SP - 但是我没看到，它有什么问题！？！

DROP PROCEDURE IF EXISTS UpdateReceiverDevice;
DELIMITER $$

CREATE PROCEDURE `UpdateReceiverDevice`(IN `deviceIdentifier` VARCHAR(45), IN `deviceName` VARCHAR(45), IN `deviceLocation` VARCHAR(45), IN `informations` TEXT) NOT DETERMINISTIC MODIFIES SQL DATA SQL SECURITY DEFINER
BEGIN
    DECLARE receiverDeviceId AS INT(11) DEFAULT 0
    SET receiverDeviceId = (SELECT ID FROM ReceiverDevice WHERE DeviceIdentifier = deviceIdentifier);
    IF (receiverDeviceId > 0) BEGIN
        UPDATE ReceiverDevice SET Informations = informations WHERE ID = receiverDeviceId;
    ELSE
        INSERT INTO ReceiverDevice (DeviceName, DeviceLocation, DeviceIdentifier, Informations) VALUES(deviceName, deviceLocation, deviceIdentifier, informations);
    END IF
END $$

DELIMITER ;

MySQL正在返回此错误：

Ein oder mehrere Fehler sindaufgetretenwährendIhreAnfrage verarbeitet wurde：Die folgende Abfrage ist fehlgeschlagen：“CREATE PROCEDURE UpdateReceiverDevice （IN deviceIdentifier VARCHAR（45），IN deviceName VARCHAR（45），IN deviceLocation VARCHAR（45），IN informations TEXT）NOT DETERMINISTIC修改SQL数据SQL安全性DEFINER DECLARE receiverDeviceId AS INT（11）SET receiverDeviceId =（SELECT ID FROM ReceiverDevice WHERE DeviceIdentifier = deviceIdentifier）IF receiverDeviceId> 0 UPDATE ReceiverDevice SET Informations = informations WHERE ID = @receiverDeviceId ELSE INSERT INTO ReceiverDevice（DeviceName，DeviceLocation， DeviceIdentifier，Informations）VALUES（deviceName，deviceLocation，deviceIdentifier，informations）END IF“

MySQL meldet：＃1064 - Fehler in der SQL-Syntax。 Bitte die korrekte语法im Handbuch nachschlagen bei'DecLARE receiverDeviceId AS INT（11）SET receiverDeviceId =（Zeile 1中的SELECT ID FROM Re'

这是我的服务器：

• 服务器类型：MariaDB
• 服务器版本：10.3.11-MariaDB-1：10.3.11 + maria~bionic - mariadb.org二进制发行版
• Protokoll版本：10
• Server-Zeichensatz：UTF-8 Unicode（utf8）

Answer 1

评论中的提示“每条陈述都需要终止”非常有帮助。

DROP PROCEDURE IF EXISTS UpdateReceiverDevice;
DELIMITER $$

CREATE PROCEDURE `UpdateReceiverDevice`(IN `deviceIdentifier` VARCHAR(45), IN `deviceName` VARCHAR(45), IN `deviceLocation` VARCHAR(45), IN `informations` TEXT) NOT DETERMINISTIC MODIFIES SQL DATA SQL SECURITY DEFINER 
BEGIN
    DECLARE receiverDeviceId INT(11) DEFAULT 0;
    SELECT ID INTO receiverDeviceId FROM ReceiverDevice WHERE DeviceIdentifier = deviceIdentifier;

    IF receiverDeviceId > 0 THEN
        UPDATE ReceiverDevice SET Informations = informations WHERE ID = receiverDeviceId;
    ELSE
        INSERT INTO ReceiverDevice (DeviceName, DeviceLocation, DeviceIdentifier, Informations) VALUES(deviceName, deviceLocation, deviceIdentifier, informations);
    END IF;
END $$

DELIMITER ;