将代码移动到Debian导致“执行多个语句时使用multi = True”错误语句

问题描述

我一直在运行Python脚本，在装有Ubuntu 20.04 LTS的计算机上对MysqL进行调用。我最近才将这些脚本移到运行Debian 10的服务器上。

两个服务器都安装了MysqL 8.0.21。 Python 3.7.3位于Debian服务器上，Python 3.8.2位于Ubuntu上。在Debian服务器上执行python脚本时，出现以下错误消息：

Use multi=True when executing multiple statements

我没有对代码进行任何更改，所以我不确定为什么在Debian服务器上收到此消息，而在Ubuntu上却没有。

这是脚本中导致错误的部分：

cursor = dbconn.cursor(dictionary=True)

# get next scheduled event to be aired
sql = "CALL GetEvent();"
cursor.execute(sql)

result = cursor.fetchone()
cursor.close()

if result:  
    eventtime = str(result["eventtime"])

    # the max seconds we are going to wait is 60
    init_waitseconds = timediffinseconds(eventtime)
    if init_waitseconds > 61:
        waitseconds = 60
    else:
        waitseconds = init_waitseconds

    # wait for specified time
    print_stdout(f"{bcolors.CGREEN}[EVENT_MONITOR]{bcolors.ENDC} Waiting for next scheduled event at {eventtime}")
    time.sleep(waitseconds)

被调用的存储过程如下：

CREATE DEFINER=`root`@`localhost` PROCEDURE `GetEvent`()
BEGIN
    
    DECLARE v_DayName CHAR(9);    
    SET v_DayName := DAYNAME(CURRENT_DATE);
    
    SELECT e.name,e.eventaction,e.data,e.extra,et.eventday,et.eventtime,et.recurring
        FROM event e
        INNER JOIN eventtime et ON et.eventID = e.ID
        WHERE et.eventdate = CURDATE() AND et.recurring = 'No' AND e.enabled = 1 AND et.eventtime > CURRENT_TIME() OR           
            et.eventday = 'v_DayName' AND et.recurring = 'Yes' AND e.enabled = 1 AND et.eventtime > CURRENT_TIME() OR
            et.eventday = 'Day' AND et.recurring = 'Yes' AND e.enabled = 1 AND et.eventtime > CURRENT_TIME() OR
            CASE WHEN IsWeekday('v_DayName') = True THEN et.eventday = 'Mon-Fri' END AND e.enabled = 1 AND et.eventtime > CURRENT_TIME() OR
            CASE WHEN IsWeekend('v_DayName') = True THEN et.eventday = 'Sat-Sun' END AND e.enabled = 1 AND et.eventtime > CURRENT_TIME()
        ORDER BY et.eventtime
        LIMIT 1;
END

此外，我的python脚本的这一部分会导致相同的错误：

cursor = dbconn.cursor(dictionary=True)

# CheckQueueCount MysqL procedure retrieves how many tracks are currently in queuelist table
sql = "CALL CheckQueueCount"
cursor.execute(sql)

result = cursor.fetchone()
ret = result["QueueCount"]
cursor.close()
return ret

及其调用的存储过程：

CREATE DEFINER=`root`@`localhost` PROCEDURE `CheckQueueCount`()
BEGIN

    SELECT COUNT(ID) AS QueueCount FROM queuelist;
    
END

解决方法

好的，我相信我已经解决了这个问题。我卸载了使用以下命令安装的连接器：

fileType

，而是使用以下命令进行安装：

sudo pip3 install mysql-connector

错误消失了。