將兩個datetime參數傳遞給python中的SQL查詢

Question

我一直在努力獲取針對此錯誤的解決方案，同時不斷獲取MySQL 1064。

我的代碼：

query = "SELECT iv_alert.sensorId, iv_alert.sensorAlertUUID, 
iv_packetlog.packetData FROM iv_alert LEFT JOIN iv_packetlog ON 
iv_alert.packetLogId = iv_packetlog.packetLogId WHERE 
iv_packetlog.creationTime > %s AND iv_packetlog.creationTime <= %s"

args=lastquerytime, lasttime
cursor.execute(query,args)

產生以下錯誤：

_mysql_exceptions.ProgrammingError: (1064, 'You have an error in your 
SQL syntax ; check the manual that corresponds to your MySQL server version for 
the right syntax to use near \') AND iv_packetlog.creationTime <= 
("\'2017-08-09 14:53:21\'",)\' at line 1')

同時，僅傳遞一個參數即可正常工作：

query = "SELECT iv_alert.sensorId, iv_alert.sensorAlertUUID, 
iv_packetlog.packetData FROM iv_alert LEFT JOIN iv_packetlog ON 
iv_alert.packetLogId = iv_packetlog.packetLogId WHERE 
iv_packetlog.creationTime > %s"

args=lasttime
cursor.execute(query,args)

我究竟做錯了什么？ 請指教。

Answer 1

嘗試在查詢周圍添加方括號並使args成為元組：

query = ("SELECT iv_alert.sensorId, iv_alert.sensorAlertUUID,"
         "iv_packetlog.packetData FROM iv_alert LEFT JOIN iv_packetlog ON"
         "iv_alert.packetLogId = iv_packetlog.packetLogId WHERE"
         "iv_packetlog.creationTime > %s AND iv_packetlog.creationTime <= %s")

args = (lastquerytime, lasttime)
cursor.execute(query, args)

您可以在文檔中看到相同的示例 。

Answer 2

好的，這是解決方案：

代替：

args=lastquerytime, lasttime

通過此：

args=(lastquerytime + lasttime)

使它成為一個統一的元組。