mysql.connector.errors.InternalError:更新期间发现未读结果

Question

这是我的代码：

postconn = mysql.connector.connect(user='root', password='Infinity8', host='127.0.0.1', database='geodb')
postcursor = postconn.cursor() # creating cursor
....
print ("currently selected ID: ", mydata[0])
sql_update_flag = """ UPDATE REQUESTS SET fl_ready = {0} WHERE request_id={1} """.format(set_flag, current_id)
print (sql_update_flag)
print ("Before commit")
currSrc.execute(sql_update_flag)
print "after commit"
connSrc.commit()

执行后，下一个日志失败：

('currently selected ID: ', 10) UPDATE REQUESTS SET fl_ready = 11 WHERE request_id=10 Before commit Traceback (most recent call last): File "C:\monitoring\GetRequest.py", line 168, in <module> main() File "C:\monitoring\GetRequest.py", line 164, in main SyncRequest(postconn, fireconn) File "C:\monitoring\GetRequest.py", line 92, in SyncRequest currSrc.execute(sql_update_flag) File "C:\Python27\ArcGIS10.2\lib\site-packages\mysql\connector\cursor.py", line 485, in execute self._connection.handle_unread_result() File "C:\Python27\ArcGIS10.2\lib\site-packages\mysql\connector\connection.py", line 1057, in handle_unread_result raise errors.InternalError("Unread result found") mysql.connector.errors.InternalError: Unread result found

看来问题出在这里： currSrc.execute(sql_update_flag)

但我做错了什么？在

Answer 1

在执行任何其他操作之前，必须获取所有行。

您可以这样做：

...
# do SELECT
postcursor.execute("SELECT ...")
rows = postcursor.fetchall()
...
# do UPDATE