python – MySQL存储过程,Pandas和“执行多个语句时使用multi =

使用Python,Pandas和mySQL并不能获得存储过程来返回结果,更不用说进入数据框了.

我一直收到有关多个查询的错误,但我运行的存储过程是非常简单的参数驱动查询.

无论我使用什么存储过程,它总是相同的结果

实际上,下面的测试程序(sp_test)是以下查询 –

select * from users;

如果我用同一个语句运行

df=pd.read_sql("select * from users",cnx,index_col=None,coerce_float=True)

代替

df=pd.read_sql("call sp_test()",coerce_float=True)

它工作正常,即使sp_test是来自用户的select *

为什么我一直收到multi = true错误消息,如何解决问题并获取存储过程的结果？我不明白一个简单的select语句将如何返回多个结果集.

如果有另一种方法可以做到这一点,很高兴尝试.

以下是我正在使用的简单代码

import pandas as pd
from pandas.io.data import DataReader
from pandas import DataFrame
import mysql.connector

cnx = mysql.connector.connect(user='jeff',password='password',database='testdatabase',host='xx.xxx.xxx.xx')
df=pd.read_sql("call sp_test()",coerce_float=True)

当我到pd.read_sql时,我收到以下错误消息

InterfaceError                            Traceback (most recent call last)
C:UsersUserAppDataLocalContinuumAnaconda3libsite-    packagesmysqlconnectorcursor.py in execute(self,operation,params,multi)
    506             try:
--> 507                 self._handle_result(self._connection.cmd_query(stmt))
    508             except errors.InterfaceError:

C:UsersUserAppDataLocalContinuumAnaconda3libsite-packagesmysqlconnectorconnection.py in cmd_query(self,query)
725             raise errors.InterfaceError(
--> 726                 'Use cmd_query_iter for statements with multiple queries.')
727 

InterfaceError: Use cmd_query_iter for statements with multiple queries.

During handling of the above exception,another exception occurred:

InterfaceError                            Traceback (most recent call last)
C:UsersUserAppDataLocalContinuumAnaconda3libsite-    packagespandasiosql.py in execute(self,*args,**kwargs)
   1563             else:
-> 1564                 cur.execute(*args)
   1565             return cur

C:UsersUserAppDataLocalContinuumAnaconda3libsite-    packagesmysqlconnectorcursor.py in execute(self,multi)
    510                     raise errors.InterfaceError(
--> 511                         "Use multi=True when executing multiple statements")
    512                 raise

InterfaceError: Use multi=True when executing multiple statements