Question

我可以执行不带参数的存储过程：

import pandas as pd
import sqlalchemy
import pyodbc
import datetime as dt  

engine = sqlalchemy.create_engine('mssql+pymssql://MyServer/MyDB')
df = pd.read_sql_query('EXEC dbo.TestProcedure' , engine)  # stored procedure without parameters
print(df)

但无法执行带有参数的存储过程：

import pandas as pd
import sqlalchemy
import pyodbc
import datetime as dt  

myparams = ['2017-02-01','2017-02-28', None]  # None substitutes NULL in sql

engine = sqlalchemy.create_engine('mssql+pymssql://MyServer/MyDB')
df = pd.read_sql_query('EXEC PythonTest_Align_RSrptAccountCurrentMunich @EffectiveDateFrom=?,@EffectiveDateTo=?,@ProducerLocationID=?', engine, params=myparams)
print(df)

错误消息：

  File "src\pymssql.pyx", line 465, in pymssql.Cursor.execute
sqlalchemy.exc.ProgrammingError: (pymssql.ProgrammingError) (102, b"Incorrect syntax near '?'.DB-Lib error message 20018, severity 15:\nGeneral SQL Server error: Check messages from the SQL Server\n")
[SQL: EXEC PythonTest_Align_RSrptAccountCurrentMunich @EffectiveDateFrom=?,@EffectiveDateTo=?,@ProducerLocationID=?]
[parameters: ('2017-02-01', '2017-02-28', None)]
(Background on this error at: http://sqlalche.me/e/f405)

如何使用sqlalchemy传递参数？

如何在熊猫中使用sqlalchemy执行具有多个日期参数的sql存储过程

0 个答案: