Question

我在Jupyter Notebook中有一个代码，该代码应将数据上传到SQL Server并进行转换。不寻常的是，当我在单独的单元格中运行此代码时，它可以正常工作，但是当我将其包含在一个单元格（或本例中的2个）中时，最后一条语句（带有“ update”）将不会执行。在这种情况下，query_update是唯一未处理的语句。知道为什么吗？

# cell 1    
import pyodbc
import pandas as pd
import subprocess

connection = pyodbc.connect("Driver={SQL Server Native Client 11.0};"
                      "Server=server;"
                      "Database=db;"
                      "Trusted_Connection=yes;", autocommit=True)
cursor = connection.cursor()

# cell 2
query_preload = '''
        truncate table _Distr_for_clients;
        ALTER TABLE _Distr_for_clients DROP COLUMN [Период];
        ALTER TABLE _Distr_for_clients DROP COLUMN [Дистрибьютор];
        ALTER TABLE _Distr_for_clients DROP COLUMN [Medicine_Key];
'''
cursor.execute(query_preload)
print('truncated')

subprocess.Popen(r'bcp [BI_analysis]..[_distr_for_clients] in "T:\work\_DDS\data_original\distr\2019-10 Протек\distr for clients.txt" -SRU-BISVR-01 -T -c -CRAW -t\t -F2')
print('data loaded from txt')

query_transform = '''
        ALTER TABLE _Distr_for_clients ADD [Период] Date;
        ALTER TABLE _Distr_for_clients ADD [Дистрибьютор] VARCHAR(10);
        ALTER TABLE _Distr_for_clients ADD [Medicine_Key] VARCHAR(15);
'''
cursor.execute(query_transform)
print('added columns')

date = "'2019.10.01'"
query_update = '''
        update _Distr_for_clients set [Период] = CONVERT(date,{});
        update _Distr_for_clients set [Дистрибьютор] = 'distr';
        update _Distr_for_clients SET _Distr_for_clients.[Medicine_Key] = _Dim_Distributor_Med_Name_Med_Key.[Medicine_Key] from _Dim_Distributor_Med_Name_Med_Key WHERE _Distr_for_clients.[NM_MED] = _Dim_Distributor_Med_Name_Med_Key.[Medicine_Name];
'''.format(date)
cursor.execute(query_update)
print('updated added columns')

Pyodbc查询不在Jupyter Notebook的一个单元格内运行

0 个答案: