Question

from sqlalchemy import create_engine
engine = create_engine('mssql+pymssql://myusername:mypassword@127.0.0.1:1433/AQOA_Core')
connection = engine.connect()
result = connection.execute("""SELECT DISTINCT Distributor FROM Product""")
for row in result:
    print row[0]
connection.close()

上面的代码返回一个结果集：

FRANCETV
GAUMONT
M6SND
PATHE
STUDIOCANAL
TF1
WARNER

如果我想在不更改查询的情况下只打印一个值，该怎么办？

尝试print row[0][1]，print row[0:1]尝试仅打印第一个值FRANCETV

基本上我希望能够单独打印结果集中的每个值，而无需更改查询。

Answer 1

您可以尝试通过以下方式访问数据：

connection = engine.connect()
result = connection.execute("""SELECT DISTINCT Distributor FROM Product""")
result_list = result.fetchall()  
result_list[0][0]
connection.close()

Answer 2

如果你看一下pymssql文档，你会发现游标对象有一个fetchone()方法。

with engine.connect() as connection:
    cursor = connection.cursor()
    cursor.execute("""SELECT DISTINCT Distributor FROM Product""")
    first_row = cursor.fetchone()
    print first_row

Python：仅打印SQL查询结果集的一个值

2 个答案: