Pymysql DictCursor 返回列表而不是字典
Pymysql DictCursor returning list rather than dictionary
我想弄清楚为什么这个查询返回的是列表列表而不是字典列表。我怀疑它与查询的连接或 'as' 部分有关。对此有任何见解将不胜感激。
代码如下:
try:
#Connect to database
connection = pymysql.connect(
dbConfig.host,
user=dbConfig.user,
passwd=dbConfig.password,
db=dbConfig.db,
ssl=dbConfig.ssl,
connect_timeout=5
)
cursor = connection.cursor(pymysql.cursors.DictCursor)
print(cursor)
except Exception:
print("Error connecting to db")
return
sql = ('select retsub.sms_credits as sms_balance, '
'retsub.subscription_credit as mms_balance, '
'mg.merchants_id, '
'mg.store_name, '
'mg.email_representative from mg_groupdeals_merchants mg '
'left join mg_giftdigital_retailer_retailersubscription retsub on (mg.merchants_id=retsub.merchant_id) '
'left join mg_api_event_mapping event on(mg.merchants_id=event.merchant_id) '
'where retsub.sms_credits is not null '
'and event.merchant_id is not null '
'group by merchants_id;')
cursor.execute('select * from mg_giftdigital_user_sessions')
print(cursor.fetchall())
cursor.execute(sql)
print(cursor.fetchall())
其中returns执行顺序:
首先:与column_name:value匹配查询的字典列表,这正是我所期望的。
第二个:像这样的列表 (('63741', '7598.7924528302', merchant_id, 'store_name'),)
尝试:
connection = pymysql.connect(
dbConfig.host,
user=dbConfig.user,
passwd=dbConfig.password,
db=dbConfig.db,
ssl=dbConfig.ssl,
connect_timeout=5
cursorclass=pymysql.cursors.DictCursor
)
我将游标类型更改为在连接方法内
我想弄清楚为什么这个查询返回的是列表列表而不是字典列表。我怀疑它与查询的连接或 'as' 部分有关。对此有任何见解将不胜感激。
代码如下:
try:
#Connect to database
connection = pymysql.connect(
dbConfig.host,
user=dbConfig.user,
passwd=dbConfig.password,
db=dbConfig.db,
ssl=dbConfig.ssl,
connect_timeout=5
)
cursor = connection.cursor(pymysql.cursors.DictCursor)
print(cursor)
except Exception:
print("Error connecting to db")
return
sql = ('select retsub.sms_credits as sms_balance, '
'retsub.subscription_credit as mms_balance, '
'mg.merchants_id, '
'mg.store_name, '
'mg.email_representative from mg_groupdeals_merchants mg '
'left join mg_giftdigital_retailer_retailersubscription retsub on (mg.merchants_id=retsub.merchant_id) '
'left join mg_api_event_mapping event on(mg.merchants_id=event.merchant_id) '
'where retsub.sms_credits is not null '
'and event.merchant_id is not null '
'group by merchants_id;')
cursor.execute('select * from mg_giftdigital_user_sessions')
print(cursor.fetchall())
cursor.execute(sql)
print(cursor.fetchall())
其中returns执行顺序:
首先:与column_name:value匹配查询的字典列表,这正是我所期望的。
第二个:像这样的列表 (('63741', '7598.7924528302', merchant_id, 'store_name'),)
尝试:
connection = pymysql.connect(
dbConfig.host,
user=dbConfig.user,
passwd=dbConfig.password,
db=dbConfig.db,
ssl=dbConfig.ssl,
connect_timeout=5
cursorclass=pymysql.cursors.DictCursor
)
我将游标类型更改为在连接方法内