Python Postgres-psycopg2.ProgrammingError:没有要获取的结果
一个小时以来我一直在做这件事。我是博士后的新手。在postgres中,CRUD操作过于繁琐。 我无法获取最新插入行的id 我在Python Postgres-psycopg2.ProgrammingError:没有要获取的结果,python,postgresql,psycopg2,Python,Postgresql,Psycopg2,一个小时以来我一直在做这件事。我是博士后的新手。在postgres中,CRUD操作过于繁琐。 我无法获取最新插入行的id 我在cur.execute()之后使用了cursor.fetchone()[0] 我的错误是:- Traceback (most recent call last): File "main.py", line 79, in <module> shipping_bill_id = cur.fetchone()[0] psycopg2.Program
cur.execute()之后使用了cursor.fetchone()[0]
我的错误是:-
Traceback (most recent call last):
File "main.py", line 79, in <module>
shipping_bill_id = cur.fetchone()[0]
psycopg2.ProgrammingError: no results to fetch
我的密码:-
data = { "products" :
{
"name": "",
"hs_code": "",
"unit_price": "",
"unit_currency": "",
"quantity": "",
"total_price": ""
}
}
data["FOB_currency"] = obj["Currency "]
data["origin_port_name"] = "MUNDRA"
data["destination_port_name"] = obj["Port of Discharge"]
data["origin_port_code"] = "INMUN1"
data["destination_port_code"] = get_port_code(obj["Port of Discharge"])
iec = str(int(obj["IEC"]))
if len(iec) == 9 :
data["IEC"] = "0"+iec
else:
data["IEC"] = iec
data["products"]["quantity"] = obj["Quantity "]
data["products"]["unit_price"] = obj["Item rate "]
data["products"]["name"] = obj["Item Desc "]
data["products"]["hs_code"] = int(obj["RITC Code "])
data["products"]["unit_currency"] = obj["Currency "]
data["FOB_value"] = obj["FOB "]
data["shipping_bill_date"] = obj["SB.Date"]
data["shipping_bill_no"] = int(obj["SB.No."])
data["invoice_number"] = obj["Invoice No "]
company_id = None
for e in company_rows:
if e[1] == data["IEC"]:
company_id = e[0]
if company_id != None :
cur.execute("INSERT INTO shipping_bills (company_id,fob_value,fob_currency,origin_port_name,destination_port_name,origin_port_code,destination_port_code,invoice_number,shipping_bill_number,created_at,updated_at) \
VALUES (%s,%s,%s,%s,%s,%s,%s,%s,%s,%s,%s)",(company_id,data["FOB_value"],str(data["FOB_currency"]),data["origin_port_name"],data["destination_port_name"],data["origin_port_code"],data["destination_port_code"],data["invoice_number"],data["shipping_bill_no"],datetime.datetime.now(),datetime.datetime.now())) ;
shipping_bill_id = cur.fetchone()[0]
total_price = data["products"]["unit_price"]*data["products"]["quantity"]
cur.execute("INSERT INTO shipping_bills_products (shipping_bill_id,total_price,name,unit_price,unit_currency,hss_code,quantity) \
VALUES (%s,%s,%s,%s,%s,%s,%s,%s,%s)",(shipping_bill_id,total_price,str(data["products"]["name"]),data["products"]["unit_price"],str(data["products"]["unit_currency"]),data["products"]["hs_code"],data["products"]["quantity"],datetime.datetime.now(),datetime.datetime.now())) ;
conn.commit()
print(company_id)
您缺少返回的:
cur.execute('''
INSERT INTO shipping_bills (
company_id,
fob_value,
fob_currency,
origin_port_name,
destination_port_name,
origin_port_code,
destination_port_code,
invoice_number,
shipping_bill_number,
created_at,
updated_at
) values (%s,%s,%s,%s,%s,%s,%s,%s,%s,current_timestamp,current_timestamp)
returning shipping_bill_number
''', (
company_id,data["FOB_value"],
str(data["FOB_currency"]),
data["origin_port_name"],
data["destination_port_name"],
data["origin_port_code"],
data["destination_port_code"],
data["invoice_number"],
data["shipping_bill_no"]
)
) ;
对于遇到此问题的其他人:
对于“select”语句,我在fetchone()上遇到了类似的异常:
cursori = conn.cursor()
cursori.execute("select * from table where col = 'string'")
while 1:
data = cursori.fetchone()
if not data:
break
# other code...
原来我犯了一个简单的错误,在“其他代码”中用“cursori”执行另一个查询。嘿..谢谢你的回答!但我应该退回船运账单和身份证……对吗?!!。。。因为这就是我想把它插入装运单产品的原因column@VivekIyer:归还你需要的东西。我只是在shipping\u bills
表定义中没有看到该列。它为我工作,特别适用于多线程应用程序
cursori = conn.cursor()
cursori.execute("select * from table where col = 'string'")
while 1:
data = cursori.fetchone()
if not data:
break
# other code...