Python-使用replace刪除SQL查詢中的雙引號

Question

我想從要通過Python導出信息的數據庫中刪除雙引號，但是在運行查詢時遇到以下錯誤：

我在過程中使用了應該是正確的替換，但是我沒有成功...

# Libraries
import csv 
import logging
import os
import gcloud
from gcloud import storage
from google.cloud import bigquery
from oauth2client.client import GoogleCredentials
import json
import pyodbc
from datetime import datetime

try:
    script_path = os.path.dirname(os.path.abspath(__file__)) + "/"
except:
    script_path = "key.json"

#Bigquery Credentials and settings
os.environ["GOOGLE_APPLICATION_CREDENTIALS"] = script_path 

database='xxx'
uid = 'xxx'
pwd = 'xxx'
server = '0.0.0.0'
driver = "DRIVER={SQL Server};server=" + server + ";database=" + database + ";uid=" + uid + ";pwd=" + pwd
print(driver) 
# connecting to the DB 
db = pyodbc.connect(driver)
cursor = db.cursor()
tabela = 'test'
SQLview = "select replace(replace(col0,';','|'),'"','') as col0, \
replace(replace(col1,';','|'),'"','') as col1, \
replace(replace(col2,';','|'),'"','') as col2, \
replace(replace(col3,';','|'),'"','') as col3, \
replace(replace(col4,';','|'),'"','') as col4
from test"
data = datetime.today().strftime('%Y%m%d%H%M%S')
filename = tabela + '_' + data + '.csv'
folder = "C:\\Users\\me\\Documents\\"


# Creating CVS file
cursor.execute(SQLview)
with open(folder + filename, 'w', newline= '', encoding = 'utf-8') as f:
    writer = csv.writer(f, delimiter=';')
    writer.writerow([ i[0] for i in cursor.description ])
    writer.writerows(cursor.fetchall())

文件“”，來自operacoes_b2w的第64行” ^語法錯誤：掃描字符串文字時停產

Answer 1

您需要將SQL查詢用三引號而不是單引號引起來，因為它會將其中的"誤認為是字符串的結尾。

SQLview = "select replace(replace(col0,';','|'),'"','') as col0, \
replace(replace(col1,';','|'),'"','') as col1, \
replace(replace(col2,';','|'),'"','') as col2, \
replace(replace(col3,';','|'),'"','') as col3, \
replace(replace(col4,';','|'),'"','') as col4
from test"

做這個：

SQLview = """select replace(replace(col0,';','|'),'"','') as col0, \
replace(replace(col1,';','|'),'"','') as col1, \
replace(replace(col2,';','|'),'"','') as col2, \
replace(replace(col3,';','|'),'"','') as col3, \
replace(replace(col4,';','|'),'"','') as col4
from test"""