ralat sisipan pernyataan panjang python sqlite3

Question

Python menggunakan sqlite3 untuk memasukkan pernyataan panjang dan ralat berlaku
Python2.7
Kod sumber di bawah, serta keputusan ujian Tidak ada masalah untuk beroperasi di terminal sebagaimana adanya, tetapi terdapat pepijat semasa berjalan dalam ular sawa

import xlrd
import multiprocessing
from sql import sql_method
mysqlite=sql_method()
def table_compare():
query='''select * FROM compare_sales_order WHERE ( compare_sales_order.order_num, compare_sales_order.product_name, compare_sales_order.col_color) not IN(SELECT order_num, product_name, col_color FROM sales_order) '''
# print query
data=mysqlite.conn.execute(query)
for i in data:
    print i
table_compare()

Menjalankan 1 ujian dalam 0.000s

GAGAL (ralat=1)

Error
Traceback (most recent call last):
  File "C:\Python27\lib\unittest\case.py", line 329, in run
    testMethod()
  File "C:\Python27\lib\unittest\loader.py", line 32, in testFailure
    raise exception
ImportError: Failed to import test module: test
Traceback (most recent call last):
  File "C:\Python27\lib\unittest\loader.py", line 254, in _find_tests
    module = self._get_module_from_name(name)
  File "C:\Python27\lib\unittest\loader.py", line 232, in _get_module_from_name
    __import__(name)
  File "E:\python\excel_python\test.py", line 14, in <module>
    table_compare()
  File "E:\python\excel_python\test.py", line 11, in table_compare
    data=mysqlite.conn.execute(query)
OperationalError: near ",": syntax error

Tiada masalah menaip ke terminal sebagaimana adanya

Answer 1

Ada sesuatu yang tidak kena dengan penulisan SQL anda

sql = """
select
    *
FROM
    compare_sales_order a
WHERE
    not exists
    (
        SELECT 
            1
        FROM sales_order b
        where 
            a.order_num=b.order_num
            and a.product_name=b.product_name
            and a.col_color=b.col_color
    )
"""