如何正确导出CSV到sql server数据库？

Question

I'm trying to export a CSV file to an sql server database. I checked some questions on StackOverflow but none worked for me. Below is my code:

import csv
import pymssql

connection = pymssql.connect(server='testdb.mammoth.io', user='mammoth', 
    password='jugular$35', database='samplelivedb', port=1433)

cur = connection.cursor()
cur.execute('create table sometable1(col1 varchar(20), col2 varchar(20))')
with open('batch1.csv', 'r') as csvfile:
    reader = csv.reader(csvfile)
    table_name = 'sometable1'
    columns = next(reader) 
    query = 'insert into {0}({1}) values ({2})'
    query = query.format(table_name, ','.join(columns), ','.join('?' * len(columns)))
    print(query) # INSERT INTO sometable1(one1, two1) values(?,?)
    print("query is {0}".format(query))
    for data in reader:
        print(data) # ['b1col1', ' b1col1']
        cur.execute(query, data)
connection.commit()
connection.close()

I'm getting an error that "ValueError: 'params' arg () can be only a tuple or a dictionary."

Now if i modify

"cur.execute(query, data)" to

"cur.execute(query, tuple(data))"

It gives another error :

"pymssql.ProgrammingError: (102, b"Incorrect syntax near '?'.DB-Lib error message 20018, severity 15:\\nGeneral SQL Server error: Check messages from the SQL Server\\n")"

What is the correct way to export csv to an sql server?

Answer 1

I'm pretty sure your data = next(reader) , is not supposed to be there, but only the columns = next(reader) . I have a working example here;

with open ('example.csv', 'r') as f:
    reader = csv.reader(f)
    columns = next(reader)
    query = 'INSERT INTO exampleTable({0}) values({1})'
    query = query.format(','.join(columns),  ','.join('?' * len(columns)))
    cursor = connection.cursor()
    for data in reader:
        cursor.execute(query, data)
    cursor.commit()
connection.close()