无法处理参数：int(1)，它必须是 list、tuple 或 dict 类型

Question

I am currently trying to insert two numbers into a column called konto_type_kode from a table called kontotype but i keep getting this error, here is what my code looks like:

import createdb
import createtables
import mysql.connector

config = mysql.connector.connect(
    host =  "localhost",
    user = "root",
    password = "root",
    database = "dbank_banksystem"
)

cursor = config.cursor()

addtype1 = """ INSERT INTO kontotype (konto_type_kode) VALUES (%i, %i)"""
addtype1val = (1,2)

cursor.executemany(addtype1,addtype1val)

config.commit()

Answer 1

Placeholders in mysql-connector are %s , not %i .

cursor.executemany() requires the parameters to be a 2-dimensional sequence, a sequence of rows to add. So change addtype1val to be a tuple of tuples.

You should only have one placeholder in the VALUES list, since you're only inserting into one column. cursor.executemany() will repeat the VALUES list enough times for each row.

addtype1val = ((1,), (2,))

addtype1 = """ INSERT INTO kontotype (konto_type_kode) VALUES (%s)"""
addtype1val = (1,2)

cursor.executemany(addtype1,addtype1val)