Not all parameters were used in the SQL statement (Python, MySQL)

Question

I get an error on the following Python code:

import mysql.connector
cnx = mysql.connector.connect(user=\'root\', password=\'\',
                          hos         


        

Answer 1

The parameter marker is %s not %d.

add_user = """INSERT INTO DB.tbluser 
              (username, department, startyear, currentpos, link) 
              VALUES (%s, %s, %s, %s, %s)"""

Note that the parameter markers used by mysql.connector may look the same as the %s used in Python string formatting but the relationship is only coincidental. Some database adapters like oursql and sqlite3 use ? as the parameter marker instead of %s.

Answer 2

use single quotations

sql = 'insert into Student (id, fname, lname, school) values(%s, %s, %s , %s)'
values = (4, "Gaddafi", "Adamu", "Informatic")

a.execute(sql, values)

mydb.commit()
print(a.rowcount, "record inserted.")

Answer 3

add_user = '''("INSERT INTO DB.tbluser " "(username, department, startyear, currentpos, link) " "VALUES (%s, %s, %s, %s, %s)")'''

=> you are using multi line statement so use triple single quotation marks here and use %s to represent passing value as string then that will works because %d is not supported by mysql to pass value