Formatting Date Values for MySql

Question

My plan is to insert a date (day_of_test) into a MySql database where the data format is referenced as date.

I had to keep the syntax in the format you see below. But unfortunately my attempts to store the date specifically as a string in the syntax VALUES(%s...) doesn't seem to work.

Does anyone know the easiest way to adjust the syntax to successfully insert day_of_test?

Thank you all

import mysql.connector

mydb = mysql.connector.connect(host="34.xxx.xxx.xxx", user="xxxx", password="xxxxx", database='btc-analysis-db')

c = mydb.cursor()
btc_est = 150.2
sap_close = 100.23
gold_close = 120.2
bonds_close = 210.12
btc_actual = 130.12
day_of_test = "2022-04-20"

c = mydb.cursor()

c.execute(
    "INSERT INTO `ML1`(`day_of_test`, `btc_est`, `sap_close`, `bonds_close`, `gold_close`, `btc_actual`) VALUES (%s, %d, %d, %d, %d, %d );" % (
        day_of_test, btc_est, sap_close, bonds_close, gold_close, btc_actual))

mydb.commit()

c.execute("select * from ML1")

result = c.fetchall()

Answer 1

If you are using python string format, then you are missing quotes around the date value, your syntax should be:

c.execute(
    "INSERT INTO `ML1`(`day_of_test`, `btc_est`, `sap_close`, `bonds_close`,
    `gold_close`, `btc_actual`) VALUES ('%s', %d, %d, %d, %d, %d);" % (
        day_of_test, btc_est, sap_close, bonds_close, gold_close, btc_actual))

But you shouldn't do that. You should use prepared statements (to avoid SQL injection and other problems), and your syntax should look like this:

c.execute(
    "INSERT INTO `ML1`(`day_of_test`, `btc_est`, `sap_close`, `bonds_close`,
    `gold_close`, `btc_actual`) VALUES (%s, %s, %s, %s, %s, %s);", (
        day_of_test, btc_est, sap_close, bonds_close, gold_close, btc_actual))