Issue implementing Sql_tracker_store - rasa-nlu

Question

I want to use sql tracker store to store the conversation history in db but it seems it is not working for me.
I am having MySQL database which i want to connect for that i am using below code in my endpoint.yml
tracker_store:
type: SQL
dialect: "sqlite" # the dialect used to interact with the db
url: "localhost" # (optional) host of the sql db
db: "chatbot" # path to your db
username: "root" # username used for authentication
password: "test" # password used for authentication
when i am running rasa shell -m models --endpoints endpoints.yml
i am getting below error.
" sqlite:////absolute/path/to/file.db" % (url,)
sqlalchemy.exc.ArgumentError: Invalid SQLite URL: sqlite://root:test#localhost/c
hatbot
Valid SQLite URL forms are:
sqlite:///:memory: (or, sqlite://)
sqlite:///relative/path/to/file.db
sqlite:////absolute/path/to/file.db
When i tried to connect the same db using python code it worked for me. Below is my python code.
import mysql.connector
mydb = mysql.connector.connect(host="localhost",port="3306",user="root",database="chatbot",password="test")
mycursor = mydb.cursor()
sql = "Show tables;"
mycursor.execute(sql)
myresult = mycursor.fetchall()
print(myresult)
for x in myresult:
print(x)
Please help me how can i resolve this.

Answer 1

You need to change the dialect to use MySQL and db to include the .db suffix in your endpoint.yml:
tracker_store:
type: SQL
dialect: "mysql" # the dialect used to interact with the db
url: somewhere
db: "chatbot.db"
username: "root"
password: "test"
More info in the SQLALchemy docs 😊

Answer 2

You need to install pymysql using pip.
tracker_store:
type: SQL
dialect: "mysql+pymysql"
url: "localhost"
db: "Rasabot"
username: "root"
password: "xyz"