cannot get sqlalchemy and pandas (to_sql) to write an dataframe index date into a MySQL DB

Question

I read from an API the following data into a pandas dataframe:

Now, I want to write this data into a MySQL-DB-table, using pandas to_sql:

In MySQL, the column is set up correctly, but has not written the values:

Then I looked in the debugger to show me the dataframe:

I thought it would maybe a formatting issue, and added the following lines:

In the debugger, it looks now fine:

But now, in the database, it wants to write the index column as text

... and interrupts the execution with an error:

Is there a way to get this going, aka to write df index data as date into a MySQL DB using pandas to_SQL in connection with a sqlalchemy engine?

Edit: Table schema:

DataFrame Header:

Answer 1

It seems you are using Date column as primary key. I would suggest not to use that as primary key instead you should use Date + Ticker as primary key.