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I created a refresh database button in my web/flask form, but when I try to refresh, I get this error message:

sqlite3.ProgrammingError: Incorrect number of bindings supplied. The current statement uses 0, and there are 1 supplied.

I tried all the various combinations in cursor.execute(query, (database,)) but I just couldn't figure out how to fix it...

What I have tried:

Python
 #refresh portfolio stats
@app.route('/refresh', methods = ['GET','POST'])
def refresh():
    if request.method == 'POST':
        database = "data.sqlite"
        connection = sql.connect(database)

        query = ''' UPDATE
                    portfolio_table
                    SET
                    portfolio_cost_total = (SELECT SUM(product_cost_total)
                                            FROM product_table)
                    WHERE
                    portfolio_table.portfolio_id = '1' '''

        cursor = connection.cursor()
        cursor.execute(query, (database,))

        db.session.commit()
        #df = pd.read_sql_query(query, connection)
        #df.head()

    return redirect(url_for('index'))
Posted
Updated 21-Jan-21 19:42pm

1 solution

This code has no parameters and therefore if you're getting that error, its not from here.

Although I dont see you constructing this object

cursor.execute(query, (database,))


So I wonder if it existed before and had a parameter added elsewhere?
 
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v2
Comments
pythonHumanBot 22-Jan-21 8:04am    
ok, I changed the last part to:
cursor = connection.cursor()
cursor.execute(query)
db.session.commit()

So, now no error but the database doesn't update

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