Cache select query

Hello guys. I used a simple code to print every n seconds result from db:

with pyodbc.connect(**odbcconnection) as cnxn:
    cnxn.setdecoding(pyodbc.SQL_WCHAR, encoding='utf-8')
    cnxn.setencoding(encoding='utf-8')
    while True:
        cursor = cnxn.cursor()
        time.sleep(2)
        cursor.execute("SELECT * FROM table GROUP by `name` DESC LIMIT 100")
        rows = cursor.fetchall()
        for row in rows:
            print(row)

All ok, but if i change some information on db its nothing change when print show output Only if i restarted script i see a changed iformation

Whats i am doing wrong?! Thanks.

[gordthompson]

I was able to reproduce your issue under MySQL. You can ensure that you get the latest results by adding

cnxn.rollback()

at the end of your while True: loop.

[keitherskine]

Without an ORDER BY clause on your SQL, the results from the query are indeterminate, particularly so with a LIMIT on it. Put an ORDER BY clause on the SQL query and try again.

(also, minor point, but the line cursor = cnxn.cursor() does not need to be in the loop, it could be placed before the while statement)