CODEWITHSUNDEEP
pythonmysql
user1676300
user1676300

Reputation: 135

Python loop querying MySQL - query results not updated?

I've got a small bit of python code that queries mySQL, 

while True:
    print "running SQL query"
    cursor.execute('select * from sites where stage="NEW"')
    results = cursor.fetchall() #Fetch results
    for row in results:
        print "change detected" #simplified line for testing
    print "sleeping"
    sleep(10)

When no records match output is :

running SQL query
sleeping
running SQL query
sleeping

Manually create SQL record that will match (allow time for loop to repeat), output is still :

running SQL query
sleeping
running SQL query
sleeping

Stop script and restart, test output is as expected :

running SQL query
change detected
sleeping

So the results are being cached? or the query not being re-run?

How would I deal with this, bearing in mind the query is run quite frequently (I did wonder about closing the DB connection and re-opening everytime, but this seems excessive?)

Upvotes: 2

Views: 1949

Answers (1)

Carles Mitjans
Carles Mitjans

Reputation: 4866

If you look the Documentation for commit() it can give a hint on why your code doesn't work.

Try using database.commit() after sleep(10) and see if it works.

Upvotes: 1

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