Tweepy streamer not capturing full tweet text

Question

I am currently scraping tweets via Tweepy into a mySQL database. I am new to routing data into a server, so I am having trouble adjusting my code to get the extended version of a tweet. Here's the code for reference:

class listener(StreamListener):

def on_data(self, data):

    all_data = json.loads(data)
    tweet = all_data["text"]
    username = all_data["user"]["screen_name"]

    c.execute("INSERT INTO MSQL4 (time, username, tweet) VALUES (%s,%s,%s)",
        (time.time(), username, tweet))

    conn.commit()

    print((username,tweet))

    return True
def on_error(self, status):
    print(status)

I am sure I just need to insert a command somewhere in the function. Any advice would be greatly appreciated.

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For reference, the code above is not my own creation-- I pulled this code from a tutorial a week ago. All credit to the original author for the code.