如何使用fetchmany（）获取下一组结果？

Question

I want to fetch a hundred of results from MySql using fetchmany(100) in Python. But I am wondering if there's a way to fetch the next set of results in case what I want is not available in the fetched results. So it will be something like, fetch the next 100 results.

Is this possible? And if yes then how can it be done?!

Answer 1

Instead of using fetchmany(), you can use fetchall(), but include in your select query the following:

SELECT * from data limit 00,30; 

The 00 indicates the position The 30 indicates the number of the rows you want to output as the result.

Hence, you can make introduce the position using a variable that increases every time you want to fetch more results.

Eg

position= 00
while True:
    nothing = input("Do you want more input?")

    data = c.execute("SELECT * from data limit {}, 50".format(amount))
    data = c.fetchall()
    position += 50