Pagination keeps showing the same portion of SQL data

Question

I have a really large data set from SQL that i need to paginate.

I have an issue with my pagination code. The code does show the page number in the URL

Answer 1

Using OFFSET and LIMIT for pagination of web pages leads to two bugs -- duplicated rows shown, and rows not shown.

Why?

1. You are pondering the "first" 10 rows on one web page.
2. Meanwhile a row is INSERTed or DELETEd that belongs in the first 10.
3. You click [Next] and go to the page that shows the next 10 rows. But wait, it is not showing the "next" 10 rows, it is showing rows #11-20. And, since something changed in rows 1-10, the rows are not really continuing where you left off.

I just gave you a hint of how to avoid it -- "remember where you left off" instead of using OFFSET. More .