Sorry, but there are no more tags available to filter with.
This is an answer (attempt) for Dror Engel's dev challenge ( here - hebrew ). I will translate his challenge according to popular demand :) Well, Dror, assuming that in your DB table you only keep the sum of each transaction and it's date, and each account starts off from a balance of 0, then the following SQL query can give you the "starting value" to work with in each page (the balance at row "one after the last" relevant to the current page), given the current page...