Returning random rows in a random order from a relational database is a very hard problem. In this article we will see an antipattern, we will discuss why this problem is so hard, and we’ll examine some imperfect solutions.
Read morePaginating the results of an SQL query
One of the trickiest problems in SQL is to query rows in tranches. This is typically needed in a website search, or in a dynamic catalogue where products appear as you scroll down. You want the DBMS to only return …
Read moreLondon Open Source Databases meetups in July 2019
In July, London Open Source Databases group will see a meetup with Peter Zaitsev and one with Monty Widenius.
Read moreMySQL stored procedures: all ways to produce an output
There are many non-obvious ways to return values from MySQL stored procedures, and each of them solves particular problems.
Read moreDropping useless MySQL indexes (→Vettabase)
How to find useless indexes and get rid of them to improve your database performance.
Read more