A document search on a billion row "EAV" table is predicted to take 134 days. With a few design tweaks and an efficient relational division algorithm, Peter Larsson got it down to milliseconds.
2019-08-15 (first published: 2013-12-09)
2,096 reads
For many years now we always seem to have been on the verge of the revolution in object databases, without it ever quite transpiring. Why is this?
2017-02-21 (first published: 2009-06-17)
553 reads
The next time you are tempted to hammer a performance problem with hardware, why not instead invest that time in hammering and refining your SQL queries? There are rich rewards to be had.
2014-12-26 (first published: 2009-11-02)
524 reads
It is late evening. Something is wrong with a database. You narrow down the possibilities, getting more frustrated and puzzled. Stay calm. Check the inputs systematically. No! The data going into that table is right, but when you then read it in the table, it's wrong. Why did I stop believing in the supernatural? Then it hits you. Every time it comes as a surprise. They're using triggers. (This editorial was originally published on Nov 10, 2008)
2013-02-19 (first published: 2008-11-10)
609 reads