alvherre is a PostgreSQL enthusiast and contributes regularly to 2ndQuadrant blog.
Entries by alvherre
A partitioning system in PostgreSQL was first added in PostgreSQL 8.1 by 2ndQuadrant founder Simon Riggs. It was based on relation inheritance and used a novel technique to exclude tables from being scanned by a query, called “constraint exclusion”. While it was a huge step forward at the time, it is nowadays seen as cumbersome […]
I spent a couple of days in São Paulo, Brazil last week, for the top-notch PGConf.Brazil 2018 experience. This year I gave a talk about improvements in the declarative partitioning area in the upcoming PostgreSQL 11 release — a huge step forward from what PostgreSQL 10 offers. We have some new features, some DDL handling […]
I just committed a patch by Pavel Stěhule that adds the XMLTABLE functionality to PostgreSQL 10. XMLTABLE is a very useful feature dictated by the SQL/XML standard, that lets you turn your XML data into relational form, so that you can mix it with the rest of your relational data. This feature has many uses; keep reading for […]
Over at pgsql-general, Bráulio Bhavamitra asks: I wonder if there is any plans to move postgresql entirely to a columnar store (or at least make it an option), maybe for version 10? This is a pretty interesting question. Completely replacing the current row-based store wouldn’t be a good idea: it has served us extremely well […]
PostgreSQL’s Release Management Team is requesting your input on patches that are most likely to cause bugs or instability. I’m sure you have an opinion on that! Please cast your votes by filling this form.
Many years ago, Michelle Caise submitted a patch to generate code coverage reports for the PostgreSQL code base, based on the lcov utility. Although I cannot find any record of an actual patch in the mailing list archives, Peter Eisentraut committed it some time later, and applied further refinements later. Today I’m announcing a new […]
If you’ve been following PostgreSQL development for the last few years, you’ve probably heard the term commitfest manager a few times. You probably already know what a commitfest is, but why is there a manager? Since I spent a good deal of time this past January managing one, I’ll explain. At its heart, a PostgreSQL […]