• Whatever the main premise of your article, you mentioned a "very simple four-way join" that "took ten times as long" in PostgreSQL as it did in SQL Server. I have been trying to get my Microsoft-worshipping supervisor to more seriously consider open source, and have been recommending PostgreSQL over MySQL based on its more mature capabilities and fewer potential licensing problems. So you can understand that I really want to know more details about such a shocking statement as you have made. Please elaborate.