I'm looking for recent performance statistics on PostgreSQL vs. Oracle vs. Microsoft SQL Server. Recently someone has been trying to convince my client to switch from SyBASE to Microsoft SQL Server (they originally wanted to go with Oracle but have since fallen in love with Microsoft). All this time I've been recommending PostgreSQL for cost and stability (my own testing has shown it to be better at handling abnormal shutdowns and using fewer system resources) in addition to true cross-platform compatibility.
If I can show my client some statistics that PostgreSQL outperforms these (I'm more concerned about it beating Oracle because I know that Microsoft's stuff is always slower, but I need the information anyway to protect my client from falling victim to a 'sales job'), then PostgreSQL will be the solution of choice as the client has always believed that they need a high-performance solution. I've already convinced them on the usual price, cross-platform compatibility, open source, long history, etc. points, and I've been assured that if the performance is the same or better than Oracle's and Microsoft's solutions that PostgreSQL is what they'll choose. Thanks in advance. ---------------------------(end of broadcast)--------------------------- TIP 8: explain analyze is your friend