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You are here: Home1 / Blog2 / Simon's PlanetPostgreSQL

Oracle’s rising open source problem

July 10, 2016/0 Comments/in Simon's PlanetPostgreSQL /by Simon Riggs

A salesman from Oracle recently spoke to my sales colleague at a conference, teasing him that he should “come make some money”. That was quite surprising, given Oracle’s well documented problems in gaining new sales, most especially what they say in their own public filings. The reply was unsurprisingly: “No, thanks – I’d like a […]

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Finding your PostgreSQL version

June 15, 2016/0 Comments/in 2ndQuadrant, Simon's PlanetPostgreSQL /by Simon Riggs

Questions How do you tell what version of PostgreSQL you are using? What is the version number of your PostgreSQL server? What’s the release of your Postgres server? What release is your Postgres database? How do I write a program that acts differently for different versions of the PostgreSQL server? Answer For a long time […]

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PgDay France 2016

June 1, 2016/1 Comment/in Simon's PlanetPostgreSQL /by Simon Riggs

31 May 2016 – http://pgday.fr/ PgDay France was a well attended conference with more than 140 attendees, with many presentations from PostgreSQL users further demonstrating just how popular PostgreSQL is now. It was good to see a large well organized conference in Lille, the “capital of Northern France”. Lille is an industrial hub and university […]

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Planning to succeed

April 8, 2016/5 Comments/in 2ndQuadrant, Simon's PlanetPostgreSQL /by Simon Riggs

PostgreSQL 9.6 has a lot of good features; many of the changes are in the SQL planner, aiming to improve performance by carefully selecting the right execution plan. The great thing here is that doing less work makes many queries much, much faster than they were before. First, we are now using Foreign Key data […]

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The Physics of Multi-Master

January 8, 2016/5 Comments/in Simon's PlanetPostgreSQL /by Simon Riggs

If you try to update the same data at the same time in multiple locations, your application has a significant problem, period. That’s what I call the physics of multi-master. How that problem manifests itself is really based upon your choice of technology. Choosing Postgres, Oracle or ProblemoDB won’t change the problem, just gives you […]

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Why Logical Replication?

January 6, 2016/0 Comments/in pglogical, Simon's PlanetPostgreSQL /by Simon Riggs

PostgreSQL has built-in streaming replication. Why do we need new replication? Well, in some cases, we do need more. Which is why we have pglogical. The existing replication is more properly known as Physical Streaming Replication since we are streaming a series of physical changes from one node to another. That means that when we […]

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Joins Don’t Scale!

December 22, 2015/0 Comments/in Simon's PlanetPostgreSQL /by Simon Riggs

“Joins Don’t Scale”. Well, that’s what I heard MongoDB said anyway. My response was “Huh? Yeh, they do”. So what gives? Who is right? Why the mixup? Well, first thing to realise is that the implicit topic we are talking about is massively parallel (MPP) databases, so what they are talking about is the scalability […]

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The End of MongoDB

December 10, 2015/1 Comment/in Simon's PlanetPostgreSQL /by Simon Riggs

On hearing news that MongoDB had lost half its value recently, the phrase “Half sunk” came to mind from Shelley’s Ozymandias. I met a traveller from an antique land Who said: “Two vast and trunkless legs of stone Stand in the desert. Near them, on the sand, Half sunk, a shattered visage lies, whose frown, […]

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