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The Myth About Slow SQL JOIN Operations
In my recent SQL work for a large Swiss bank, I have maintained nested database view monsters whose unnested SQL code amounted up to 5k lines of code, joining the same table over and over again in...
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MIT Prof. Michael Stonebraker: “The Traditional RDBMS Wisdom is All Wrong”
A very interesting talk about the future of DBMS was recently given at EPFL by MIT Professor and VoltDB Co-founder and CTO Michael Stonebraker. In a bit less than one hour, he explains his views with...
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Column Stores: Teaching an Old Elephant New Tricks
Prof. Michael Stonebraker is a controversial visionary, who is known for nothing less than Ingres, Postgres, Vertica, Streambase, Illustra, VoltDB, SciDB, besides being a renowned MIT professor. My...
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jOOQ Newsletter September 2013
Subscribe to this newsletter here SQL Popularity and Controversy In the last newsletter, SQL popularity was well addressed by the tremendous feedback our articles received: 10 Common Mistakes Java...
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PostgreSQL 9.3 Released!
A great database has just gotten better. PostgreSQL 9.3 has been released today. While improved reliability and availability is certainly quite a thrilling addition, from the jOOQ perspective, the most...
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Crazy Translations of Simple SQL Expressions to Various SQL Dialects
SQL is standardised by ISO / IEC. We have wonderful standards, such as SQL-92, SQL:1999, SQL:2003, SQL:2008. Right? In theory. In practice, many things do not have an equivalence between the actual SQL...
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Annotatiomania™ 2.1
It’s been a while since I have last ranted about annotations and the increasing Annotatiomania™ in the JEE ecosystem. I haven’t been exposed to much JEE either, until yesterday, when I was confronted...
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People Managing to Correctly Spell “Moron” in a Blog Comment
The notorious ORM pro / con discussion heavily amuses me. I always find it very funny when people have passionate discussions about which solution is better, rather than discussing about which solution...
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PostgreSQL Syntax is a Mystery Only Exceeded by its Power
I just ran across this rather powerful PostgreSQL example statement from the manual. It reads Increment the sales count of the salesperson who manages the account for Acme Corporation, and record the...
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Why PostgreSQL is so Awesome
Just recently, I’ve blogged about PostgreSQL 9.3 having been released, which is awesome enough as PostgreSQL finally supports materialised views and updatable views. I have then blogged about...
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jOOQ Newsletter September 17, 2013
Subscribe to this newsletter here. SQL for calculations SQL can be used for heavy calculations. This doesn’t mean that it has to, of course. Many Java-oriented software architects are reluctant to...
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Amazing Web Applications with PL/SQL and Formspider
In the good old days, dynamic web applications were created using cgi-bin and C. Yes, C as in pre-C++. Today, this might seem odd or even crazy. But why not. And why not create a website using PL/SQL?...
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Do You View Database Applications as Military Campaigns?
Military Campaigns?? Haha. Let’s meet Capt. DBA, mastering Sun Tsu’s Art of SQL: http://de.scribd.com/doc/15490992/The-Art-of-SQL Citing from the book cover: Do you view database applications as...
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Why do We Need RDBMS?
There was this recent Quora question about why we need RDBMS: Why not just use text files? What can RDBMS do that a simple text file cannot? Or, why not use several different text files to represent...
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The Premature Return to SQL
In online communities, the NoSQL topic (much like the ORM topic) is a guarantee to stir emotions. Many emotions are stirred by evangelists on either side for ideological or marketing reasons. Here’s an...
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The 10 Most Popular DB Engines (SQL and NoSQL)
How to objectively measure the popularity of a DB engine? Good question! And there’s an Austrian company (Solid IT) who claims to have the answer. The company focuses on “Big Data und NoSQL”, but this...
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jOOQ Newsletter October 10, 2013
Subscribe to this newsletter here. jOOQ 3.2 Released After a bit of time, jOOQ 3.2 has finally been released. This interesting release mainly includes two new SPIs (Service Provider Interfaces), which...
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Eclipse’s Awesome Block Selection Mode
This post is about an awesome Eclipse feature, that is completely underestimated and hidden in the menu. Yet, it is so useful in so many situations. The awesome “Block Selection Mode” which can be...
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Recursive SQL for Data Normalisation
Recursive SQL can be awesome, although a bit hard to read in its SQL standard beauty. Let’s assume you have some aggregated data with dates and a number of events per date: | DATE | COUNT |...
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Why Staying in Control of Your SQL is so Important
Lots of blog posts and research papers are written about the topics of scaling up and scaling out. This interesting blog post, for instance, sheds some light on the two strategies with respect to...
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