About Lukas Eder

Lukas is a Java and SQL enthusiast developer. He created the Data Geekery GmbH. He is the creator of jOOQ, a comprehensive SQL library for Java, and he is blogging mostly about these three topics: Java, SQL and jOOQ.

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How to Eliminate Bugs Through High Cohesion

Intuition tells us that methods like these ones suffer from a distinct code smell:                     CompilationTask getTask( ...
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An Open Source License to Increase Your Street Credibility

Many of us geeks don’t really care about users, tractions, etc. when we spam GitHub with our little toy projects. I mean, who knows if we really have the time to maintain them? Certainly, ...
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Why Embracing Legacy is Wise

Legacy isn’t sexy. When hearing “legacy”, people think of COBOL. Those good old days when people talked to machines like they would talk to robots. But COBOL is not the only type ...
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The JDBC Boolean Compatibility List

Interestingly, boolean types have been introduced only late in the SQL standard, namely in SQL:1999. Even today, not all databases natively support BOOLEAN or BIT types. Most importantly, ...
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Java 8 Friday Goodies: Local Transaction Scope

At Data Geekery, we love Java. And as we’re really into jOOQ’s fluent API and query DSL, we’re absolutely thrilled about what Java 8 will bring to our ecosystem. We have blogged ...
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Java 8 Friday Goodies: Lambdas and SQL

At Data Geekery, we love Java. And as we’re really into jOOQ’s fluent API and query DSL, we’re absolutely thrilled about what Java 8 will bring to our ecosystem. We have blogged ...
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You’re Very Likely to Have Gotten SQL Date Time Arithmetic Wrong!

You’re very likely to have gotten SQL date time arithmetic wrong. And why is that? Google it! You’ll quickly find blog posts like these:Date / Time Arithmetic with Oracle 9 / ...
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JDBC 4.0’s Lesser-known Clob.free() and Blob.free() Methods

When I talk about jOOQ at conferences, I always show this slide containing a bunch of very common JDBC mistakes that people often commit:                    Six ...
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Java 8 Friday Goodies: Lambdas and Sorting

At Data Geekery, we love Java. And as we’re really into jOOQ’s fluent API and query DSL, we’re absolutely thrilled about what Java 8 will bring to our ecosystem. We have blogged ...
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Java 8 Friday Goodies: The New New I/O APIs

At Data Geekery, we love Java. And as we’re really into jOOQ’s fluent API and query DSL, we’re absolutely thrilled about what Java 8 will bring to our ecosystem. We have blogged ...
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