Blog: jooq (Lukas Eder) |
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334 blogs
updated: 4 min. ago
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A fun report to write is to calculate a cumulative percentage. For example, when querying the Sakila database, we might want to calculate th...
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jOO is our second most popular library. It implements a set of useful extensions to the JDK's Stream API, which are useful especially when s...
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In my previous article, I showed what the very useful percentile functions (also known as inverse distribution functions) can be used for. U...
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B-Tree indexes are perfect when your data is uniformly distributed. They are not really useful, when you have skewed data. I'll explain late...
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B-Tree indexes are perfect when your data is uniformly distributed. They are not really useful, when you have skewed data. I'll explain late...
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Standard SQL is a beautiful language. Vendor specific implementations, however, have their warts. In Oracle, for example, it's not possible ...
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Annotation processors can be useful as a hacky workaround to get some language feature into the Java language. The best example is Lombok, w...
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Reporting a bug takes time, and trust me, every vendor appreciates your reporting of a bug! Your voice counts as many voices, for all the ot...
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A customer of my popular SQL training (which you should book!) has recently challenged me to optimise a hierarchical query that merges an ar...
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While jOOQ is not a full fledged ORM (as in an object graph persistence framework), there is still some convenience available to avoid hand-...
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