Tag Archives: tuning

Distribution, Not Just for Joins

So I think in previous posts the need for distribution and therefore the benefit for colocation of data to handle joins has been pretty well covered.  But there are several other scenarios where data needs to be distributed to process. … Continue reading

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Distributed Joins, Process Skew

This post will build on concepts introduced in the Distributed Joins, The Basics and Distributed Joins, Modeling for Colocation posts.  I’m assuming some familiarity with table skew, where a distribution key is chosen where some key values has significantly more rows than … Continue reading

Posted in Best Practices, Performance Tuning for Netezza | Tagged , , , , | 8 Comments

Distributed Joins, The Basics

This post is really about some base understanding that will be needed to understand some later performance methods.  I find to understand database performance it is helpful to understand and think how things are done at the most basic level.  … Continue reading

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