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Postgres – EXPLAIN explained

105 点作者 onderkalaci超过 9 年前

7 条评论

dexen超过 9 年前
The tool for highlighting EXPLAIN output is provided on <a href="http:&#x2F;&#x2F;explain.depesz.com&#x2F;" rel="nofollow">http:&#x2F;&#x2F;explain.depesz.com&#x2F;</a> (as mentioned in a later slide). It&#x27;s commonly used when asking for help and discussing queries on #postgresql on Freenode.
cdman超过 9 年前
Can also warmly recommend the EXPLAIN visualizations generated by pgAdmin: <a href="http:&#x2F;&#x2F;www.pgadmin.org&#x2F;" rel="nofollow">http:&#x2F;&#x2F;www.pgadmin.org&#x2F;</a><p>See an (simple) example here: <a href="http:&#x2F;&#x2F;www.pgadmin.org&#x2F;images&#x2F;screenshots&#x2F;pgadmin3_macosx.png" rel="nofollow">http:&#x2F;&#x2F;www.pgadmin.org&#x2F;images&#x2F;screenshots&#x2F;pgadmin3_macosx.pn...</a>
jimktrains2超过 9 年前
And I haven&#x27;t completely finished my explanation of it! <a href="http:&#x2F;&#x2F;jimkeener.com&#x2F;posts&#x2F;explain-pg" rel="nofollow">http:&#x2F;&#x2F;jimkeener.com&#x2F;posts&#x2F;explain-pg</a><p>I love EXPLAIN, it&#x27;s such an amazing tool for figuring out how to get a query to run faster. It&#x27;s much more detailed than MySQL&#x27;s and often one of the reasons I list when people ask if they should checkout&#x2F;switch to pg (which you should!)
skrause超过 9 年前
Another EXPLAIN documentation, probably easier to read since it&#x27;s a PDF and not a slideshow: <a href="http:&#x2F;&#x2F;www.dalibo.org&#x2F;_media&#x2F;understanding_explain.pdf" rel="nofollow">http:&#x2F;&#x2F;www.dalibo.org&#x2F;_media&#x2F;understanding_explain.pdf</a>
hvo超过 9 年前
Thanks for this. I really like postgres community.They are vibrant and you will almost always learn one thing or the other from them.
iso8859-1超过 9 年前
Where is the video for this?
stevenringo超过 9 年前
Nice one. Is there an offline&#x2F;downloadable version available?
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