Why is my HASH JOIN broken?
A hash join is often the most optimal way to perform a join, but sometimes the database will use a merge join no matter how hard to try to tell it otherwise. The two most common mistakes that will "break" your hash joins are nulls and data types.
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Видео Why is my HASH JOIN broken? канала SQL and Database explained!
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blog: https://connor-mcdonald.com
twitter: https://twitter.com/connor_mc_d
The Podcast!
https://podcasts.apple.com/au/podcast/the-spoken-nerd/id1552316025
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A free Oracle database forever ?! Oh yes indeed!
https://www.oracle.com/cloud/free
Music: Night Owl (Broke For Free), Kevin Mcleod (incomptech), Dyalla
#oracle #sql #datatypes
Видео Why is my HASH JOIN broken? канала SQL and Database explained!
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