SQL: Cartesian Product; Joins

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  1. Dave Sullivan
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Комментарии
Автор

well explained. i liked how you mention that all joins begin with a cartesian product of the tables, then are reduced based on other commands.

liamDdawg
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dataquerying classes have forced me to watch this video over and over again and it's a wonderful explanation, thanks man

crashbrocksta
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Well, that was refreshing. I actually understood the concept correctly now. Thank you

natnaelsisay
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Thank you for clearing out my concept Dr. Dave!

RagibShahariar
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Best explanation out there, thank you sir!

thibault
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this is a crystal clear clarification that i had sought for years, thanks a!

mk
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Really clear explanation. thanks mate.

thelegendaryblah
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My SQL DB Design and Dev professor does not want us to use cartesian products and will give us 0s on assignments if we use them. (He instead wants us to select on one table and join everything to it). Dave doesn't seem to be as against them in this video. Why is that? Aren't they bad practice?

leecm
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hahahaha majors in "the occult" XD nice

Jose
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Why using Cartesian join and not just inner join?

superfreiheit
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I'm more of a Count Chocula man myself... student id lol.

lukemartin