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different joins, other than rows 1:1 , name collisions for rows #40

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steltenpower opened this issue Jun 1, 2017 · 0 comments

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steltenpower commented Jun 1, 2017

In http://data-lessons.github.io/library-sql/04-joins-aliases/

I see nothing mentioned about different types and naming for joins, as in https://www.w3schools.com/sql/sql_join.asp

I'd like it more explicitly explained what happens when it's other than 1:1 row-match

Also 2 tables can have exact same row names. I'd like to see an explanation, or a remark at least

mkuzak added the mozsprint label

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