UNLISTED

01 Nov 2022

DB praktikum 3

Projektion - $\pi$ - column/spalte
Selection - $\sigma$ - row/zeile

So:

SELECT *  <- Projektion
FROM table <- Selektion
WHERE ... <- Selektion

TODO HAVING - used as WHERE in group by, any other differences?
TODO COALESCE
TODO Natural join, semi-join..

uni
uni/db

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