FOREIGN KEY constraint - SQL MUCH? PostgreSQL beginner tutorial series 2020

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The FOREIGN KEY constraint is used for when data in a column or group of columns matches data in a column or group of columns from another table. This is helpful when joining tables!

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Very well done. Thank you. I learned a handy trick: drag and drop object name into your SQL.

sdmagic
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This is just awesome video. And what's most important, You show how to name your Frimary Key with user-defined name, which is an info quite hard to find on YouTube.
Thank you so much.
Maybe create another video when you have some free time. I'd watch it for sure.

michalroesler
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If I haven't declared any foreign keys in tables, how would I update tables and add foreign keys to them?

manithsuy
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It was really helpful, thank you so much :)

zoevalentinamirandacontrer
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Could you please explain via a scenario why and where would the Foreign Key be useful. Please ....

vishalkurup
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You can tell me how specify foreign key in postgresql reference to column in external data base

yanettfernandezcarrero
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hello! thank u for ur helpful videos
why is one of the videos private?

abdolrahimtooraanian