PostgreSQL tutorial - functions (Lesson 8)

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I wanna thank u a lot for this video, cozz of im starting to digging into postgres world, and this video was really helpful :D, blessings and good vibes from Perú :D

grdo
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Hello. I find your tutorial really helpful. Thank you. :) Am trying to create a function which will be used to calculate fine in a library system. I need to take two dates (the date the client returns the book with the date that the client should have returned on). It is supposed to do some calculation and multiply by $5 (fine per day) then gives me the answer. Can you help me on doing that, please? :) Thanks! 

puputneha
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This video made my day much more productive.

ddiotte
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Thank you for the useful video! From time to time I come back to watch it. It helps me in my work:)

youmeek
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good job, well played!
thank you so much

winex