3 reasons you should use Postgres Functions and Transactions

Transactions allow related statements to be grouped together - ensuring every statement succeeds or they all get rolled back. In this video, Jon Meyers shows how to use PostgreSQL Functions to run multiple statements in a Transaction.

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By wrapping the logic to keep the database consistent in a Postgres Function you can improve the security of your application, as the database is responsible for ensuring the data is correct. Additionally, this can improve the performance of your entire system as this Postgres Function only requires a single RPC network request to be invoked, rather than a web application sending each step of the transaction as a separate request.

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00:00 Why you should use Postgres Functions and Transactions
00:36 What is a Transaction?
01:54 Overview of Email Client project
06:36 Runs multiple statements in a Transaction with Postgres Functions
11:02 Invoke Postgres Function from JavaScript using supabase-js and RPC
13:12 Using Cascade Deletes to remove related data from other tables
16:40 Implement an authorization system in PostgeSQL with Row Level Security policies

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