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- In this tutorial I have explained what is
- PostgresSQL - Tutorial 12 UNIQUE AND
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- WHAT IS CONSTRAINT? Define specific rules and behaviors for some of your columns. This is done by using constraints. In this ...
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Continue here: https://bit.ly/ MySQL #course #tutorial CREATE TABLE products ( product_id INT, product_name varchar(25), price DECIMAL(4, 2) Okay so the next constraint that I want to discuss is very straightforward it's the
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