Media Summary: You can have NULL values in any column in your table, except for primary key columns. Use the keywords MySQL CREATE TABLE products ( product_id INT, product_name varchar(25), price DECIMAL(4, 2)
You can have NULL values in any column in your table, except for primary key columns. Use the keywords MySQL CREATE TABLE products ( product_id INT, product_name varchar(25), price DECIMAL(4, 2)
You can have NULL values in any column in your table, except for primary key columns. Use the keywords
MySQL #course #tutorial CREATE TABLE products ( product_id INT, product_name varchar(25), price DECIMAL(4, 2)
Introduction to Relational Databases in
Constraints
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Master SQL Constraints
not null constraint
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NOT NULL
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