Basic SQL: Creating a Primary Key Constraint Part 3 - Step-by-Step (Method 3 of 3)
In this step-by-step tutorial, you will learn how to create a primary key constraint in SQL using the third method. By following clear instructions and examples, you'll gain a comprehensive understanding of how to define and implement primary keys in your database tables. This essential skill will enhance your data integrity and improve query performance. Join us now and become proficient in creating primary key constraints in SQL!
create table table_name(
field number,
);
Alter table table_name add constraint constraint_name primary key (field);