Postgresql Add Foreign Key

PostgreSQL Add Foreign Key If Not Exist

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PostgreSQL Add Foreign Key If Not Exist Registrations to Courses

In this PostgreSQL tutorial, how to add a foreign key if not exist in PostgreSQL, where you will understand why you need to add the foreign key to tables. Also, you will use the PL\PGSQL with table pg_constraint to check whether the existing table has a foreign key or not. I will also explain to … Read more >>