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How do you insert values with foreign keys in MySQL?

Mary-Kate Olsen
Release: 2024-10-29 16:20:02
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How do you insert values with foreign keys in MySQL?

Inserting Values with Foreign Keys in MySQL

When working with relational databases, it's often necessary to insert values into tables with foreign keys. Here's how to handle two specific cases:

CASE 1: Inserting a Student with an Existing Teacher

In this case, you know the name of the teacher and need to retrieve their ID from the TAB_TEACHER table. The following query uses a subquery to get the foreign key value:

CASE 2: Inserting a Student with a New Teacher

For this case, you need to insert both the new teacher and the new student. This requires two separate INSERT statements:

Please note, the specific syntax may vary depending on your MySQL version. For details, refer to the official documentation.

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