How to Add a Foreign Key Using ALTER in MySQL?

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ABakhsh46483222
Superunknown
Posts: 3
Joined: Mon Sep 19, 2022 10:46 am

How to Add a Foreign Key Using ALTER in MySQL?

Post by ABakhsh46483222 »

How to Add a Foreign Key Using ALTER in MySQL?
The ALTER command allows you to quickly and easily add a foreign key constraint. Whether you want to Add Foreign Key Using ALTER in MySQL Workbench or another DB management tool, clicking through the process and doing it step by step is easy, and the result is clean, use the foreign key that guarantees data integrity within your database.

MySQL alter table set column unique

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ALTER TABLE contactsADD CONSTRAINT contacts_unique UNIQUE (reference_number);
Source: Codeprozone.com
MySQL alter add foreign key

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ALTER TABLE ordenes ADD ticket VARCHAR(50) NOT NULL;ALTER TABLE ordenes ADD CONSTRAINT fk_ticket FOREIGN KEY (ticket) REFERENCES tickets(ticket);
In MySQL, it is possible to add a foreign key by using the ALTER command. First, log in to your MySQL server and run the following query:
Humphrey12
Strange Fruit
Posts: 98
Joined: Mon Feb 28, 2022 10:53 am

Re: How to Add a Foreign Key Using ALTER in MySQL?

Post by Humphrey12 »

Cool. Thanks for sharing, ABakhsh46483222!
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