SQL Foreign Keys Creating a table with a foreign key
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Example
In this example we have an existing table, SuperHeros.
This table contains a primary key ID.
We will add a new table in order to store the powers of each super hero:
CREATE TABLE HeroPowers
(
ID int NOT NULL PRIMARY KEY,
Name nvarchar(MAX) NOT NULL,
HeroId int REFERENCES SuperHeros(ID)
)
The column HeroId is a foreign key to the table SuperHeros.
