Joining Tables Using Primary and Foreign Keys

Subject: Joining Tables Using Primary and Foreign Keys


In the context of the "Product" and "Pre-Release" tables, the key challenge lies in linking these tables through their primary and foreign keys. The foreign key acts as a bridge, connecting common fields in two distinct tables, whereas the primary key is unique to each table.


A viable solution involves employing an
"Inner Join"
operation utilizing the "Primary Key" of the "Product" table and the corresponding "Foreign Key" in the "Pre-Release" table. Here's an example SQL query demonstrating this approach:


```sql

SELECT *

FROM Product AS p

INNER JOIN PreRelease AS prel

ON p.product_id = prel.product_id

ORDER BY p.product_id;

```


In this query, "p" and "prel" serve as aliases for the "Product" and "Pre-Release" tables, respectively. The `INNER JOIN` statement connects the tables by matching the "product_id" from the "Product" table with the corresponding "product_id" in the "Pre-Release" table. The result is a merged dataset containing relevant information from both tables. Finally, the `ORDER BY` clause organizes the results based on the "product_id" for better clarity.


Feel free to reach out if you have further questions or need additional assistance! 

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