Solution #57
Solution #57
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Thank you for your hard work on this SQL script! 😊 While you've done a great job meeting most of the task requirements, there are a few critical issues that need to be addressed to ensure the functionality and integrity of the database:
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Column Naming:
- In the
Productstable, the columnProductNameshould be renamed toNameto match the task requirements. - In the
Orderstable, the primary key column should be renamed fromOrdersIDtoID. - In the
OrderItemstable, the primary key column should be renamed fromOrderItemsIDtoID.
- In the
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Data Type Adjustments:
- The
Addresscolumn in theCustomerstable should be changed fromVARCHAR(255)toVARCHAR(100)as specified in the requirements.
- The
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Foreign Key Constraints:
- The
ProductIDin theOrderItemstable,OrderIDin theOrderItemstable, andCustomerIDin theOrderstable need to be defined asNULLto support theON DELETE SET NULLbehavior.
- The
These changes are necessary to ensure that the database schema aligns with the task requirements and functions correctly. Once these issues are resolved, your solution will be ready for approval. Keep up the great work, and don't hesitate to reach out if you need further assistance! 🚀
✨ Please rate this review in the Platform's notification center. I will be grateful for your feedback! ✨
🔄 Fix the issues, commit the changes, and then re-request my review using the Re-request review button in the Reviewers tab.
| OrdersID INT AUTO_INCREMENT, | ||
| CustomerID INT, | ||
| Date DATE, | ||
| FOREIGN KEY (CustomerID) REFERENCES Customers(ID) ON DELETE SET NULL, |
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The foreign key constraint on CustomerID in the Orders table uses ON DELETE SET NULL. However, CustomerID is an INT and cannot be set to NULL unless it is explicitly defined as NULL. Consider changing CustomerID INT to CustomerID INT NULL to allow this behavior.
| OrderItemsID INT AUTO_INCREMENT, | ||
| OrderID INT, | ||
| ProductID INT, | ||
| FOREIGN KEY (OrderID) REFERENCES Orders(OrdersID) ON DELETE SET NULL, |
There was a problem hiding this comment.
The foreign key constraint on OrderID in the OrderItems table uses ON DELETE SET NULL. However, OrderID is an INT and cannot be set to NULL unless it is explicitly defined as NULL. Consider changing OrderID INT to OrderID INT NULL to allow this behavior.
| OrderID INT, | ||
| ProductID INT, | ||
| FOREIGN KEY (OrderID) REFERENCES Orders(OrdersID) ON DELETE SET NULL, | ||
| FOREIGN KEY (ProductID) REFERENCES Products(ID) ON DELETE SET NULL, |
There was a problem hiding this comment.
The foreign key constraint on ProductID in the OrderItems table uses ON DELETE SET NULL. However, ProductID is an INT and cannot be set to NULL unless it is explicitly defined as NULL. Consider changing ProductID INT to ProductID INT NULL to allow this behavior.
There was a problem hiding this comment.
Thank you for your submission! 🎉 While your SQL script is mostly correct, there are a few critical issues that need to be addressed to fully align with the task requirements:
-
Column Naming:
- In the
Productstable, rename the columnProductNametoName. - In the
Orderstable, rename the primary key column fromOrdersIDtoID. - In the
OrderItemstable, rename the primary key column fromOrderItemsIDtoID.
- In the
-
Data Type Adjustments:
- Change the
Addresscolumn in theCustomerstable fromVARCHAR(255)toVARCHAR(100).
- Change the
-
Foreign Key Constraints:
- Define
ProductIDin theOrderItemstable,OrderIDin theOrderItemstable, andCustomerIDin theOrderstable asINT NULLto support theON DELETE SET NULLbehavior.
- Define
These changes are crucial for ensuring that your database schema functions correctly and meets the specified requirements. Please review these comments and make the necessary adjustments to improve your code. Keep up the great work and continue learning from these experiences! 🚀
✨ Please rate this review in the Platform's notification center. I will be grateful for your feedback! ✨
| FirstName VARCHAR(50), | ||
| LastName VARCHAR(50), | ||
| Email VARCHAR(50), | ||
| Address VARCHAR(255), |
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The Address column in the Customers table should be changed from VARCHAR(255) to VARCHAR(100) as specified in the task requirements.
| ); | ||
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| CREATE TABLE Orders ( | ||
| OrdersID INT AUTO_INCREMENT, |
There was a problem hiding this comment.
The primary key column in the Orders table should be renamed from OrdersID to ID to match the task requirements.
| OrdersID INT AUTO_INCREMENT, | ||
| CustomerID INT, | ||
| Date DATE, | ||
| FOREIGN KEY (CustomerID) REFERENCES Customers(ID) ON DELETE SET NULL, |
There was a problem hiding this comment.
The CustomerID column should be defined as INT NULL to support the ON DELETE SET NULL behavior.
| ); | ||
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||
| CREATE TABLE OrderItems ( | ||
| OrderItemsID INT AUTO_INCREMENT, |
There was a problem hiding this comment.
The primary key column in the OrderItems table should be renamed from OrderItemsID to ID to match the task requirements.
|
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||
| CREATE TABLE OrderItems ( | ||
| OrderItemsID INT AUTO_INCREMENT, | ||
| OrderID INT, |
There was a problem hiding this comment.
The OrderID column should be defined as INT NULL to support the ON DELETE SET NULL behavior.
| CREATE TABLE OrderItems ( | ||
| OrderItemsID INT AUTO_INCREMENT, | ||
| OrderID INT, | ||
| ProductID INT, |
There was a problem hiding this comment.
The ProductID column should be defined as INT NULL to support the ON DELETE SET NULL behavior.
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