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Databases

angel angel
angel angel
6,620 Points

SQL UPDATE?

IS this well written to update a database

```SQL UPDATE products SET categoryID = :category_id productCode = :code, productName = :name, listPrice = :price

          WHERE productID = :product_id  ```

3 Answers

Steven Parker
Steven Parker
229,980 Points

You need some punctuation.

It looks like you still need to put commas between the column settings.

I'm assuming the names beginning with colons represent values and are not other columns, but you didn't show how those get set.

angel angel
angel angel
6,620 Points
<?php
// Get the product data

$category_id = filter_input(INPUT_POST, 'category_id', FILTER_VALIDATE_INT);
$code = filter_input(INPUT_POST, 'code');
$name = filter_input(INPUT_POST, 'name');
$price = filter_input(INPUT_POST, 'price', FILTER_VALIDATE_FLOAT);




// Validate inputs
if ($category_id == null || $category_id == false || 
        $code == null || $name == null || $price == null || $price == false) {
    $error = "Invalid product data. Check all fields and try again.";
    include('error.php');
} else {
    require_once('database.php');

    // Add the product to the database  
    $query = "UPDATE products
                 SET categoryID = :category_id, 
                productCode = :code, 
                 productName = :name, 
                 listPrice= :price

            WHERE  categoryID = :category_id , productCode = :code ,productName = :name, 
                 listPrice = :price ";


    $statement = $db->prepare($query);
    $statement->bindValue(':category_id', $category_id);
    $statement->bindValue(':code', $code);
    $statement->bindValue(':name', $name);
    $statement->bindValue(':price', $price);
    $statement->execute();
    $statement->closeCursor();


    // Display the Product List page
    include('index.php');
}
?> ```
angel angel
angel angel
6,620 Points

This is how everything look.

Steven Parker
Steven Parker
229,980 Points

Now your WHERE clause needs work.

It looks like you expanded your WHERE clause, but unlike the SET list, here you would not use commas. Instead you would combine your conditions with things like AND or OR.

But if you intended to use AND, the entire expression would only update rows that already had the values you were setting, essentially doing nothing to the data! You may need to rethink what you are intending to do.