How does batch updates impact performance or memory usage?

Batch updates can significantly improve the performance and memory usage of applications that interact with databases. When updating multiple records at once, the application reduces the number of database connections and round trips required to execute each update individually. This consolidated approach minimizes network overhead and leads to efficient use of resources, reducing the overall time taken for the operations. Additionally, batch updates can help in managing memory usage more effectively as they require less temporary storage and processing power for handling multiple transactions.

Here is an example of how to execute batch updates in PHP:


            <?php
            $conn = new PDO('mysql:host=localhost;dbname=test', $username, $password);
            $conn->setAttribute(PDO::ATTR_ERRMODE, PDO::ERRMODE_EXCEPTION);

            $conn->beginTransaction();

            $stmt = $conn->prepare("UPDATE users SET status = :status WHERE id = :id");
            
            $status = 'active';
            $ids = [1, 2, 3];
            foreach ($ids as $id) {
                $stmt->bindParam(':status', $status);
                $stmt->bindParam(':id', $id);
                $stmt->execute();
            }

            $conn->commit();
            ?>

How does batch updates impact performance or memory usage?

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How does batch updates impact performance or memory usage?

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