How Can I Efficiently Update Multiple MySQL Records Using an Array of IDs?

Utilizing MySQL Queries with Array-Based Content IDs

Given an array containing item IDs, the task is to execute a MySQL query using each ID in the array sequentially. Specifically, the query involves updating individual records based on their ID.

Solution: Embracing Prepared Statements

It's crucial to employ prepared statements to safeguard against SQL injections. Below are two alternative approaches:

1. Iterative Update Using a Single Parameter:

• Prepare an SQL statement with a single placeholder for the ID:

  $sql = "UPDATE MyTable SET LastUpdated = GETDATE() WHERE id = ?";

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• Use a loop to bind each ID to the placeholder and execute the query.

2. Single-Step Update Using Multiple Parameters:

• Prepare an SQL statement with placeholders for all IDs:

  $params = implode(",", array_fill(0, count($ids), "?"));
  $sql = "UPDATE MyTable SET LastUpdated = GETDATE() WHERE id IN ($params)";

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• Use dynamic binding to create an array of references for the IDs.
• Call bind_param with the types and references.
• Execute the query once to update all records.

Advantages of Prepared Statements:

• Security: Prevents SQL injections.
• Efficiency: Reuses compiled statements for faster execution.
• Optimized Data Transfer: Sends only parameter values, reducing network traffic.

Remember to tailor your choice of approach to the specific operation being performed (e.g., UPDATE or SELECT).

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