How to Pass Parameters to MySQL Query Callbacks in Node.js?

Passing Parameters to MySQL Query Callbacks in Node.js

When issuing MySQL queries in Node.js, developers often need to pass custom parameters to the callback function to make specific data available after the query execution.

To address this requirement, use the following approach:

Include the custom parameters as an array argument in the query function call. For example, consider the following code:

connection.query(
    'SELECT * FROM table WHERE>

In this example, the user_id and start parameters are passed as an array argument to the query function.

Upon the callback's invocation, the custom parameters are accessible within the callback function. In this case, user_id and start can be retrieved and utilized for further processing.

It's worth noting that the array containing the custom parameters is automatically escaped by the MySQL library, eliminating the need for manual escaping.

Therefore, using this approach allows you to pass and retrieve custom parameters seamlessly within MySQL query callbacks in Node.js.

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