Putting DEBUG Comments In Your SQL Statements Makes FusionReactor Query Tracing

Ben Nadel is thrilled to see that his SQL DEBUG comments show up in both the FusionReactor Cloud and Enterprise dashboards. This makes identifying performance bottlenecks in the database so much easier.

For years, I've been advocating that people put [DEBUG](https://www.bennadel.com/blog/3058-putting-debug-comments-in-your-sql-statements-makes-debugging-performance-problems-easier.htm) comments in their SQL statements to help identify performance bottlenecks in their applications. I feel so strongly about this that I'm absolutely nonplussed whenever I see a SQL query show-up in the MySQL slow-log or the process-list without a DEBUG statement. Recently, we installed FusionReactor at work; and, I was thrilled to see that my DEBUG statements were showing up in the database profiling that FusionReactor provides.

To see what I mean, let's create a test ColdFusion page that executes a slow SQL query that will show up in FusionReactor's slow transaction list. For this simulation, we can use MySQL's SLEEP() command:

<cfscript>

    dump( getPost( 3 ) );

    // ------------------------------------------------------------------------------- //
    // ------------------------------------------------------------------------------- //

    public array function getPost( required numeric id ) {

        // NOTE: We're using MySQL's SLEEP() command to simulate a performance bottleneck
        // in order to get this page to show up in FusionReactor's slow transaction log.
        var result = queryExecute(
            sql = "
                /* DEBUG: fusionReactorTesting.getPosts(). */
                SELECT
                    e.id,
                    e.content,
                    e.content_markdown,

                    -- Simulating a slow query, sleep for 5-seconds.
                    ( SLEEP( 5 ) ) AS temp
                FROM
                    blog_entry e
                WHERE
                    e.id = :id
                ;
            ",
            params = {
                id: { value: id, sqlType: "integer" }
            },
            options = {
                returnType: "array"
            }
        );

        return( result );

    }

</cfscript>

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