In MySQL, you can use the Event Scheduler to periodically refresh or update table data at specified intervals.

Here’s a step-by-step guide on how to set up a scheduled event to refresh table data every 1 hour:

1. Enable Event Scheduler:

Before you can use the Event Scheduler, make sure it is enabled. You can enable it by setting the event_scheduler system variable.

-- Enable the Event Scheduler
SET GLOBAL event_scheduler = ON;

2. Create a Stored Procedure:

Create a stored procedure that contains the logic to refresh or update the table data. Replace your_table and your_refresh_logic with your actual table name and refresh logic.

DELIMITER //

CREATE PROCEDURE RefreshTableData()
BEGIN
    -- Your refresh logic here (e.g., replace this comment with actual SQL statements)
    -- UPDATE your_table SET column1 = value1, column2 = value2, ...;

    -- Commit changes if needed
    -- COMMIT;
END //

DELIMITER ;

3. Create a Scheduled Event:

Create a scheduled event that calls the stored procedure at the desired interval (every 1 hour in this case).

-- Create a scheduled event
CREATE EVENT IF NOT EXISTS hourly_refresh
ON SCHEDULE EVERY 1 HOUR
DO
    CALL RefreshTableData();

4. Verify the Event:

You can check if the event is created and enabled by querying the events table.

-- Check events
SHOW EVENTS;

Important Notes:

• Ensure that the event_scheduler variable is set to ON at the session or global level.
• Adjust the stored procedure (RefreshTableData()) with the actual SQL statements to refresh your table data.
• Make sure to test the stored procedure independently before creating the scheduled event.
• The example assumes that your MySQL user has the necessary privileges to create events.

By following these steps, you can set up a scheduled event in MySQL to refresh a table data every 1 hour. Adjust the table name and refresh logic according to your specific use case.