- Access Custom Metrics and Metric Builder for MySQL
- Use the Metric Builder for MySQL
- Create a Custom MySQL Metric [Example]
- Add a Custom MySQL Metric to a Databoard
- Additional Information
How to access Custom Metrics and Metric Builder for MySQL
Navigate to Metrics > Custom Metrics to access the Metric Builder for MySQL. Click the green + New Custom Metric button and select your connected MySQL Data Source from the Data Source drop-down list.
Metric Builder is available on the Professional and higher plans. Request a trial of Metric Builder by following these steps.
How to use the Metric Builder for MySQL
- Daily Values: This Data Type should be selected when your Metric reflects the most up-to-date Daily Value for the Metric. In Databox, the latest daily entry will be displayed for the Custom Metric.
- Total Values: This Data Type should be selected when your Metric reflects the current total Value for the Metric. In Databox, the latest entry will be displayed for the Custom Metric.
For longer Date Ranges, data will be not aggregated and the most recent Value will be displayed for the selected Date Range. This is the main difference between "Total Values" and "Daily Values."
- Event Values: This Data Type should be selected when your Metric Value selection reflects individual Value(s) for the Metric at the specified Date/ Timestamp. This Data Type is the default selection because it is appropriate for the majority of use cases.
For longer Date Ranges, individual Metric Values will be aggregated for the entire Date Range and the aggregated Value will be displayed for the Custom Metric.
How to create a Custom MySQL Metric [Example]
The Metric Builder for MySQL is designed so you can directly enter SQL queries. For our example, we will use a WordPress MySQL Data Source and create a Custom Metric that returns a list of WordPress authors and their current post count.
- Navigate to Metrics > Custom Metrics
- Click the green + New Custom Metric button
- Select the appropriate MySQL Data Source
- In order to accurately explain what this Custom Metric is reporting on, we'll name the Custom Metric "Authors by Post Count"
- In the SQL field, we will enter the query below. A semicolon at the end of the query is not necessary
SELECT COUNT(p.ID) AS posts, u.display_name, p.date AS date FROM dbwp_users u, dbwp_posts p WHERE p.post_author = u.ID AND p.post_type = 'post' GROUP BY u.ID
If you don’t see any data, double check your SQL query and try it directly in your Database. If no results are displayed there, an error exists in your query. You should also chec to confirm that the MySQL user has the necessary permissions to access the Database from Databox's public IP.
How to add a Custom MySQL Metric to a Databoard
Learn how to add a Custom Metric to a Databoard here.
- Query results are limited to 10,000 rows. If you expect your query to return over 10,000 rows or if you're not sure how many rows will be returned, be sure to LIMIT the query. If you need more than 10,000 rows in order to successfully report on your MySQL data in Databox, feel free to submit your request on our Roadmap here.
- The query must contain a column named "Date." If you need to, use AS in your SELECT statement to satisfy this requirement
- One column should always contain the Metric Value
- "Null" values will not be recognized. Use a COALESCE function when needed. Learn more here.