[question] how to get a row count? about sql_exporter

[dominikschulz]

Thanks for giving this exporter a try. We're preparing some more docs that will make things a little clearer.

The important detail here is, that the exporter looks for columns matching the names in the "values" array.

This should work:

  - name: "msg_count"
    help: "Number of messages in the posts table"
    values:
      - "msg_count"
    query: "SELECT COUNT(*) AS msg_count FROM posts;"

I.e. you need to alias your value columns if they don't have a valid SQL name already.

[ketzacoatl]

Ah, ok, well that makes a lot more sense. Thank you for the guidance, and for sharing your work on this project with the world!