text: {### select the frame to debug the function ###}
  {% if session_id %}
  SELECT
      p.func AS func, p.targetName AS targetName, p.linenumber AS linenumber,
      CASE WHEN p.func <> 0 THEN pldbg_get_source({{session_id}}::INTEGER, p.func) ELSE '<No source available>' END AS src,
      (SELECT
          s.args
       FROM pldbg_get_stack({{session_id}}::INTEGER) s
       WHERE s.func = p.func ORDER BY s.level LIMIT 1) AS args
  FROM pldbg_select_frame({{session_id}}::INTEGER, {{frame_id}}::INTEGER) p
  {% endif %}
  