{{ctrl.lastGenerateSQL}}

Use any SQL that can return Resultset such as:
- [[timestamp1, value1], [timestamp2, value2], ... ]

Macros:
- $from -> start timestamp of panel
- $to -> stop timestamp of panel
- $interval -> interval of panel

Example of SQL:
  SELECT count(*)
  FROM db.table
  WHERE ts > $from and ts < $to
  INTERVAL ($interval)
        

{{ctrl.lastQueryError}}