sql - grafana 警报条件

Question

我在 clickhouse 中有一些统计数据.. 导入到 grafana

SELECT
    $timeSeries as t,
    count() as LOL
FROM $table

WHERE status = 'LOL'

GROUP BY t
ORDER BY t

我用下一个属性创建了一些警报：

Evaluate every 1m for 1m
conditions:
when count() of query(A, 12h,now) is above 0

grafana 向我发送通知：

[Alerting] ISP = *** alert
URL: some url 

Metrics:
SomeMetrics: 1.000

但！最后一次计数是在 20 小时前！！！Grafana 必须送我 - 0// 请帮助