count函数如何进行聚合

使用count函数进行聚合的正确用法如下：

SELECT
  http_method,
  count(http_method)
FROM
  apigateway
WHERE
  service_id = 'ecs' Group BY http_method

或者

SELECT
  http_method
FROM
  apigateway
WHERE
  service_id = 'ecs' DISTRIBUTE BY http_method

错误用法：将会报错。

SELECT
  http_method,
  count(http_method)
FROM
  apigateway
WHERE
  service_id = 'ecs' DISTRIBUTE BY http_method