Question

在以下查询中，我一直收到错误id - thumbnail 3 - http://wwww....

我无法弄明白为什么我会得到这个错误。

[42803] ERROR: column "distributed_stats_storage_facebook_post.impressions" must appear in the GROUP BY clause or be used in an aggregate function

我认为这里的这一部分是错误源自的地方，但似乎是要求我按汇总函数分组？

WITH qualified_posts AS (
    SELECT
      platform_data_api_post.external_id,
      platform_data_api_account.display_name
    FROM platform_data_api_post
      INNER JOIN platform_data_api_account
        ON platform_data_api_account._id = platform_data_api_post.account_id
      INNER JOIN platform_data_api_platform
        ON platform_data_api_platform._id = platform_data_api_account.platform_id
      INNER JOIN platform_data_api_post_type
        ON platform_data_api_post_type._id = platform_data_api_post.post_type_id
      INNER JOIN distributed_stats_storage_facebook_post
        ON distributed_stats_storage_facebook_post.external_object_id = platform_data_api_post.external_id
    WHERE platform_data_api_platform.name = 'facebook'
          AND platform_data_api_post_type.name = 'shared_link'
          AND platform_data_api_post.published >
              (DATE_PART(epoch, DATEADD(day, -10, DATE_TRUNC('day', GETDATE())))) :: BIGINT
    GROUP BY 1, 2
    HAVING max(distributed_stats_storage_facebook_post.stories_by_action_type__share) > 0
           AND max(distributed_stats_storage_facebook_post.consumptions_by_type__link_clicks) > 0
),

impressions_percentiles_by_page AS (
      SELECT qualified_posts.external_id,
             qualified_posts.display_name,
             max(impressions) AS impressions,
             ntile(20) over (PARTITION BY qualified_posts.display_name order by impressions) AS impressions_percentile
      FROM  distributed_stats_storage_facebook_post
      INNER JOIN qualified_posts ON qualified_posts.external_id = distributed_stats_storage_facebook_post.external_object_id
      WHERE distributed_stats_storage_facebook_post.external_object_id IN (qualified_posts.external_id)
      GROUP BY 1, 2
  )

SELECT * FROM impressions_percentiles_by_page;

对我来说更奇怪的是，当我使用我正在使用的不同指标推出impressions_percentiles_by_page AS ( SELECT qualified_posts.external_id, qualified_posts.display_name, max(impressions) AS impressions, ntile(20) over (PARTITION BY qualified_posts.display_name order by impressions) AS impressions_percentile FROM distributed_stats_storage_facebook_post INNER JOIN qualified_posts ON qualified_posts.external_id = distributed_stats_storage_facebook_post.external_object_id WHERE distributed_stats_storage_facebook_post.external_object_id IN (qualified_posts.external_id) GROUP BY 1, 2 )子句时。下面的完整查询工作正常。除了他们查询的列，这两个条款是相同的

impressions_percentiles_by_page

Redshift / PSQL组错误的聚合

0 个答案: