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Posted to reviews@spark.apache.org by GitBox <gi...@apache.org> on 2019/05/08 15:23:06 UTC
[GitHub] [spark] arkguil removed a comment on issue #22696:
[SPARK-25708][SQL] HAVING without GROUP BY means global aggregate
arkguil removed a comment on issue #22696: [SPARK-25708][SQL] HAVING without GROUP BY means global aggregate
URL: https://github.com/apache/spark/pull/22696#issuecomment-490529740
Indeed. Postgresql fails with
`ERROR: column "t.id" must appear in the GROUP BY clause or be used in an aggregate function Position: 8`
Basically, HAVING implementation seems very different across RDBMS... But you are right that the standard clearly state that a GROUP BY is REQUIRED: https://cloud.google.com/bigquery/docs/reference/standard-sql/query-syntax#having-clause
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