wuyunfeng commented on issue #1529: [CALCITE-3442] In ElasticSearch adapter, set `stored_fields = _none_` to prohibit FetchPhase get involved URL: https://github.com/apache/calcite/pull/1529#issuecomment-546847713 @danny0405 X-Pack SQL translate API can prove this: ``` POST /_sql/translate { "query": "SELECT k1,count(*) FROM test GROUP BY k1,k2", "fetch_size": 100 } ``` the result: ``` { "size": 0, "_source": false, "stored_fields": "_none_", "aggregations": { "groupby": { "composite": { "size": 100, "sources": [ { "612": { "terms": { "field": "k1", "missing_bucket": true, "order": "asc" } } }, { "613": { "terms": { "field": "k2", "missing_bucket": true, "order": "asc" } } } ] } } } } ```
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