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https://issues.apache.org/jira/browse/CALCITE-5124?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
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ASF GitHub Bot updated CALCITE-5124:
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Labels: pull-request-available (was: )
> LIMIT won't work when GROUP BY two or more columns in Elasticsearch Adapter
> ---------------------------------------------------------------------------
>
> Key: CALCITE-5124
> URL: https://issues.apache.org/jira/browse/CALCITE-5124
> Project: Calcite
> Issue Type: Bug
> Components: elasticsearch-adapter
> Affects Versions: 1.30.0
> Reporter: ZheHu
> Assignee: Yu Xu
> Priority: Major
> Labels: pull-request-available
>
> Add one doc(like following doc4) in AggregationTest :
> {code:java}
> String doc4 = "{val1:1, cat4:'2018-01-02'}"
> {code}
> Then running the following test case:
> {code:java}
> @Test void dateCat2() {
> CalciteAssert.that()
> .with(AggregationTest::createConnection)
> .query("select val1, cat4 from view group by val1, cat4 limit 2")
> .returnsUnordered("val1=1; cat4=1514764800000",
> "val1=1; cat4=1514851200000",
> "val1=null; cat4=1576108800000");
> }
> {code}
> We can see that *+limit 2+* in SQL doesn't take effect. The generated ES
> script is:
> {code:java}
> {
> "_source": false,
> "size": 0,
> "stored_fields": "_none_",
> "aggregations": {
> "g_val1": {
> "terms": {
> "field": "val1",
> "missing": -9223372036854775808,
> "size": 2
> },
> "aggregations": {
> "g_cat4": {
> "terms": {
> "field": "cat4",
> "missing": 253402214400000,
> "size": 2
> }
> }
> }
> }
> }
> }
> {code}
> There are two bucket aggregations in the script, which both have the size 2.
> However, the size can only control the doc's num for the current bucket, when
> two buckets interact, the total results cannot be assured.
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