zoov-w opened a new pull request, #3696: URL: https://github.com/apache/calcite/pull/3696
[CALCITE-6274](https://issues.apache.org/jira/browse/CALCITE-6274) Two index of Elasticsearch join return empty result even if the data from both indexes can match。 create index test_01: ` PUT /test_01/_doc/1 { "doc_id" : 1, "doc_desc" : "doc01" } ` create index test_02: ` PUT /test_02/_doc/1 { "doc_id" : 1, "doc_score" : 90 } ` execute sql: ` select * from es.test_01 t1 join es.test_02 t2 on cast(t1._MAP['doc_id'] as bigint) = cast(t2._MAP['doc_id'] as bigint) ` the code generate by ElasticsearchToEnumerableConverter like this: subquery of index test_01: ` { return ((org.apache.calcite.adapter.elasticsearch.ElasticsearchTable.ElasticsearchQueryable) org.apache.calcite.schema.Schemas.queryable(root, root.getRootSchema().getSubSchema("es"), java.lang.Object[].class, "test_01")).find(java.util.Collections.EMPTY_LIST, java.util.Arrays.asList(new org.apache.calcite.util.Pair[] { new org.apache.calcite.util.Pair( "_MAP", java.util.Map.class), new org.apache.calcite.util.Pair( "_1", java.lang.Long.class)}), java.util.Arrays.asList(new org.apache.calcite.util.Pair[] { new org.apache.calcite.util.Pair( "doc_id", org.apache.calcite.rel.RelFieldCollation.Direction.ASCENDING)}), java.util.Collections.EMPTY_LIST, java.util.Arrays.asList(new org.apache.calcite.util.Pair[] {}), com.google.common.collect.ImmutableMap.of("$f1", "doc_id"), null, null); } ` project field names: `"_MAP", "_1"` subquery of index test_02: ` { return ((org.apache.calcite.adapter.elasticsearch.ElasticsearchTable.ElasticsearchQueryable) org.apache.calcite.schema.Schemas.queryable(root, root.getRootSchema().getSubSchema("es"), java.lang.Object[].class, "test_02")).find(java.util.Collections.EMPTY_LIST, java.util.Arrays.asList(new org.apache.calcite.util.Pair[] { new org.apache.calcite.util.Pair( "_MAP", java.util.Map.class), new org.apache.calcite.util.Pair( "_1", java.lang.Long.class)}), java.util.Arrays.asList(new org.apache.calcite.util.Pair[] { new org.apache.calcite.util.Pair( "doc_id", org.apache.calcite.rel.RelFieldCollation.Direction.ASCENDING)}), java.util.Collections.EMPTY_LIST, java.util.Arrays.asList(new org.apache.calcite.util.Pair[] {}), com.google.common.collect.ImmutableMap.of("$f1", "doc_id"), null, null); } ` project field names: `"_MAP", "_1"` This org.apache.calcite.adapter.elasticsearch.ElasticsearchTable.ElasticsearchQueryable#find function actually execute request, subq-query result projected according to second paramter fields. Field "_1" can not find from subq-query result. "_1" not in mappings {"$f1":"doc_id"}, cause two sub-query join condition value is null, so the result of sql is empty. This PR fix the problem, the sub-query project field names is: `"_MAP", "$f1"`. join condition field `$f1` can be find in mappings. The result of sql match expectations. -- This is an automated message from the Apache Git Service. To respond to the message, please log on to GitHub and use the URL above to go to the specific comment. To unsubscribe, e-mail: [email protected] For queries about this service, please contact Infrastructure at: [email protected]
