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  1. Couchbase Server
  2. MB-42474

Index aggregates pushdown wrongly

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    Description

      CREATE INDEX cx1 ON default(type, a1 );
      		 
       
      		 
      UPSERT INTO default VALUES ("c001", {"type": "doc", "a1":[{"name":"a1"}, {"name":"a2"}]}),
      		 
                          VALUES ("c002", {"type": "doc", "a1":[{"name":"b1"}, {"name":"a2"}]}),
      		 
                          VALUES ("c003", {"type": "doc", "a1":[{"name":"b1"}, {"name":"a2"}]});
      		 
       
      		 
      SELECT COUNT(1) FROM default AS d
      		 
      WHERE d.type = "doc" AND (EVERY v IN a1 SATISFIES v.name != "b1" END OR d.a1 IS MISSING);
      		 
       
      		 
      SELECT * FROM default AS d
      		 
      WHERE d.type = "doc" AND (EVERY v IN a1 SATISFIES v.name != "b1" END OR d.a1 IS MISSING);

      count query returns 3, non-count query returns 1

      Index is not array Index. array field is Scalar value. count query can cover. But the EVERY predicate is not pushed to indexer. It should not push index aggregation.
      Also note EVERY query can't push any index pushdowns.

      Workaround:
      SELECT COUNT(1) FROM default AS d WHERE d.type = "doc" AND (EVERY v IN IFMISSING(a1,[]) SATISFIES v.name != "b1" END);
      EVERY is true for empty ARRAY.

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          View 4 older comments
          ajay.bhullar Ajay Bhullar added a comment -

          verified in 7.0.0-3646 using the steps in the description count is now returning 1 as well as 1 doc being returned

          ajay.bhullar Ajay Bhullar added a comment - verified in 7.0.0-3646 using the steps in the description count is now returning 1 as well as 1 doc being returned
          build-team Couchbase Build Team added a comment -

          Build couchbase-server-6.5.1-6313 contains query commit 89d8869 with commit message:
          MB-42474 Set exact spans properly in case of multiple spans for the same index

          build-team Couchbase Build Team added a comment - Build couchbase-server-6.5.1-6313 contains query commit 89d8869 with commit message: MB-42474 Set exact spans properly in case of multiple spans for the same index
          ajay.bhullar Ajay Bhullar added a comment -

          verified in 6.5.1-6313 with the steps in the description, count and query both return 1 document (count returns 1)

          ajay.bhullar Ajay Bhullar added a comment - verified in 6.5.1-6313 with the steps in the description, count and query both return 1 document (count returns 1)
          ajay.bhullar Ajay Bhullar added a comment -

          verified in all versions the fix was pushed to

          ajay.bhullar Ajay Bhullar added a comment - verified in all versions the fix was pushed to
          build-team Couchbase Build Team added a comment -

          Build couchbase-server-6.5.2-6601 contains query commit 89d8869 with commit message:
          MB-42474 Set exact spans properly in case of multiple spans for the same index

          build-team Couchbase Build Team added a comment - Build couchbase-server-6.5.2-6601 contains query commit 89d8869 with commit message: MB-42474 Set exact spans properly in case of multiple spans for the same index

          People

            mihir.kamdar Mihir Kamdar (Inactive)
            Sitaram.Vemulapalli Sitaram Vemulapalli
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            Dates

              Created:
              Updated:
              Resolved:

              PagerDuty