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https://issues.apache.org/jira/browse/DRILL-3444?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
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Parth Chandra updated DRILL-3444:
---------------------------------
Assignee: Mehant Baid (was: Daniel Barclay (Drill))
> Implement Is Not Null/Is Null on List of objects - [isnotnull(MAP-REPEATED)]
> error
> -----------------------------------------------------------------------------------
>
> Key: DRILL-3444
> URL: https://issues.apache.org/jira/browse/DRILL-3444
> Project: Apache Drill
> Issue Type: Improvement
> Components: Execution - Data Types, Functions - Drill
> Environment: Drill 1.0
> Reporter: Tugdual Grall
> Assignee: Mehant Baid
> Priority: Critical
> Fix For: 1.2.0
>
>
> It is not possble to use the IS NULL / IS NOT NULL operator on an attribuite
> that contains a list of "object". (it is working with a list of scalar types)
> Query:
> {code}
> select *
> from dfs.`/working/json_array/*.json` p
> where p.tags IS NOT NULL
> {code}
> Document:
> {code}
> {
> "name" : "PPRODUCT_002",
> "price" : 200.00,
> "tags" : [ { "type" : "sports" } , { "type" : "ocean" }]
> }
> {code}
> Error:
> {code}
> org.apache.drill.common.exceptions.UserRemoteException: SYSTEM ERROR:
> org.apache.drill.exec.exception.SchemaChangeException: Failure while trying
> to materialize incoming schema. Errors: Error in expression at index -1.
> Error: Missing function implementation: [isnotnull(MAP-REPEATED)]. Full
> expression: --UNKNOWN EXPRESSION--.. Fragment 0:0 [Error Id:
> 384e6b86-ce17-4eb9-b5eb-27870a341c90 on 192.168.99.13:31010]
> {code}
> Workaround:
> By using a sub element it is working, for example:
> {code}
> select *
> from dfs.`/Users/tgrall/working/json_array/*.json` p
> where p.tags.type IS NULL
> {code}
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