[GitHub] [spark] cloud-fan edited a comment on pull request #28717: [SPARK-29947][SQL][followup] ResolveRelations should return relations with fresh attribute IDs

[GitBox <gi...@apache.org>]

cloud-fan edited a comment on pull request #28717:
URL: https://github.com/apache/spark/pull/28717#issuecomment-638407200


   @brkyvz I tried triple self-join but can't find a buggy case:
   ```
   sql("select * from t t1 join t t2 join t t3 where t1.a = t3.a").show
   
   sql("select * from t t1 join t t2 on t1.b = t2.a join t t3 on t1.a = t3.a").show
   
   sql("select * from t t1 join t t2 on t1.b = t2.a join t t3 on t2.a = t3.a").show
   ```
   
   Please let me know if you see some broken join queries.


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