sandeep-katta edited a comment on issue #24182: [SPARK-27246][SQL]scalar 
subquery with no columns throws exception in spark shell
URL: https://github.com/apache/spark/pull/24182#issuecomment-475621300
 
 
   "scalar subquery with no column" UT is failing 
   
   Reason: `treeString` is throwing exception , [code 
here](https://github.com/apache/spark/pull/24136/files#diff-f70523b948b7af21abddfa3ab7e1d7d6R185).
 Earlier this statement was in debug log, since debug is disabled this 
statement never executed in UT, now as per the new changes this `treeString`  
API is called so it is throwing exception.

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