[GitHub] [carbondata] ravipesala commented on a change in pull request #3306: [CARBONDATA-3452] Fix select query failure when substring on dictionary column with join

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ravipesala commented on a change in pull request #3306: [CARBONDATA-3452] Fix select query failure when substring on dictionary column with join
URL: https://github.com/apache/carbondata/pull/3306#discussion_r311382806
 
 

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 File path: integration/spark2/src/main/scala/org/apache/spark/sql/optimizer/CarbonLateDecodeRule.scala
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 @@ -698,11 +698,20 @@ class CarbonLateDecodeRule extends Rule[LogicalPlan] with PredicateHelper {
         u
       case p: Project if relations.nonEmpty =>
         val prExps = p.projectList.map { prExp =>
+          var isSubstringPresent = false
           prExp.transform {
-            case attr: AttributeReference =>
-              updateDataType(attr, attrMap, allAttrsNotDecode, aliasMap)
+            case subStr: Substring =>
 
 Review comment:
   what about other UDF's like length , trunc etc. ?

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