[GitHub] [incubator-pinot] jtao15 commented on a change in pull request #6891: Allow multiple alias for the same selection column.

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

jtao15 commented on a change in pull request #6891:
URL: https://github.com/apache/incubator-pinot/pull/6891#discussion_r628564212



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File path: pinot-core/src/main/java/org/apache/pinot/core/query/reduce/BrokerReduceService.java
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@@ -91,7 +91,8 @@ private static void updateAlias(QueryContext queryContext, BrokerResponseNative
     if (resultTable == null) {
       return;
     }
-    Map<ExpressionContext, String> aliasMap = queryContext.getAliasMap();
+    // Use list to support multiple alias for the same column.
+    Map<ExpressionContext, List<String>> aliasMap = queryContext.getAliasMap();

Review comment:
       Changed to use a list instead of map.




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