Github user arina-ielchiieva commented on a diff in the pull request:
https://github.com/apache/drill/pull/1138#discussion_r172606583
--- Diff:
exec/java-exec/src/main/java/org/apache/drill/exec/planner/sql/SqlConverter.java
---
@@ -277,6 +279,25 @@ public String deriveAlias(
return SqlValidatorUtil.getAlias(node, ordinal);
}
+ /**
+ * Checks that specified expression is not implicit column and
+ * adds is to a select list, ensuring that its alias does not
+ * clash with any existing expressions on the list.
+ */
+ @Override
+ protected void addToSelectList(
--- End diff --
Could you please add comment explaining when this method is used and how
know when to add columns to Avro table and not for Dynamic?
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