Github user jinfengni commented on a diff in the pull request:
https://github.com/apache/drill/pull/379#discussion_r53360482
--- Diff:
exec/java-exec/src/main/java/org/apache/drill/exec/physical/base/GroupScan.java
---
@@ -35,6 +35,8 @@
public interface GroupScan extends Scan, HasAffinity{
public static final List<SchemaPath> ALL_COLUMNS =
ImmutableList.of(SchemaPath.getSimplePath("*"));
+ public static final List<SchemaPath> EMPTY_COLUMNS = ImmutableList.of();
--- End diff --
Nice catch. It's no longer needed. (Originally, I intended to convert NULL
to empty_columns. But not it's not necessary). I'll remove that. thx.
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