houqp commented on a change in pull request #506:
URL: https://github.com/apache/arrow-datafusion/pull/506#discussion_r646050062
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File path: datafusion/src/physical_plan/window_frames.rs
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@@ -0,0 +1,337 @@
+// Licensed to the Apache Software Foundation (ASF) under one
Review comment:
This mod is coupled with sqlparser AST and doesn't seem to be physical
specific. Maybe it's better to move this mod into logical plane instead and
reimport in physical plane?
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