chunweilei edited a comment on issue #1162: [CALCITE-2343] PushProjector with 
OVER expression causes infinite loop (Chunwei Lei)
URL: https://github.com/apache/calcite/pull/1162#issuecomment-483494117
 
 
   > Besides, should we push down RexOver's operands? Say, inside the 
expression sum(x + x) over (), x + x is strong and can be preserved into 
Project.
   
   Yes, currently it will push down the operands. You can find it int the test.

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