chunweilei commented on issue #1162: [CALCITE-2343] PushProjector with OVER 
expression causes infinite loop (Chunwei Lei)
URL: https://github.com/apache/calcite/pull/1162#issuecomment-483499418
 
 
   @zhztheplayer The first commit is not complete due to only finding the input 
refs. So I update the PR, including:
   * Using `ProjectJoinTransposeRule#preserveExprCondition` to make sure that 
`RexOver` will not be pushed past join(it works and seems more clear)
   * Add a test to make sure that the operands of `RexOver` will be pushed past 
join

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