taiyang-li commented on issue #8183:
URL: 
https://github.com/apache/incubator-gluten/issues/8183#issuecomment-2558746526

   @liujiayi771 it is ok for clickhouse backend, because CH plan optimization 
would merge adjacent project operators. Besides, whether they are merged or not 
in CH doesn't have more impacts than duplicated expression evaluations. 


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