randyli commented on issue #18400:
URL: https://github.com/apache/datafusion/issues/18400#issuecomment-3495420114
Hi, I'm tracing the process of pysical plan optimazation. I found that the
`FilterExec` has been removed if the `pushdown_filters` is enabled.
```
Optimized physical plan by LimitedDistinctAggregation:
OutputRequirementExec: order_by=[], dist_by=Unspecified
FilterExec: value@2 > 9900
DataSourceExec: file_groups={1 group:
[[var/folders/2q/27mhxg0n061848qd7hf5lt780000gp/T/.tmpMC3pnf/large_demo.parquet]]},
projection=[id, name, value], file_type=parquet
Optimized physical plan by FilterPushdown:
OutputRequirementExec: order_by=[], dist_by=Unspecified
DataSourceExec: file_groups={1 group:
[[var/folders/2q/27mhxg0n061848qd7hf5lt780000gp/T/.tmpMC3pnf/large_demo.parquet]]},
projection=[id, name, value], file_type=parquet, predicate=value@2 > 9900,
pruning_predicate=value_null_count@1 != row_count@2 AND value_max@0 > 9900,
required_guarantees=[]
```
Perhaps I didn't fully understand what you meant; please give me some hints
or examples.
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