peter-toth edited a comment on issue #23802: [SPARK-26893][SQL] Allow partition pruning with subquery filters on file source URL: https://github.com/apache/spark/pull/23802#issuecomment-464730637 > if subquery filter can be a partition filter, why can't it be a data filter? `DataSourceStrategy.translateFilter` can't transform them to `Filter` so they will not be pushed down to data source. (Partition filters are handled in `FileSourceScanExec.selectedPartitions` and there is no need to transform them to `Filter`.)
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