adriangb commented on code in PR #15769:
URL: https://github.com/apache/datafusion/pull/15769#discussion_r2052745403
##########
datafusion/core/src/datasource/listing/table.rs:
##########
@@ -982,18 +980,6 @@ impl TableProvider for ListingTable {
return Ok(TableProviderFilterPushDown::Exact);
}
- // if we can't push it down completely with only the
filename-based/path-based
- // column names, then we should check if we can do parquet
predicate pushdown
- let supports_pushdown =
self.options.format.supports_filters_pushdown(
- &self.file_schema,
- &self.table_schema,
- &[filter],
- )?;
-
- if supports_pushdown == FilePushdownSupport::Supported {
- return Ok(TableProviderFilterPushDown::Exact);
- }
Review Comment:
I think many users of DataFusion (based on our usage, talks I've seen and
examples we have) use custom `TableProvider` implementations.
I would keep `supports_filters_pushdown` so that `TableProviders` can do
`Exact` pruning of filters, e.g. using partition columns.
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