alamb commented on code in PR #13874:
URL: https://github.com/apache/datafusion/pull/13874#discussion_r1894978630
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datafusion/core/src/dataframe/parquet.rs:
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@@ -74,8 +74,16 @@ impl DataFrame {
let file_type = format_as_file_type(format);
+ let plan = if options.sort_by.is_empty() {
+ self.plan
+ } else {
+ LogicalPlanBuilder::from(self.plan)
+ .sort(options.sort_by)?
+ .build()?
+ };
+
Review Comment:
I think copy_to inserts the data from whatever the input plan is (if there
is a redundant sort the optimizer will remove it). Is that what you are asking?
It is an interesting question of how to communicate "this table is sorted"
information for newly written files. Is this what you are talking about?
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