adriangb commented on code in PR #19957:
URL: https://github.com/apache/datafusion/pull/19957#discussion_r2764844890
##########
datafusion/physical-expr/src/projection.rs:
##########
@@ -660,9 +660,25 @@ impl ProjectionExprs {
}
}
} else {
- // TODO stats: estimate more statistics from expressions
- // (expressions should compute their statistics themselves)
- ColumnStatistics::new_unknown()
+ // TODO: expressions should compute their own statistics
Review Comment:
There are also APIs being proposed in
https://github.com/apache/datafusion/pull/19609
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