Github user wzhfy commented on a diff in the pull request:
https://github.com/apache/spark/pull/19783#discussion_r153975383
--- Diff:
sql/catalyst/src/main/scala/org/apache/spark/sql/catalyst/plans/logical/statsEstimation/FilterEstimation.scala
---
@@ -529,6 +575,55 @@ case class FilterEstimation(plan: Filter) extends
Logging {
Some(percent)
}
+ /**
+ * Returns the selectivity percentage for a combined op-dataNumber in
the column's
+ * current valid range [min, max]
--- End diff --
Returns the selectivity percentage for a binary condition given the
column's current value range.
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