zhaorongsheng commented on a change in pull request #24118: [SPARK-26736][SQL]
if filter condition `And` has non-determined sub function it does not do
partition prunning
URL: https://github.com/apache/spark/pull/24118#discussion_r268375093
##########
File path:
sql/catalyst/src/main/scala/org/apache/spark/sql/catalyst/planning/patterns.scala
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@@ -63,10 +63,16 @@ object PhysicalOperation extends PredicateHelper {
val substitutedFields =
fields.map(substitute(aliases)).asInstanceOf[Seq[NamedExpression]]
(Some(substitutedFields), filters, other,
collectAliases(substitutedFields))
- case Filter(condition, child) if condition.deterministic =>
- val (fields, filters, other, aliases) =
collectProjectsAndFilters(child)
- val substitutedCondition = substitute(aliases)(condition)
- (fields, filters ++ splitConjunctivePredicates(substitutedCondition),
other, aliases)
+ case filter @ Filter(condition, child)
+ if condition.deterministic || condition.isInstanceOf[And] =>
+ val determinedCondition = getDeterminedExpression(condition)
+ if (determinedCondition.isDefined) {
+ val (fields, filters, other, aliases) =
collectProjectsAndFilters(child)
+ val substitutedCondition =
substitute(aliases)(determinedCondition.get)
+ (fields, filters ++
splitConjunctivePredicates(substitutedCondition), other, aliases)
+ } else {
+ (None, Nil, filter, Map.empty)
+ }
Review comment:
I have added the test case named `Partition pruning - with filter containing
non-determined condition in sub And-expr` in `PruningSuite`.
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