beliefer commented on a change in pull request #30943:
URL: https://github.com/apache/spark/pull/30943#discussion_r549955100
##########
File path:
sql/catalyst/src/main/scala/org/apache/spark/sql/catalyst/analysis/Analyzer.scala
##########
@@ -2123,19 +2123,58 @@ class Analyzer(override val catalogManager:
CatalogManager)
if (isDistinct || filter.isDefined) {
throw
QueryCompilationErrors.distinctOrFilterOnlyWithAggregateFunctionError(
wf.prettyName)
+ } else if (ignoreNulls) {
+ wf match {
+ case nthValue: NthValue =>
+ nthValue.copy(ignoreNulls = ignoreNulls)
+ case _ =>
+ throw
QueryCompilationErrors.ignoreNullsWithUnsupportedFunctionError(
+ wf.prettyName)
+ }
} else {
wf
}
+ case owf: FrameLessOffsetWindowFunction =>
+ if (isDistinct || filter.isDefined) {
+ throw
QueryCompilationErrors.distinctOrFilterOnlyWithAggregateFunctionError(
+ owf.prettyName)
+ } else if (ignoreNulls) {
+ owf match {
+ case lead: Lead =>
+ lead.copy(ignoreNulls = ignoreNulls)
+ case lag: Lag =>
+ lag.copy(ignoreNulls = ignoreNulls)
+ case _ =>
+ throw
QueryCompilationErrors.ignoreNullsWithUnsupportedFunctionError(
+ owf.prettyName)
+ }
+ } else {
+ owf
+ }
// We get an aggregate function, we need to wrap it in an
AggregateExpression.
case agg: AggregateFunction =>
if (filter.isDefined && !filter.get.deterministic) {
throw
QueryCompilationErrors.nonDeterministicFilterInAggregateError
}
- AggregateExpression(agg, Complete, isDistinct, filter)
+ if (ignoreNulls) {
+ val aggFunc = agg match {
+ case first: First => first.copy(ignoreNulls =
ignoreNulls)
+ case last: Last => last.copy(ignoreNulls = ignoreNulls)
+ case _ =>
+ throw
QueryCompilationErrors.ignoreNullsWithUnsupportedFunctionError(
+ agg.prettyName)
+ }
+ AggregateExpression(aggFunc, Complete, isDistinct, filter)
+ } else {
+ AggregateExpression(agg, Complete, isDistinct, filter)
+ }
// This function is not an aggregate function, just return the
resolved one.
case other if (isDistinct || filter.isDefined) =>
Review comment:
I got it.
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