Github user gatorsmile commented on a diff in the pull request:
https://github.com/apache/spark/pull/17487#discussion_r109201000
--- Diff:
sql/catalyst/src/main/scala/org/apache/spark/sql/catalyst/analysis/ResolveTableValuedFunctions.scala
---
@@ -105,7 +105,7 @@ object ResolveTableValuedFunctions extends
Rule[LogicalPlan] {
override def apply(plan: LogicalPlan): LogicalPlan = plan
resolveOperators {
case u: UnresolvedTableValuedFunction if
u.functionArgs.forall(_.resolved) =>
- builtinFunctions.get(u.functionName) match {
+ builtinFunctions.get(u.functionName.toLowerCase) match {
--- End diff --
@hvanhovell Just did a search. Do we still need to check the case
sensitivity setting of the analyzer in this case?
Based on [the Hive
doc](https://cwiki.apache.org/confluence/display/Hive/LanguageManual+UDF),
> All Hive keywords are case-insensitive, including the names of Hive
operators and functions.
Our regular function names are always case insensitive. See the
[code](https://github.com/apache/spark/blob/master/sql/catalyst/src/main/scala/org/apache/spark/sql/catalyst/analysis/FunctionRegistry.scala#L74)
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