Github user hvanhovell commented on a diff in the pull request:
https://github.com/apache/spark/pull/13930#discussion_r68650946
--- Diff:
sql/catalyst/src/main/scala/org/apache/spark/sql/catalyst/analysis/Analyzer.scala
---
@@ -881,7 +881,16 @@ class Analyzer(
}
case u @ UnresolvedFunction(funcId, children, isDistinct) =>
withPosition(u) {
- catalog.lookupFunction(funcId, children) match {
+ val func = try {
+ catalog.lookupFunction(funcId, children)
+ } catch {
+ // SPARK-16228 ExternalCatalog may recognize `double`-type
only.
+ case _: Exception =>
+ val newChildren = children.map(x =>
--- End diff --
I am not sure. That seems like a good place though.
I am also curious why we use the function arguments (and not just the
names) to resolve the function; this kinda robs us from the opportunity to cast
the arguments.
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