Github user bomeng commented on a diff in the pull request:
https://github.com/apache/spark/pull/12104#discussion_r58419381
--- Diff:
sql/catalyst/src/main/scala/org/apache/spark/sql/catalyst/catalog/InMemoryCatalog.scala
---
@@ -48,7 +48,7 @@ class InMemoryCatalog extends ExternalCatalog {
private val catalog = new scala.collection.mutable.HashMap[String,
DatabaseDesc]
private def filterPattern(names: Seq[String], pattern: String):
Seq[String] = {
- val regex = pattern.replaceAll("\\*", ".*").r
+ val regex = pattern.replaceAll("\\.\\*", "\\*").replaceAll("\\*",
"\\.\\*").r
--- End diff --
@andrewor14 If you want to include my changes in your PR, that is fine. I
did not see your changes for that though.
@yhuai I think we need to have consistent behavior as Hive does. Hive
supports query like "list functions like '\*f\*' " or "list functions like
'f.\*' ", for the first case, our current implementation will cause exception
and return empty.
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