cloud-fan commented on a change in pull request #26712: [SPARK-29883][SQL]
Improve error messages when function name is an alias
URL: https://github.com/apache/spark/pull/26712#discussion_r353040270
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File path:
sql/catalyst/src/main/scala/org/apache/spark/sql/catalyst/analysis/FunctionRegistry.scala
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@@ -600,7 +600,8 @@ object FunctionRegistry {
} else {
// Otherwise, find a constructor method that matches the number of
arguments, and use that.
val params = Seq.fill(expressions.size)(classOf[Expression])
- val f = constructors.find(_.getParameterTypes.toSeq ==
params).getOrElse {
+ val f = constructors.find(e => e.getParameterTypes.toSeq == params
+ || e.getParameterTypes.head == classOf[String]).getOrElse {
Review comment:
then we don't even need the `MultiNamedExpression` trait. We just need to
register `bool_and`, `bool_or` with `expressionWithAlias`
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