Github user ouyangxiaochen commented on a diff in the pull request:
https://github.com/apache/spark/pull/17681#discussion_r125575412
--- Diff:
sql/core/src/main/scala/org/apache/spark/sql/execution/command/functions.scala
---
@@ -46,26 +46,47 @@ case class CreateFunctionCommand(
functionName: String,
className: String,
resources: Seq[FunctionResource],
- isTemp: Boolean)
+ isTemp: Boolean,
+ ifNotExists: Boolean,
+ replace: Boolean)
extends RunnableCommand {
+ if (ifNotExists && replace) {
+ throw new AnalysisException("CREATE FUNCTION with both IF NOT EXISTS
and REPLACE" +
+ " is not allowed.")
+ }
+
+ // Disallows 'CREATE TEMPORARY FUNCTION IF NOT EXISTS' to be consistent
+ // with 'CREATE TEMPORARY FUNCTION'
--- End diff --
OK. Thanks!
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