twalthr commented on a change in pull request #11280: [FLINK-16377][table]
Support inline user defined functions in expression dsl
URL: https://github.com/apache/flink/pull/11280#discussion_r397280834
##########
File path:
flink-table/flink-table-planner-blink/src/main/scala/org/apache/flink/table/planner/codegen/CorrelateCodeGenerator.scala
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@@ -65,9 +68,11 @@ object CorrelateCodeGenerator {
// according to the SQL standard, every scalar function should also be a
table function
// but we don't allow that for now
- if (!rexCall.getOperator.isInstanceOf[BridgingSqlFunction] &&
- !rexCall.getOperator.isInstanceOf[TableSqlFunction]) {
- throw new ValidationException("Currently, only table functions can emit
rows.")
+ rexCall.getOperator match {
+ case func: BridgingSqlFunction if func.getDefinition.getKind ==
FunctionKind.TABLE => //ok
Review comment:
nit: whitespace
could be moved into a hotfix commit and merged immediately
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