Github user fhueske commented on a diff in the pull request:
https://github.com/apache/flink/pull/3808#discussion_r114783322
--- Diff:
flink-libraries/flink-table/src/main/scala/org/apache/flink/table/api/TableEnvironment.scala
---
@@ -774,6 +798,42 @@ abstract class TableEnvironment(val config:
TableConfig) {
Some(mapFunction)
}
+ /**
+ * Checks for at most one rowtime and proctime attribute.
+ * Returns the time attributes.
+ *
+ * @return rowtime attribute and proctime attribute
+ */
+ protected def validateAndExtractTimeAttributes(
--- End diff --
Can be moved to `StreamTableEnvironment` if we do not allow
`TimeAttribute`s in batch environments.
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