Github user twalthr commented on a diff in the pull request:
https://github.com/apache/flink/pull/4532#discussion_r132971979
--- Diff:
flink-libraries/flink-table/src/main/scala/org/apache/flink/table/api/StreamTableEnvironment.scala
---
@@ -667,30 +719,62 @@ abstract class StreamTableEnvironment(
// get CRow plan
val plan: DataStream[CRow] = translateToCRow(logicalPlan, queryConfig)
+ val rowtimeFields = logicalType
+ .getFieldList.asScala
+ .filter(f => FlinkTypeFactory.isRowtimeIndicatorType(f.getType))
+
+ // convert the input type for the conversion mapper
+ // the input will be changed in the OutputRowtimeProcessFunction later
+ val convType = if (rowtimeFields.size > 1) {
+ throw new TableException(
--- End diff --
@fhueske With left most table I mean the first time indicator in the select
statement (from left). I think even join reordering does not change the column
ordering. I agree that at least `TableSink`s should do deal with it implicitly.
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