sunjincheng created FLINK-11220:
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Summary: Can not Select row time field in JOIN query
Key: FLINK-11220
URL:
https://issues.apache.org/jira/browse/FLINK-11220 Project: Flink
Issue Type: Bug
Components: Table API & SQL
Affects Versions: 1.8.0
Reporter: sunjincheng
SQL:
{code:java}
Orders...toTable(tEnv, 'orderId, 'orderTime.rowtime)
Payment...toTable(tEnv, 'orderId, 'payTime.rowtime)
SELECT orderTime, o.orderId, payTime
FROM Orders AS o JOIN Payment AS p
ON o.orderId = p.orderId AND
p.payTime BETWEEN orderTime AND orderTime + INTERVAL '1' HOUR
{code}
Execption:
{code:java}
org.apache.flink.table.api.TableException: Found more than one rowtime field: [orderTime, payTime] in the table that should be converted to a DataStream.
Please select the rowtime field that should be used as event-time timestamp for the DataStream by casting all other fields to TIMESTAMP.
at org.apache.flink.table.api.StreamTableEnvironment.translate(StreamTableEnvironment.scala:906)
{code}
The reason for the error is that we have 2 time fields `orderTime` and `payTime`. I think we do not need throw the exception, and we can remove the logic of `plan.process(new OutputRowtimeProcessFunction[A](conversion, rowtimeFields.head.getIndex))`, if we want using the timestamp after toDataSteram, we should using `assignTimestampsAndWatermarks()`.
What do you think ? [~twalthr] [~fhueske]
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