org.apache.flink.table.api.ValidationException: SQL validation failed. Temporal table join currently only supports 'FOR SYSTEM_TIME AS OF' left table's time attribute field
at org.apache.flink.table.sqlserver.utils.FormatValidatorExceptionUtils.newValidationException(FormatValidatorExceptionUtils.java:41)
at org.apache.flink.table.sqlserver.utils.ErrorConverter.formatException(ErrorConverter.java:123)
at org.apache.flink.table.sqlserver.utils.ErrorConverter.toErrorDetail(ErrorConverter.java:60)
at org.apache.flink.table.sqlserver.utils.ErrorConverter.toGrpcException(ErrorConverter.java:54)
at org.apache.flink.table.sqlserver.FlinkSqlServiceImpl.validateAndGeneratePlan(FlinkSqlServiceImpl.java:1077)
at org.apache.flink.table.sqlserver.proto.FlinkSqlServiceGrpc$MethodHandlers.invoke(FlinkSqlServiceGrpc.java:3692)
at io.grpc.stub.ServerCalls$UnaryServerCallHandler$UnaryServerCallListener.onHalfClose(ServerCalls.java:172)
at io.grpc.internal.ServerCallImpl$ServerStreamListenerImpl.halfClosed(ServerCallImpl.java:331)
at io.grpc.internal.ServerImpl$JumpToApplicationThreadServerStreamListener$1HalfClosed.runInContext(ServerImpl.java:820)
at io.grpc.internal.ContextRunnable.run(ContextRunnable.java:37)
at io.grpc.internal.SerializingExecutor.run(SerializingExecutor.java:123)
at java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1147)
at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:622)
at java.lang.Thread.run(Thread.java:834)