答复: 为何会报"Window can only be defined over a time attribute column."??

2019-06-20 文章 Chennet Steven
貌似问题变成这样子 程序流程如下:WM=watermark source(没有WM)-->转换A-->TableA(没有WM)--->转换B--->TableB(没有WM)>转换C(sql TUMBLE)-->TableC-->Sink 为了让转换C的Sql能够成功执行,如何在TableB上Assign一个Watermark?? From stevenchen webchat 38798579 发件人: Chennet Steven 发送时间: Friday, June 21, 2019 1

为何会报"Window can only be defined over a time attribute column."??

2019-06-20 文章 Chennet Steven
Flink 1.4.2 执行Sql SELECT Tag, SUM(PowerX) FROM TimeTable GROUP BY TUMBLE(UptMs, INTERVAL '1' HOUR),Tag 会报异常,但是感觉UptMs列类型是TimeStamp啊? Exception in thread "main" org.apache.flink.table.api.ValidationException: Window can only be defined over a time attribute column. at org.apache.flink.