flink sql 实现双流join 的滑动窗口

Thu, 02 Apr 2020 01:31:39 -0700 

HI ALL：
    打扰大家了。请教下如何实现双流join的滑动窗口。我的代码运行后就报错了。有经验的同学帮忙解答下。谢谢。

代码：
SELECT
TUMBLE_START(a.ts, INTERVAL '10' MINUTE),
TUMBLE_END(a.ts, INTERVAL '10' MINUTE),
sum( CASE WHEN f.business_id <> NULL THEN 1 ELSE 0 END ) AS 
company_pass_first_num,
sum( CASE WHEN g.business_id <> NULL THEN 1 ELSE 0 END ) AS company_pass_num,
COUNT(a.create_time)
FROM t1_oa_loan_requests_detail_view a
  LEFT JOIN t1_oa_flow_inst_task_view_segment_no_5 f ON a.id = f.business_id
  LEFT JOIN t1_oa_flow_inst_task_view_segment_no_61 g ON a.id = g.business_id 
GROUP BY TUMBLE(a.ts, INTERVAL '10' MINUTE);

报错：

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