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https://issues.apache.org/jira/browse/FLINK-11230?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=16732986#comment-16732986
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Hequn Cheng commented on FLINK-11230:
-------------------------------------
[~jiweiautohome] The bottom aggregate after window will still output values
bigger than what you expected even for a single stream.
If you want to get early fired results, you can use non-window aggregate. For
example, you can write sql as follows:
{code:java}
SELECT minuteTime, count(*) AS pv
FROM (
SELECT getMinute(stime) as minuteTime
FROM flink_test1
UNION ALL
SELECT getMinute(stime) as minuteTime
FROM flink_test2
) t
GROUP BY minuteTime
{code}
> Sum of FlinkSql after two table union all.The value is too large.
> -----------------------------------------------------------------
>
> Key: FLINK-11230
> URL: https://issues.apache.org/jira/browse/FLINK-11230
> Project: Flink
> Issue Type: Bug
> Components: Table API & SQL
> Affects Versions: 1.7.0
> Reporter: jiwei
> Priority: Blocker
> Labels: test
> Attachments: image-2019-01-02-14-18-33-890.png,
> image-2019-01-02-14-18-43-710.png, screenshot-1.png
>
>
> SELECT k AS KEY, SUM(p) AS pv
> FROM (
> SELECT tumble_start(stime, INTERVAL '1' minute) AS k
> , COUNT(*) AS p
> FROM flink_test1
> GROUP BY tumble(stime, INTERVAL '1' minute)
> UNION ALL
> SELECT tumble_start(stime, INTERVAL '1' minute) AS k
> , COUNT(*) AS p
> FROM flink_test2
> GROUP BY tumble(stime, INTERVAL '1' minute)
> ) t
> GROUP BY k
> The Result of executing this sql is about 7000 per minute and keeping
> increasing.But the result is 60 per minute for per table.Is there an error in
> my SQL statement?
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