[
https://issues.apache.org/jira/browse/FLINK-19079?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
]
Leonard Xu updated FLINK-19079:
-------------------------------
Description:
To convert a insert-only table to versioned table, the recommended way is use
deduplicate query as following, the converted *versioned_view* owns primary key
and event time and thus can be a versioned table.
{code:java}
CREATE VIEW versioned_rates AS
SELECT currency, rate, currency_time
FROM (
SELECT *,
ROW_NUMBER() OVER (PARTITION BY currency -- inferred primary key
ORDER BY currency_time -- the event time
DESC) AS rowNum
FROM rates)
WHERE rowNum = 1;
{code}
But currently deduplicate operator only support on process time, this issue
aims to support deduplicate on Event time.
> Support row time deduplicate operator
> -------------------------------------
>
> Key: FLINK-19079
> URL: https://issues.apache.org/jira/browse/FLINK-19079
> Project: Flink
> Issue Type: Sub-task
> Reporter: Leonard Xu
> Priority: Major
>
> To convert a insert-only table to versioned table, the recommended way is use
> deduplicate query as following, the converted *versioned_view* owns primary
> key and event time and thus can be a versioned table.
> {code:java}
> CREATE VIEW versioned_rates AS
> SELECT currency, rate, currency_time
> FROM (
> SELECT *,
> ROW_NUMBER() OVER (PARTITION BY currency -- inferred primary key
> ORDER BY currency_time -- the event time
> DESC) AS rowNum
> FROM rates)
> WHERE rowNum = 1;
> {code}
> But currently deduplicate operator only support on process time, this issue
> aims to support deduplicate on Event time.
>
--
This message was sent by Atlassian Jira
(v8.3.4#803005)
