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https://issues.apache.org/jira/browse/FLINK-21922?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
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Dian Fu updated FLINK-21922:
----------------------------
Summary: The method partition_by in Over doesn't work for expression dsl
(was: The method partition_by in Over doesn't work)
> The method partition_by in Over doesn't work for expression dsl
> ---------------------------------------------------------------
>
> Key: FLINK-21922
> URL: https://issues.apache.org/jira/browse/FLINK-21922
> Project: Flink
> Issue Type: Bug
> Components: API / Python
> Affects Versions: 1.12.0
> Reporter: Dian Fu
> Assignee: Dian Fu
> Priority: Major
> Labels: pull-request-available
> Fix For: 1.13.0, 1.12.3
>
>
> For the following example:
> {code}
> t = t_env.from_elements([(1, 1, "Hello")], ['a', 'b', 'c'])
> result = t.over_window(
> Over.partition_by(t.c)
> .order_by("a")
> .preceding(expr.row_interval(2))
> .following(expr.CURRENT_ROW)
> .alias("w"))
> {code}
> It will throw the following exception:
> {code}
> org.apache.flink.api.python.shaded.py4j.Py4JException: Method
> partitionBy([class org.apache.flink.table.api.ApiExpression]) does not
> existorg.apache.flink.api.python.shaded.py4j.Py4JException: Method
> partitionBy([class org.apache.flink.table.api.ApiExpression]) does not exist
> at
> org.apache.flink.api.python.shaded.py4j.reflection.ReflectionEngine.getMethod(ReflectionEngine.java:318)
> at
> org.apache.flink.api.python.shaded.py4j.reflection.ReflectionEngine.getMethod(ReflectionEngine.java:339)
> at org.apache.flink.api.python.shaded.py4j.Gateway.invoke(Gateway.java:276)
> at
> org.apache.flink.api.python.shaded.py4j.commands.AbstractCommand.invokeMethod(AbstractCommand.java:132)
> at
> org.apache.flink.api.python.shaded.py4j.commands.CallCommand.execute(CallCommand.java:79)
> at
> org.apache.flink.api.python.shaded.py4j.GatewayConnection.run(GatewayConnection.java:238)
> at java.lang.Thread.run(Thread.java:748)
> {code}
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