Github user fhueske commented on a diff in the pull request:
https://github.com/apache/flink/pull/3743#discussion_r112455555
--- Diff:
flink-libraries/flink-table/src/main/scala/org/apache/flink/table/api/table.scala
---
@@ -810,6 +810,47 @@ class Table(
new WindowedTable(this, window)
}
+ /**
--- End diff --
Extend docs to
```
/**
* Defines over-windows on the records of a table.
*
* An over-window defines for each record an interval of records over
which aggregation
* functions can be computed.
*
* Example:
*
* {{{
* table
* .window(Over partitionBy 'c orderBy 'rowTime preceding 10.seconds
as 'ow)
* .select('c, 'b.count over 'ow, 'e.sum over 'ow)
* }}}
*
* __Note__: Computing over window aggregates on a streaming table is
only a parallel operation
* if the window is partititioned. Otherwise, the whole stream will be
processed by a single
* task, i.e., with parallelism 1.
*
* __Note__: Over-windows for batch tables are currently not supported.
*
* @param overWindows windows that specify the record interval over
which aggregations are
* computed.
* @return An OverWindowedTable to specify the aggregations.
*/
```
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