beyond1920 commented on a change in pull request #16215:
URL: https://github.com/apache/flink/pull/16215#discussion_r661091381
##########
File path:
flink-table/flink-table-planner-blink/src/test/scala/org/apache/flink/table/planner/runtime/stream/sql/WindowAggregateITCase.scala
##########
@@ -206,6 +206,98 @@ class WindowAggregateITCase(
assertEquals(expected.sorted.mkString("\n"),
sink.getAppendResults.sorted.mkString("\n"))
}
+ @Test
+ def testEventTimeTumbleWindowWithOffset(): Unit = {
+ val sql =
+ """
+ |SELECT
+ | `name`,
+ | window_start,
+ | window_end,
+ | COUNT(*),
+ | SUM(`bigdec`),
+ | MAX(`double`),
+ | MIN(`float`),
+ | COUNT(DISTINCT `string`),
+ | concat_distinct_agg(`string`)
+ |FROM TABLE(
+ | TUMBLE(TABLE T1, DESCRIPTOR(rowtime), INTERVAL '1' DAY, INTERVAL
'8' HOUR))
+ |GROUP BY `name`, window_start, window_end
+ """.stripMargin
+
+ val sink = new TestingAppendSink
+ tEnv.sqlQuery(sql).toAppendStream[Row].addSink(sink)
+ env.execute()
+
+ val expected = Seq(
+
"a,2020-10-09T08:00,2020-10-10T08:00,6,19.98,5.0,1.0,3,Hi|Comment#1|Comment#2",
Review comment:
Timestamp of all records with `name` = 'a' are [2020-10-10T00:00:01,
2020-10-10T00:00:02, 2020-10-10T00:00:03, 2020-10-10T00:00:04,
2020-10-10T00:00:08, 2020-10-10T00:00:04] .
In this case, offset is 8 hour means window region at [08:00:00, T+1
08:00:00) instead of [00:00:00, 24:00:00) at each day. Based on this rule,
above records with `name` = 'a' all belongs to [2020-10-09 08:00:00,2020-10-10
08:00:00), right?
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