xuyangzhong commented on code in PR #18375:
URL: https://github.com/apache/flink/pull/18375#discussion_r1433633656
##########
flink-table/flink-table-planner/src/test/scala/org/apache/flink/table/planner/runtime/stream/sql/AggregateITCase.scala:
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@@ -1331,6 +1331,81 @@ class AggregateITCase(aggMode: AggMode, miniBatch:
MiniBatchMode, backend: State
assertThat(sink.getRetractResults.sorted).isEqualTo(expected.sorted)
}
+ @TestTemplate
+ def testMinMaxWithChar(): Unit = {
+ val data =
+ List(
+ rowOf(1, "a"),
+ rowOf(1, "b"),
+ rowOf(2, "d"),
+ rowOf(2, "c")
+ )
+ val dataId = TestValuesTableFactory.registerData(data)
+ tEnv.executeSql(s"""
+ |CREATE TABLE src(
+ | `id` INT,
+ | `char` CHAR(1)
+ |) WITH (
+ | 'connector' = 'values',
+ | 'data-id' = '$dataId'
+ |)
+ |""".stripMargin)
+
+ val sql =
+ """
+ |select `id`, count(*), min(`char`), max(`char`) from src group by `id`
+ """.stripMargin
+
+ val sink = new TestingRetractSink()
+ tEnv.sqlQuery(sql).toRetractStream[Row].addSink(sink)
+ env.execute()
+
+ val expected = List("1,2,a,b", "2,2,c,d")
+ assertThat(sink.getRetractResults.sorted).isEqualTo(expected.sorted)
+ }
+
+ @TestTemplate
+ def testRetractMinMaxWithChar(): Unit = {
+ val data =
+ List(
+ changelogRow("+I", Int.box(1), "a"),
+ changelogRow("+I", Int.box(1), "b"),
+ changelogRow("+I", Int.box(1), "c"),
+ changelogRow("-D", Int.box(1), "c"),
+ changelogRow("-D", Int.box(1), "a"),
+ changelogRow("+I", Int.box(2), "a"),
+ changelogRow("+I", Int.box(2), "b"),
+ changelogRow("+I", Int.box(2), "c"),
+ changelogRow("-U", Int.box(2), "b"),
+ changelogRow("+U", Int.box(2), "d"),
+ changelogRow("-U", Int.box(2), "a"),
+ changelogRow("+U", Int.box(2), "b")
+ )
+ val dataId = TestValuesTableFactory.registerData(data)
+ tEnv.executeSql(s"""
+ |CREATE TABLE src(
+ | `id` INT,
+ | `char` CHAR(1)
+ |) WITH (
+ | 'connector' = 'values',
Review Comment:
I have updated the test to add a new field with type "char(2)", and test it
with data that actually has a length of 1 or 2.
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