[GitHub] [flink] XuQianJin-Stars commented on a change in pull request #8746: [hotfix][FLINK-11120][table]fix the bug of timestampadd handles time

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XuQianJin-Stars commented on a change in pull request #8746: [hotfix][FLINK-11120][table]fix the bug of timestampadd handles time
URL: https://github.com/apache/flink/pull/8746#discussion_r321956571
 
 

 ##########
 File path: flink-table/flink-table-planner-blink/src/test/scala/org/apache/flink/table/planner/expressions/ScalarFunctionsTest.scala
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 @@ -3572,6 +3572,26 @@ class ScalarFunctionsTest extends ScalarTypesTestBase {
       "'2016-03-31'.toDate - 1.week",
       "timestampadd(WEEK, -1, date '2016-03-31')",
       "2016-03-24")
+
+    // TIMESTAMPADD with time; returns a time value.The interval is positive.
+    testSqlApi("TIMESTAMPADD(SECOND, 1, time '23:59:59')", "00:00:00")
+    testSqlApi("TIMESTAMPADD(MINUTE, 1, time '00:00:00')", "00:01:00")
+    testSqlApi("TIMESTAMPADD(MINUTE, 1, time '23:59:59')", "00:00:59")
+    testSqlApi("TIMESTAMPADD(HOUR, 1, time '23:59:59')", "00:59:59")
+    testSqlApi("TIMESTAMPADD(DAY, 15, time '23:59:59')", "23:59:59")
+    testSqlApi("TIMESTAMPADD(WEEK, 3, time '23:59:59')", "23:59:59")
+    testSqlApi("TIMESTAMPADD(MONTH, 6, time '23:59:59')", "23:59:59")
+    testSqlApi("TIMESTAMPADD(QUARTER, 1, time '23:59:59')", "23:59:59")
+    testSqlApi("TIMESTAMPADD(YEAR, 10, time '23:59:59')", "23:59:59")
+    // TIMESTAMPADD with time; returns a time value .The interval is negative.
+    testSqlApi("TIMESTAMPADD(SECOND, -1, time '00:00:00')", "23:59:59")
 
 Review comment:
   well, I will verify it later, thank you very much.

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