leonardBang commented on a change in pull request #15133:
URL: https://github.com/apache/flink/pull/15133#discussion_r598846593
##########
File path:
flink-table/flink-table-planner-blink/src/test/scala/org/apache/flink/table/planner/expressions/TemporalTypesTest.scala
##########
@@ -1370,6 +1371,124 @@ class TemporalTypesTest extends ExpressionTestBase {
testSqlApi(
"TIMESTAMPDIFF(MONTH, DATE '2019-09-01', DATE '2016-08-01')",
"-37")
+ testSqlApi(
+ "TIMESTAMPDIFF(MONTH, TIMESTAMP '2021-01-04 00:00:00', DATE
'2021-02-04')",
+ "1")
+ testSqlApi(
+ "TIMESTAMPDIFF(MONTH, DATE '2020-01-04', TIMESTAMP '2021-02-04
12:00:00')",
+ "13")
+ testSqlApi(
+ "TIMESTAMPDIFF(MONTH, TIMESTAMP '2021-01-04 00:00:00', TIME '00:00:00')",
+ "-612")
+ testSqlApi(
+ "TIMESTAMPDIFF(MONTH, TIME '00:00:00', TIMESTAMP '2021-02-04 12:00:00')",
+ "613")
+ testSqlApi(
+ "TIMESTAMPDIFF(MONTH, DATE '2021-01-04', TIME '00:00:00')",
+ "-612")
+ testSqlApi(
+ "TIMESTAMPDIFF(MONTH, TIME '00:00:00', DATE '2021-02-04')",
+ "613")
+ }
+
+ @Test
+ def testTimestampLtzArithmetic(): Unit = {
+ // TIMESTAMP_LTZ +/- INTERVAL should support nanosecond
+ testSqlApi(
+ s"${timestampTz("1970-02-01 00:00:00.123456789")} + INTERVAL '1' YEAR",
+ "1971-02-01 00:00:00.123456789")
+
+ testSqlApi(
+ s"${timestampTz("1970-02-01 00:00:00.123456789")} - INTERVAL '1' MONTH",
+ "1970-01-01 00:00:00.123456789")
+
+ testSqlApi(
+ s"${timestampTz("1970-02-01 00:00:00.123456789")} + INTERVAL '1' DAY",
+ "1970-02-02 00:00:00.123456789")
+
+ testSqlApi(
+ s"${timestampTz("1970-02-01 00:00:00.123456789")} - INTERVAL '1' HOUR",
+ "1970-01-31 23:00:00.123456789")
+
+ testSqlApi(
+ s"${timestampTz("1970-02-01 00:00:00.123456789")} + INTERVAL '1' MINUTE",
+ "1970-02-01 00:01:00.123456789")
+
+ testSqlApi(
+ s"${timestampTz("1970-02-01 00:00:00.123456789")} - INTERVAL '1' SECOND",
+ "1970-01-31 23:59:59.123456789")
+
+ // test TIMESTAMPDIFF for TIMESTAMP_LTZ type
+ testSqlApi(
+ s"TIMESTAMPDIFF(YEAR, ${timestampTz("1970-01-01 00:00:00.123456789")}," +
+ s" ${timestampTz("1971-01-02 01:02:03.123456789")})",
+ "1")
+
+ testSqlApi(
+ s"TIMESTAMPDIFF(MONTH, ${timestampTz("1970-01-01 00:00:00.123456789")},"
+
+ s" ${timestampTz("1971-01-02 01:02:03.123456789")})",
+ "12")
+
+ testSqlApi(
+ s"TIMESTAMPDIFF(DAY, ${timestampTz("1970-01-01 00:00:00.123")}," +
+ s" ${timestampTz("1971-01-02 01:02:03.123")})",
+ "366")
+
+ testSqlApi(
+ s"TIMESTAMPDIFF(HOUR, ${timestampTz("1970-01-01 00:00:00.123")}," +
+ s" ${timestampTz("1970-01-01 01:02:03.123")})",
+ "1")
+
+ testSqlApi(
+ s"TIMESTAMPDIFF(MINUTE, ${timestampTz("1970-01-01 01:02:03.123")}," +
+ s" ${timestampTz("1970-01-01 00:00:00")})",
+ "-62")
Review comment:
no, you can look `TIMESTAMPDIFF(MINUTE , TIMESTAMP, TIMESTAMP)`
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