pnowojski commented on a change in pull request #6614: [FLINK-9432] [table]
Support extract timeunit: DECADE, EPOCH, ISODOW, ISOYEAR…
URL: https://github.com/apache/flink/pull/6614#discussion_r220160479
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File path:
flink-libraries/flink-table/src/main/java/org/apache/calcite/avatica/util/DateTimeUtils.java
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@@ -751,15 +770,15 @@ private static int julianExtract(TimeUnitRange range,
int julian) {
return day;
case DOW:
return (int) floorMod(julian + 1, 7) + 1; //
sun=1, sat=7
+ case ISODOW:
+ return (int) floorMod(julian, 7) + 1; // mon=1,
sun=7
case WEEK:
- long fmofw = firstMondayOfFirstWeek(year);
- if (julian < fmofw) {
- fmofw = firstMondayOfFirstWeek(year -
1);
- }
- return (int) (julian - fmofw) / 7 + 1;
+ return getIso8601WeekNumber(julian, year,
month, day);
case DOY:
final long janFirst = ymdToJulian(year, 1, 1);
return (int) (julian - janFirst) + 1;
+ case DECADE:
+ return year / 10;
case CENTURY:
return year > 0
? (year + 99) / 100
Review comment:
Why `default` throws `AssertionError`? Shouldn't it be `ValidationException`
or `UnsupportedOperationException`? If it should never happen then it should be
`IllegalStateException`.
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