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https://issues.apache.org/jira/browse/FLINK-9432?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=16627307#comment-16627307
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ASF GitHub Bot commented on FLINK-9432:
---------------------------------------
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
##########
File path:
flink-libraries/flink-table/src/main/java/org/apache/calcite/avatica/util/DateTimeUtils.java
##########
@@ -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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> Support extract epoch, decade, millisecond, microsecond
> -------------------------------------------------------
>
> Key: FLINK-9432
> URL: https://issues.apache.org/jira/browse/FLINK-9432
> Project: Flink
> Issue Type: New Feature
> Reporter: Sergey Nuyanzin
> Assignee: Sergey Nuyanzin
> Priority: Major
> Labels: pull-request-available
>
> The task is to separate activity from depending on
> https://issues.apache.org/jira/browse/CALCITE-2303 from all others that could
> be done without upgrade avatica/calcite in
> https://issues.apache.org/jira/browse/FLINK-8518
> Now the implementations of next functions are blocked
> {code:sql}
> extract(decade from ...)
> extract(epoch from ...)
> extract(millisecond from ...)
> extract(microsecond from ...)
> extract(isodow from ...)
> extract(isoyear from ...)
> {code}
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