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https://issues.apache.org/jira/browse/FLINK-6846?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=16527093#comment-16527093
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ASF GitHub Bot commented on FLINK-6846:
---------------------------------------
Github user xueyumusic commented on a diff in the pull request:
https://github.com/apache/flink/pull/6188#discussion_r199040249
--- Diff:
flink-libraries/flink-table/src/main/scala/org/apache/flink/table/api/scala/expressionDsl.scala
---
@@ -1029,6 +1029,29 @@ object temporalOverlaps {
TemporalOverlaps(leftTimePoint, leftTemporal, rightTimePoint,
rightTemporal)
}
}
+/**
+ * Adds a (signed) integer interval to a timestamp. The unit for the
interval is given
+ * by the unit argument, which should be one of the following values:
"SECOND", "MINUTE",
+ * "HOUR", "DAY", "WEEK", "MONTH", "QUARTER" or "YEAR".
+ *
+ * e.g. timestampAdd("WEEK", 1, '2003-01-02'.toDate) leads to
"2003-01-09".
+ */
+object timestampAdd {
+
+ /**
+ * Adds a (signed) integer interval to a timestamp. The unit for the
interval is given
+ * by the unit argument, which should be one of the following values:
"SECOND", "MINUTE",
+ * "HOUR", "DAY", "WEEK", "MONTH", "QUARTER" or "YEAR".
+ *
+ * e.g. timestampAdd("WEEK", 1, '2003-01-02'.toDate) leads to
"2003-01-09".
+ */
+ def apply(
+ unit: Expression,
--- End diff --
thanks for your review and advice, @fhueske , yes, At the beginning I had
thought these two kinds of function signature, and chose the current one
following the sql signature. I think your suggestions is reasonable, it follows
the table api style and makes the code concise.
There are two problems that I found are: one is that `1.quarter` has been
realized in other meaning (Quarter table api) and another is `1.week` seems to
be not existed right now (maybe we can add).Thank you
> Add TIMESTAMPADD supported in TableAPI
> --------------------------------------
>
> Key: FLINK-6846
> URL: https://issues.apache.org/jira/browse/FLINK-6846
> Project: Flink
> Issue Type: Sub-task
> Components: Table API & SQL
> Affects Versions: 1.4.0
> Reporter: sunjincheng
> Assignee: sunjincheng
> Priority: Major
> Labels: pull-request-available, starter
>
> See FLINK-6811 for detail.
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