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https://issues.apache.org/jira/browse/FLINK-6846?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=16521193#comment-16521193
]
ASF GitHub Bot commented on FLINK-6846:
---------------------------------------
Github user hequn8128 commented on a diff in the pull request:
https://github.com/apache/flink/pull/6188#discussion_r197614217
--- Diff:
flink-libraries/flink-table/src/main/scala/org/apache/flink/table/expressions/time.scala
---
@@ -328,6 +330,42 @@ case class TemporalOverlaps(
}
}
+ /**
+ * Standard conversion of the TIMESTAMPADD operator.
+ * Source:
[[org.apache.calcite.sql2rel.StandardConvertletTable#TimestampAddConvertlet]]
+ */
+case class TimestampAdd(
+ unit: Expression,
+ count: Expression,
+ timestamp: Expression)
+ extends Expression {
+
+ override private[flink] def children = unit :: count :: timestamp :: Nil
+
+ override private[flink] def toRexNode(implicit relBuilder: RelBuilder) =
{
+ var timeUnit : Option[TimeUnit] = None
+ if (unit.isInstanceOf[Literal]) {
+ var unitValue= unit.asInstanceOf[Literal].value.toString()
+ val sqlTsiArray = Array("SQL_TSI_YEAR", "SQL_TSI_QUARTER",
"SQL_TSI_MONTH", "SQL_TSI_WEEK",
+ "SQL_TSI_DAY", "SQL_TSI_HOUR", "SQL_TSI_MINUTE",
"SQL_TSI_SECOND")
+ if (sqlTsiArray.contains(unitValue)) {
+ unitValue = unitValue.split("_").last
+ }
+ timeUnit = Some(TimeUnit.valueOf(unitValue))
+ }
+
+ relBuilder.call(SqlStdOperatorTable.DATETIME_PLUS, timestamp.toRexNode,
+ relBuilder.call(SqlStdOperatorTable.MULTIPLY,
+
relBuilder.getRexBuilder.makeIntervalLiteral(timeUnit.get.multiplier,
+ new
SqlIntervalQualifier(timeUnit.get,null,SqlParserPos.ZERO)),
--- End diff --
(timeUnit.get,null,SqlParserPos.ZERO) => (timeUnit.get, null,
SqlParserPos.ZERO)
add a space after the comma
> 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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