Github user hequn8128 commented on a diff in the pull request: https://github.com/apache/flink/pull/6188#discussion_r197614210 --- 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() --- End diff -- 1. "var unitValue=" => "var unitValue =" 2. indent with two spaces instead of four and same for other lines
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