lipzhu commented on a change in pull request #24472: [SPARK-27578][SQL] Support
INTERVAL ... HOUR TO SECOND syntax
URL: https://github.com/apache/spark/pull/24472#discussion_r289704634
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File path:
sql/catalyst/src/main/scala/org/apache/spark/sql/catalyst/parser/AstBuilder.scala
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@@ -1770,7 +1770,7 @@ class AstBuilder(conf: SQLConf) extends
SqlBaseBaseVisitor[AnyRef] with Logging
* Create a [[CalendarInterval]] for a unit value pair. Two unit
configuration types are
* supported:
* - Single unit.
- * - From-To unit (only 'YEAR TO MONTH' and 'DAY TO SECOND' are supported).
+ * - From-To unit (only 'YEAR TO MONTH' and 'DAY TO SECOND' and 'HOUR to
SECOND' are supported).
Review comment:
This is because `INTERVAL ... HOUR to SECOND` are most used in our existing
scripts. If needed, maybe other cases like `INTERVAL .. X to X` can be
contributed.
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