cloud-fan commented on a change in pull request #32266:
URL: https://github.com/apache/spark/pull/32266#discussion_r622206277
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File path:
sql/catalyst/src/main/scala/org/apache/spark/sql/catalyst/util/IntervalUtils.scala
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@@ -92,6 +92,36 @@ object IntervalUtils {
}
private val yearMonthPattern = "^([+|-])?(\\d+)-(\\d+)$".r
+ private val yearMonthStringPattern =
+ "(INTERVAL )?([+|-])*?(')?([+|-])?(\\d+)-(\\d+)(')?( YEAR TO MONTH)?".r
Review comment:
Maybe we can match by `yearMonthPattern` first, and fall back to this
regex later. Then this regex doesn't need to have so many optional parts.
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