Github user jiangxb1987 commented on a diff in the pull request: https://github.com/apache/spark/pull/20433#discussion_r165233944 --- Diff: sql/catalyst/src/test/scala/org/apache/spark/sql/catalyst/parser/ExpressionParserSuite.scala --- @@ -561,8 +561,11 @@ class ExpressionParserSuite extends PlanTest { Literal(CalendarInterval.fromSingleUnitString(u, s)) } - // Empty interval statement - intercept("interval", "at least one time unit should be given for interval literal") --- End diff -- we shall still check the empty interval statement, now it shall produce a different error message?
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