Github user mgaido91 commented on a diff in the pull request:
https://github.com/apache/spark/pull/21363#discussion_r189526889
--- Diff:
sql/core/src/main/scala/org/apache/spark/sql/execution/datasources/csv/CSVInferSchema.scala
---
@@ -90,6 +90,7 @@ private[csv] object CSVInferSchema {
// DecimalTypes have different precisions and scales, so we try
to find the common type.
findTightestCommonType(typeSoFar, tryParseDecimal(field,
options)).getOrElse(StringType)
case DoubleType => tryParseDouble(field, options)
+ case DateType => tryParseDate(field, options)
--- End diff --
this also is a behavior change. Shall we document it?
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