Github user rxin commented on a diff in the pull request:
https://github.com/apache/spark/pull/5818#discussion_r29470257
--- Diff: sql/core/src/main/scala/org/apache/spark/sql/DataFrame.scala ---
@@ -852,6 +852,24 @@ class DataFrame private[sql](
}
/**
+ * Returns a new [[DataFrame]] with a column dropped.
+ * @group dfops
+ */
+ def drop(col: String): DataFrame = {
+ val resolver = sqlContext.analyzer.resolver
+ val shouldDrop = schema.exists(f => resolver(f.name, col))
+ if(shouldDrop) {
+ val colsAfterDrop = schema.filter { field =>
+ val name = field.name
+ !resolver(name, col)
+ }.map(f => Column(f.name))
+ select(colsAfterDrop:_*)
--- End diff --
add space before and after :
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