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[SPARK-18216][SQL] Make Column.expr public #15724

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[SPARK-18216][SQL] Make Column.expr public #15724

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5 changes: 4 additions & 1 deletion sql/core/src/main/scala/org/apache/spark/sql/Column.scala
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Original file line number Diff line number Diff line change
Expand Up @@ -118,6 +118,9 @@ class TypedColumn[-T, U](
* $"a" === $"b"
* }}}
*
* Note that the internal Catalyst expression can be accessed via "expr", but this method is for
* debugging purposes only and can change in any future Spark releases.
*
* @groupname java_expr_ops Java-specific expression operators
* @groupname expr_ops Expression operators
* @groupname df_ops DataFrame functions
Expand All @@ -126,7 +129,7 @@ class TypedColumn[-T, U](
* @since 1.3.0
*/
@InterfaceStability.Stable
class Column(protected[sql] val expr: Expression) extends Logging {
class Column(val expr: Expression) extends Logging {

def this(name: String) = this(name match {
case "*" => UnresolvedStar(None)
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