cloud-fan commented on code in PR #46596:
URL: https://github.com/apache/spark/pull/46596#discussion_r1601726901
##########
sql/catalyst/src/main/java/org/apache/spark/sql/connector/expressions/Cast.java:
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@@ -29,14 +29,31 @@
@Evolving
public class Cast extends ExpressionWithToString {
private Expression expression;
+
+ /**
+ * Original data type of given expression
+ */
+ private DataType expressionDataType;
+
+ /**
+ * Target data type, i.e. data type in which expression will be cast
+ */
private DataType dataType;
+ @Deprecated
Review Comment:
let's explicitly set `expressionDataType` to null in this constructor.
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