srielau commented on code in PR #59167:
URL: https://github.com/apache/spark/pull/59167#discussion_r4226804606
##########
sql/api/src/main/scala/org/apache/spark/sql/catalyst/util/SparkCharVarcharUtils.scala:
##########
@@ -70,6 +70,28 @@ trait SparkCharVarcharUtils {
case v: VarcharType if !SqlApiConf.get.charVarcharFirstClassTypes =>
v.toStringType
case _ => dt
}
+
+ /**
+ * Always replaces CharType/VarcharType with unbounded StringType, including
when first-class
+ * CHAR/VARCHAR types are enabled. Used for STRING-on-the-wire I/O such as
JSON parsing and
Review Comment:
Updated. The helper comments now describe STRING-on-the-wire parsing (JSON)
and no longer mention Hive TRANSFORM.
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