Github user HyukjinKwon commented on a diff in the pull request:
https://github.com/apache/spark/pull/21472#discussion_r192380680
--- Diff:
sql/catalyst/src/main/scala/org/apache/spark/sql/catalyst/expressions/jsonExpressions.scala
---
@@ -747,8 +748,13 @@ case class StructsToJson(
object JsonExprUtils {
- def validateSchemaLiteral(exp: Expression): StructType = exp match {
- case Literal(s, StringType) =>
CatalystSqlParser.parseTableSchema(s.toString)
+ def validateSchemaLiteral(exp: Expression): DataType = exp match {
+ case Literal(s, StringType) =>
+ try {
+ DataType.fromJson(s.toString)
--- End diff --
I mean, like what we do in Python side:
https://github.com/apache/spark/blob/4f1e38649ebc7710850b7c40e6fb355775e7bb7f/python/pyspark/sql/types.py#L808-L814
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