gengliangwang commented on code in PR #36960: URL: https://github.com/apache/spark/pull/36960#discussion_r911475487
########## sql/catalyst/src/main/scala/org/apache/spark/sql/catalyst/util/ResolveDefaultColumnsUtil.scala: ########## @@ -120,6 +120,54 @@ object ResolveDefaultColumns { } } + /** + * Computes the string representation of an expression suitable for use when storing the + * constant-folded result of DEFAULT column values. + */ + private def expressionToString(expression: Expression): String = { + expression match { + case Cast(child, dataType, _, _) => + s"CAST(${expressionToString(child)} AS ${dataType.catalogString})" + case Literal(value, dataType: DataType) => + valueToString(value, dataType) + case _ => + expression.sql + } + } + + /** + * Computes the string representation of a value suitable for use when storing the + * constant-folded result of DEFAULT column values. + */ + private def valueToString(value: Any, dataType: DataType): String = { + (value, dataType) match { + case (data: GenericArrayData, arrayType: ArrayType) => Review Comment: Shall we fix the `sql` method of `Literal` instead? -- This is an automated message from the Apache Git Service. To respond to the message, please log on to GitHub and use the URL above to go to the specific comment. To unsubscribe, e-mail: reviews-unsubscr...@spark.apache.org For queries about this service, please contact Infrastructure at: us...@infra.apache.org --------------------------------------------------------------------- To unsubscribe, e-mail: reviews-unsubscr...@spark.apache.org For additional commands, e-mail: reviews-h...@spark.apache.org