Github user gatorsmile commented on a diff in the pull request: https://github.com/apache/spark/pull/20696#discussion_r171317432 --- Diff: sql/core/src/main/scala/org/apache/spark/sql/execution/command/ddl.scala --- @@ -314,8 +314,8 @@ case class AlterTableChangeColumnCommand( val resolver = sparkSession.sessionState.conf.resolver DDLUtils.verifyAlterTableType(catalog, table, isView = false) - // Find the origin column from schema by column name. - val originColumn = findColumnByName(table.schema, columnName, resolver) + // Find the origin column from dataSchema by column name. + val originColumn = findColumnByName(table.dataSchema, columnName, resolver) --- End diff -- Only data schema? How about partitioning schema?
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