Github user gatorsmile commented on a diff in the pull request:
https://github.com/apache/spark/pull/13415#discussion_r65280449
--- Diff:
sql/core/src/main/scala/org/apache/spark/sql/execution/SparkSqlParser.scala ---
@@ -884,6 +884,10 @@ class SparkSqlAstBuilder(conf: SQLConf) extends
AstBuilder {
// to include the partition columns here explicitly
val schema = cols ++ partitionCols
+ // Ensuring whether no duplicate name is used in table definition;
+ // Also ensuring the existing columns are not used as partition columns
+ checkDuplicateNames(colNames = schema.map(_.name), ctx)
--- End diff --
After code changes, we are verifying two cases: one is duplicate names in
table definition; another is column repeated in partitioning columns.
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