Github user gatorsmile commented on a diff in the pull request: https://github.com/apache/spark/pull/16626#discussion_r106786118 --- Diff: sql/core/src/test/scala/org/apache/spark/sql/execution/command/DDLSuite.scala --- @@ -166,6 +166,25 @@ class InMemoryCatalogedDDLSuite extends DDLSuite with SharedSQLContext with Befo } } + Seq("true", "false").foreach { caseSensitive => + test(s"alter table add columns with existing column name - caseSensitive $caseSensitive") { + withSQLConf(("spark.sql.caseSensitive", caseSensitive)) { --- End diff -- `withSQLConf(SQLConf.CASE_SENSITIVE.key -> caseSensitive)`
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