Github user gatorsmile commented on a diff in the pull request: https://github.com/apache/spark/pull/16626#discussion_r101958217 --- Diff: sql/core/src/test/scala/org/apache/spark/sql/sources/TableScanSuite.scala --- @@ -416,4 +416,21 @@ class TableScanSuite extends DataSourceTest with SharedSQLContext { val comments = planned.schema.fields.map(_.getComment().getOrElse("NO_COMMENT")).mkString(",") assert(comments === "SN,SA,NO_COMMENT") } + + test("ALTER TABLE ADD COLUMNS does not support RelationProvider") { + withTable("ds_relationProvider") { + sql( + """ + |CREATE TABLE ds_relationProvider + |USING org.apache.spark.sql.sources.SimpleScanSource + |OPTIONS ( + | From '1', + | To '10' + |)""".stripMargin) --- End diff -- Syntax issue
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