Github user gatorsmile commented on a diff in the pull request: https://github.com/apache/spark/pull/14482#discussion_r73408103 --- Diff: sql/catalyst/src/main/scala/org/apache/spark/sql/catalyst/analysis/CheckAnalysis.scala --- @@ -61,6 +64,38 @@ trait CheckAnalysis extends PredicateHelper { } } + private def checkColumnNames(tableDesc: CatalogTable): Unit = { + val colNames = tableDesc.schema.map(_.name) + val colNamesSet = colNames.toSet + checkDuplicatedColumnNames(colNames, colNamesSet, "table definition of " + tableDesc.identifier) + + def requireSubsetOfSchema(subColNames: Seq[String], colType: String): Unit = { + val subColNamesSet = subColNames.toSet + checkDuplicatedColumnNames(subColNames, subColNamesSet, colType) + if (!subColNamesSet.subsetOf(colNamesSet)) { + failAnalysis(s"$colType columns (${subColNames.mkString(", ")}) must be a subset of " + + s"schema (${colNames.mkString(", ")}) in table '${tableDesc.identifier}'") + } + } + + // Verify that the provided columns are part of the schema + requireSubsetOfSchema(tableDesc.partitionColumnNames, "partition") + requireSubsetOfSchema(tableDesc.bucketSpec.map(_.bucketColumnNames).getOrElse(Nil), "bucket") + requireSubsetOfSchema(tableDesc.bucketSpec.map(_.sortColumnNames).getOrElse(Nil), "sort") + } + + private def checkDuplicatedColumnNames( + colNames: Seq[String], + colNamesSet: Set[String], + colType: String): Unit = { + if (colNamesSet.size != colNames.length) { + val duplicateColumns = colNames.groupBy(identity).collect { + case (x, ys) if ys.length > 1 => quoteIdentifier(x) + } --- End diff -- Do we need to consider the case sensitivity here?
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