brkyvz commented on a change in pull request #25305: [SPARK-28572][SQL] Simple
analyzer checks for CREATE TABLE v2
URL: https://github.com/apache/spark/pull/25305#discussion_r310726115
##########
File path:
sql/core/src/main/scala/org/apache/spark/sql/execution/datasources/DataSourceResolution.scala
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@@ -245,6 +246,55 @@ case class DataSourceResolution(
catalog: TableCatalog,
identifier: Identifier,
create: CreateTableStatement): CreateV2Table = {
+
+ val isCaseSensitive = conf.caseSensitiveAnalysis
+ // Check that columns are not duplicated in the schema
+ val flattenedSchema =
SchemaUtils.explodeNestedFieldNames(create.tableSchema)
+ SchemaUtils.checkColumnNameDuplication(
+ flattenedSchema,
+ s"in the table definition of ${identifier.quoted}",
+ isCaseSensitive)
+
+ // Check that columns are not duplicated in the partitioning statement
+ SchemaUtils.checkTransformDuplication(
+ create.partitioning, "in the partition schema", isCaseSensitive)
+
+ // Check that columns are not duplicated in the bucketing specification
+ SchemaUtils.checkTransformDuplication(
+ create.bucketSpec.map(_.asTransform).toSeq, "in the bucket definition",
isCaseSensitive)
+ if (create.tableSchema.isEmpty) {
Review comment:
Creating a table may be to simply create a pointer in the metastore over an
existing path based table
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