cloud-fan commented on a change in pull request #33113:
URL: https://github.com/apache/spark/pull/33113#discussion_r663724637
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File path:
sql/catalyst/src/main/scala/org/apache/spark/sql/catalyst/analysis/Analyzer.scala
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@@ -3527,13 +3527,35 @@ class Analyzer(override val catalogManager:
CatalogManager)
* Rule to mostly resolve, normalize and rewrite column names based on case
sensitivity
* for alter table commands.
*/
- object ResolveFieldNames extends Rule[LogicalPlan] {
+ object ResolveAlterTableCommands extends Rule[LogicalPlan] {
def apply(plan: LogicalPlan): LogicalPlan = plan.resolveOperatorsUp {
case a: AlterTableCommand if a.table.resolved =>
- a.transformExpressions {
+ val table = a.table.asInstanceOf[ResolvedTable]
+ val transformed = a.transformExpressions {
case u: UnresolvedFieldName =>
- val table = a.table.asInstanceOf[ResolvedTable]
- resolveFieldNames(table.schema,
u.name).map(ResolvedFieldName(_)).getOrElse(u)
+ resolveFieldNames(table.schema, u.name).getOrElse(u)
+ case u: UnresolvedFieldPosition => u.position match {
+ case after: After =>
+ resolveFieldNames(table.schema, u.fieldName.init :+
after.column())
Review comment:
https://github.com/apache/spark/pull/33213
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