cloud-fan commented on code in PR #50839:
URL: https://github.com/apache/spark/pull/50839#discussion_r2081734322
##########
sql/catalyst/src/main/scala/org/apache/spark/sql/catalyst/plans/logical/v2AlterTableCommands.scala:
##########
@@ -309,6 +316,27 @@ case class AddConstraint(
protected def withNewChildInternal(newChild: LogicalPlan): LogicalPlan =
copy(table = newChild)
}
+/**
+ * The logical plan of the ALTER TABLE ... ADD CONSTRAINT command for Check
constraints.
+ */
+case class AddCheckConstraint(
+ override val table: LogicalPlan,
Review Comment:
The current code is fragile as we have code like the following
```
case a: AlterTableCommand if a.table.resolved &&
hasUnresolvedFieldName(a) =>
val table = a.table.asInstanceOf[ResolvedTable]
```
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