miland-db commented on code in PR #47423:
URL: https://github.com/apache/spark/pull/47423#discussion_r1713639343
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sql/catalyst/src/main/scala/org/apache/spark/sql/catalyst/parser/AstBuilder.scala:
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@@ -136,8 +139,22 @@ class AstBuilder extends DataTypeAstBuilder
label: Option[String],
allowVarDeclare: Boolean): CompoundBody = {
val buff = ListBuffer[CompoundPlanStatement]()
+ val handlers = ListBuffer[ErrorHandler]()
+ val conditions = mutable.HashMap[String, String]()
+ val sqlStates = mutable.Set[String]()
+
ctx.compoundStatements.forEach(compoundStatement => {
- buff += visit(compoundStatement).asInstanceOf[CompoundPlanStatement]
+ val stmt = visit(compoundStatement).asInstanceOf[CompoundPlanStatement]
+
+ stmt match {
+ case handler: ErrorHandler => handlers += handler
+ case condition: ErrorCondition =>
+ assert(!conditions.contains(condition.conditionName)) // Check for
duplicate names.
+ assert(!sqlStates.contains(condition.value)) // Check for
duplicate sqlStates.
Review Comment:
We can throw exceptions here. I will change it now.
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