srielau commented on code in PR #52334:
URL: https://github.com/apache/spark/pull/52334#discussion_r2418067359
##########
sql/core/src/main/scala/org/apache/spark/sql/execution/SparkSqlParser.scala:
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@@ -49,10 +53,132 @@ class SparkSqlParser extends AbstractSqlParser {
val astBuilder = new SparkSqlAstBuilder()
private val substitutor = new VariableSubstitution()
+ private[execution] val parameterHandler = new ParameterHandler()
+
+ // Thread-local flag to track whether we're in a top-level parse operation
+ // This is used to prevent parameter substitution during identifier/data
type parsing
+ private val isTopLevelParse = new ThreadLocal[Boolean] {
Review Comment:
Yes, we can!
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