[GitHub] [spark] dongjoon-hyun commented on a change in pull request #24385: [SPARK-27480][SQL] Improve `EXPLAIN DESC QUERY` to show the input SQL statement

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dongjoon-hyun commented on a change in pull request #24385: [SPARK-27480][SQL] Improve `EXPLAIN DESC QUERY` to show the input SQL statement
URL: https://github.com/apache/spark/pull/24385#discussion_r276845802
 
 

 ##########
 File path: sql/core/src/main/scala/org/apache/spark/sql/execution/SparkSqlParser.scala
 ##########
 @@ -373,7 +374,11 @@ class SparkSqlAstBuilder(conf: SQLConf) extends AstBuilder(conf) {
    * Create a [[DescribeQueryCommand]] logical command.
    */
   override def visitDescribeQuery(ctx: DescribeQueryContext): LogicalPlan = withOrigin(ctx) {
-    DescribeQueryCommand(visitQuery(ctx.query))
+    val query = ctx.query
+    val startIndex = query.start.getStartIndex
+    val endIndex = query.stop.getStopIndex
+    val interval = new Interval(startIndex, endIndex)
 
 Review comment:
   nit. Can we remove the one-time used variables?
   ```scala
   -    val startIndex = query.start.getStartIndex
   -    val endIndex = query.stop.getStopIndex
   -    val interval = new Interval(startIndex, endIndex)
   +    val interval = new Interval(query.start.getStartIndex, query.stop.getStopIndex)
   ```

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