hopefulnick commented on code in PR #42398:
URL: https://github.com/apache/spark/pull/42398#discussion_r1387915950


##########
sql/catalyst/src/main/scala/org/apache/spark/sql/catalyst/parser/AstBuilder.scala:
##########
@@ -2214,6 +2214,30 @@ class AstBuilder extends DataTypeAstBuilder with 
SQLConfHelper with Logging {
     }
   }
 
+  /**
+   * Create a ListAgg expression.
+   */
+  override def visitListAgg(ctx: ListAggContext): AnyRef = {
+    val column = expression(ctx.aggEpxr)
+    val sortOrder = visitSortItem(ctx.sortItem)
+    val isDistinct = Option(ctx.setQuantifier()).exists(_.DISTINCT != null)
+    if (!column.semanticEquals(sortOrder.child) && isDistinct) {
+      throw 
QueryCompilationErrors.functionAndOrderExpressionMismatchError("LISTAGG", 
column,
+        sortOrder.child)
+    }
+    val delimiter = if (ctx.delimiter != null) Literal(ctx.delimiter.getText) 
else Literal(",")

Review Comment:
   ctx.delimiter.getText includes quotes, like "','"



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