diff --git a/pkg/sql/plan/order_binder.go b/pkg/sql/plan/order_binder.go
index 18a6cb3ab1e14..7c7e75455640b 100644
--- a/pkg/sql/plan/order_binder.go
+++ b/pkg/sql/plan/order_binder.go
@@ -38,7 +38,7 @@ func (b *OrderBinder) BindExpr(astExpr tree.Expr) (*plan.Expr, error) {
 			for _, selectField := range b.ctx.projectByAst {
 				if selectField.aliasName != "" {
 					continue
-				}// deptno
+				}
 				if projectField, ok1 := selectField.ast.(*tree.UnresolvedName); ok1 && projectField.ColName() == colRef.ColName() {
 					return nil, moerr.NewInvalidInputf(b.GetContext(), "Column '%s' in order clause is ambiguous", colRef.ColName())
 				}