diff --git a/src/sql/engine/expr/ob_expr_json_query.cpp b/src/sql/engine/expr/ob_expr_json_query.cpp
index 32acb61e7f..68b1515821 100644
--- a/src/sql/engine/expr/ob_expr_json_query.cpp
+++ b/src/sql/engine/expr/ob_expr_json_query.cpp
@@ -145,7 +145,7 @@ int ObExprJsonQuery::calc_result_typeN(ObExprResType& type,
 
     // ASCII clause
     if (OB_SUCC(ret)) {
-      if (OB_FAIL(ObJsonExprHelper::parse_asc_option(types_stack[4], types_stack[0], type, type_ctx))) {
+      if (OB_FAIL(ObJsonExprHelper::parse_asc_option(types_stack[5], types_stack[0], type, type_ctx))) {
         LOG_WARN("fail to parse asc option.", K(ret));
       }
     }
diff --git a/src/sql/resolver/expr/ob_raw_expr_resolver_impl.cpp b/src/sql/resolver/expr/ob_raw_expr_resolver_impl.cpp
index 9292e166bd..89ccb3d60f 100644
--- a/src/sql/resolver/expr/ob_raw_expr_resolver_impl.cpp
+++ b/src/sql/resolver/expr/ob_raw_expr_resolver_impl.cpp
@@ -5054,7 +5054,7 @@ int ObRawExprResolverImpl::process_ora_json_object_node(const ParseNode *node, O
   ObVector<const ParseNode*> key_value_arr;
   ParseNode* data_node = NULL;
   ParseNode* cur_node_kv = NULL;
-  int cur_col_size = 0;
+  int cur_col_size = ctx_.columns_->count();
   ParseNode key_node;
   CK(OB_NOT_NULL(node));
   int32_t num = 0;