diff --git a/src/sql/resolver/ob_resolver_utils.cpp b/src/sql/resolver/ob_resolver_utils.cpp
index 0ef236abd1a2b5c24746c1e66fa52c899d53dbed..b25e2a58061a3419e00f6df94e1dcdc8d1a2b072 100644
--- a/src/sql/resolver/ob_resolver_utils.cpp
+++ b/src/sql/resolver/ob_resolver_utils.cpp
@@ -7974,7 +7974,7 @@ int ObResolverUtils::check_foreign_key_set_null_satisfy(
       const ObString &fk_col_name = arg.child_columns_.at(i);
       const ObColumnSchemaV2 *fk_col_schema = child_table_schema.get_column_schema(fk_col_name);
       if (OB_ISNULL(fk_col_schema)) {
-        ret = OB_ERR_UNEXPECTED;
+        ret = OB_ERR_COLUMN_NOT_FOUND;
         LOG_WARN("foreign key column schema is null", K(ret), K(i));
       } else if (fk_col_schema->is_generated_column()) {
         ret = OB_ERR_UNSUPPORTED_FK_SET_NULL_ON_GENERATED_COLUMN;