Update chdb.h

Author: auxten

chdbstable/chdb.h

@@ -20,9 +20,23 @@ struct CHDB_EXPORT local_result
     uint64_t bytes_read;
 };
 
+struct CHDB_EXPORT local_result_v2
+{
+    char * buf;
+    size_t len;
+    void * _vec; // std::vector<char> *, for freeing
+    double elapsed;
+    uint64_t rows_read;
+    uint64_t bytes_read;
+    char * error_message;
+};
+
 CHDB_EXPORT struct local_result * query_stable(int argc, char ** argv);
 CHDB_EXPORT void free_result(struct local_result * result);
 
+CHDB_EXPORT struct local_result_v2 * query_stable_v2(int argc, char ** argv);
+CHDB_EXPORT void free_result_v2(struct local_result_v2 * result);
+
 #ifdef __cplusplus
 }
 #endif