returning written rows right from response

Author: chernser

jdbc-v2/src/main/java/com/clickhouse/jdbc/StatementImpl.java

@@ -193,16 +193,18 @@ public int executeUpdate(String sql, QuerySettings settings) throws SQLException
         QuerySettings mergedSettings = QuerySettings.merge(connection.getDefaultQuerySettings(), settings);
         mergedSettings.serverSetting(ServerSettings.WAIT_END_OF_QUERY, "1");
         lastSql = parseJdbcEscapeSyntax(sql);
+        int updateCount = 0;
         try (QueryResponse response = queryTimeout == 0 ? connection.client.query(lastSql, mergedSettings).get()
                 : connection.client.query(lastSql, mergedSettings).get(queryTimeout, TimeUnit.SECONDS)) {
             currentResultSet = null;
+            updateCount = (int) response.getWrittenRows();
             metrics = response.getMetrics();
             lastQueryId = response.getQueryId();
         } catch (Exception e) {
             throw ExceptionUtils.toSqlState(e);
         }
 
-        return (int) metrics.getMetric(ServerMetrics.NUM_ROWS_WRITTEN).getLong();
+        return updateCount;
     }
 
     @Override