docs: String getSQLForSelectCount() {
  
          final DBTable dbTable = mModelClazz.getAnnotation(DBTable.class);
          final String dbTableName = dbTable.tableName();
          final List<DBColumn> primaryKeyList = getPrimaryKeyColumnList();
          final String preparedSql;
          if (primaryKeyList.size() > 0) {
              final DBColumn primaryKey = primaryKeyList.get(0);
              final String primaryKeyColumnName = primaryKey.columnName();
  
              preparedSql = "SELECT COUNT(" + primaryKeyColumnName + ") FROM " + dbTableName;
          } else {
              preparedSql = "SELECT COUNT(" + "*" + ") FROM " + dbTableName;
          }
  
          return preparedSql;
      }