code: public static String deleteFromTable(Class<?> entityClass, String defaultTableName) {
          StringBuilder sql = new StringBuilder();
          sql.append("DELETE FROM ");
          sql.append(getDynamicTableName(entityClass, defaultTableName));
          sql.append(" ");
          return sql.toString();
      }
docs: delete tableName - 动态表名
  
  @param entityClass
  @param defaultTableName
  @return