Batch 批量处理查询到的数据.

BatchConcurrent 并发批量处理查询到的数据.

FindAll sql里select的字段数量必须与R的ScanFields方法返回的数组元素数量一致.

WrapConnFindAll query by stmt and args, return values with dest support many rows.

WrapSQLQueryRows query by stmt and args, return values with dest only support one row.