在 DataTables 服务器端分组

Question

我使用数据表服务器端。但是当我的查询需要分组来选择数据时，我遇到了问题。如何在数据表服务器端分组？有可能吗？

Answer 1

是的，这是可能的。但是您需要使用“分组依据”作为子查询。否则，分页/数据计数将被搞砸。

SELECT category_name, total_length
FROM (Select 
  any_value(category.name) as category_name, 
  concat(sum(length), \" minutes\") as total_length 
from film 
left join film_category on film_category.film_id = film.film_id
left join category on film_category.category_id = category.category_id
group by category.category_id) as Table1

如果您不想在编码上浪费时间，请查看此链接。这是一个如何使用数据表库的示例。

https://datatables.ozdemir.be/group-by

<?php
require '../../../vendor/autoload.php';
use Ozdemir\Datatables\Datatables;
use Ozdemir\Datatables\DB\MySQL;
include "../../_config.php";
$dt = new Datatables(new MySQL($config));
$dt->query("Select 
  any_value(category.name) as category_name, 
  concat(sum(length), \" minutes\") as total_length 
from film 
left join film_category on film_category.film_id = film.film_id
left join category on film_category.category_id = category.category_id
group by category.category_id");
echo $dt->generate();