Question

我正在尝试在此处按新列分组-一分为三。在这种情况下，我想查看每个日期的未结订单，已关闭订单和计划订单。

目前，使用下面的代码，我得到了结果，但是我想创建一个包含主要日期的列，并为每个日期计数。

我得到的结果如下：

Date        ClosedNo    OpenNo  PlanNo
22/10/2018  3                   3
23/10/2018  1                   1
24/10/2018                      1
25/10/2018  1           1       1
26/10/2018              1   
27/10/2018              2

所需的结果是：

CREATE TABLE Orders
(Closed DATE, 
Open DATE,
Plan DATE);


insert into Orders values ("2018-10-23",NULL,NULL);    
insert into Orders values ("2018-10-22",NULL,NULL);    
insert into Orders values ("2018-10-22",NULL,NULL);    
insert into Orders values ("2018-10-22",NULL,NULL);    
insert into Orders values (NULL,NULL,"2018-10-23");
insert into Orders values (NULL,NULL,"2018-10-22");
insert into Orders values (NULL,NULL,"2018-10-22");
insert into Orders values (NULL,NULL,"2018-10-22");
insert into Orders values (NULL,"2018-10-26",NULL);    
insert into Orders values (NULL,"2018-10-27",NULL);    
insert into Orders values (NULL,"2018-10-27",NULL); 
insert into Orders values (NULL,"2018-10-25",NULL); 
insert into Orders values (NULL,NULL,"2018-10-24");
insert into Orders values ("2018-10-25",NULL,NULL);    
insert into Orders values (NULL,NULL,"2018-10-25");

SELECT 
Closed
, COUNT(Closed) AS 'ClosedNo'
,Open
, COUNT(Open) AS 'OpenNo'
,Plan 
, COUNT(Plan) AS 'PlanNo'
FROM 
Orders
GROUP BY
Closed, Open, Plan;

这是我使用的代码。

<container xmlns="http://symfony.com/schema/dic/services" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" xsi:schemaLocation="http://symfony.com/schema/dic/services http://symfony.com/schema/dic/services/services-1.0.xsd">

<parameters>
    <parameter key="sonata.media.admin.media.class">Application\Sonata\MediaBundle\Admin\MediaAdmin</parameter>
</parameters>
<services>
    <service id="sonata.media.admin.media" class="%sonata.media.admin.media.class%" public="true">
    <tag name="sonata.admin" manager_type="orm" group="%sonata.media.admin.groupname%" label_catalogue="%sonata.media.admin.media.translation_domain%" label="media" label_translator_strategy="sonata.admin.label.strategy.underscore" icon="%sonata.media.admin.groupicon%"/>
    <argument/>
    <argument>%sonata.media.admin.media.entity%</argument>
    <argument>%sonata.media.admin.media.controller%</argument>
    <argument type="service" id="sonata.media.pool"/>
    <argument type="service" id="sonata.media.manager.category" on-invalid="null"/>
    <call method="setModelManager">
        <argument type="service" id="sonata.media.admin.media.manager"/>
    </call>
    <call method="setTranslationDomain">
        <argument>%sonata.media.admin.media.translation_domain%</argument>
    </call>
    <call method="setTemplates">
        <argument type="collection">
            <argument key="inner_list_row">@SonataMedia/MediaAdmin/inner_row_media.html.twig</argument>
            <argument key="outer_list_rows_mosaic">@SonataMedia/MediaAdmin/list_outer_rows_mosaic.html.twig</argument>
            <argument key="base_list_field">@SonataAdmin/CRUD/base_list_flat_field.html.twig</argument>
            <argument key="list">@SonataMedia/MediaAdmin/list.html.twig</argument>
            <argument key="edit">@SonataMedia/MediaAdmin/edit.html.twig</argument>
        </argument>
    </call>
</service>

Answer 1

首先，Open和Date是Keyword(s) in MySQL。您应该将您的专栏真正命名为其他名称；否则您将不得不使用反引号。
我们可以使用Coalesce()函数来获取Date。它将考虑第一个非空值。
使用Count()聚合函数，我们可以为Date组计算非空行。

请尝试以下操作：

SELECT 
  COALESCE(Closed, `Open`, Plan) AS `Date`, 
  COUNT(Closed) AS ClosedNo, 
  COUNT(`Open`) AS OpenNo, 
  COUNT(Plan) AS PlanNo 
FROM Orders 
GROUP BY `Date`

结果

| Date       | ClosedNo | OpenNo | PlanNo |
| ---------- | -------- | ------ | ------ |
| 2018-10-22 | 3        | 0      | 3      |
| 2018-10-23 | 1        | 0      | 1      |
| 2018-10-24 | 0        | 0      | 1      |
| 2018-10-25 | 1        | 1      | 1      |
| 2018-10-26 | 0        | 1      | 0      |
| 2018-10-27 | 0        | 2      | 0      |

View on DB Fiddle

MySQL-按新栏分组

1 个答案: