使用Propel 1.6从3个表中检索信息和计数的单个SQL查询

Question

我有以下(简化)数据库结构:

表 book

id
title

表 page

id
bookId
number

表 figure

id
pageId

page.bookId并且figure.pageId是指向主键外键book.id和page.id分别.

一本书没有页面,页面也没有数字.

对于指定的书籍ID,使用单个 sql查询,我想要检索

1. 书中的信息
2. 包含各自信息的页面列表
3. 每页的数字

结果的示例JSON表示如下:

{
    "id": 34, 
    "title": "The title"
    "pages": [
    {
        "id": "44",
        "number": 1
        "figureCount": 2
    },
    {
        "id": "45",
        "number": 2
        "figureCount": 5
    },
    ...
    ]
}

这可能与Propel 1.6和结果SQL查询应该是什么？

我使用MySql 5.0.

编辑:这是我的(简化)Propel schema.xml:

<table name="book" phpName="Book">
    <column name="id" type="bigint" required="true" primaryKey="true" autoIncrement="true" />
    <column name="title" type="varchar" size="512" required="true" />
</table>

<table name="page" phpName="Page" >
    <column name="id" type="bigint" required="true" primaryKey="true" autoIncrement="true" />
    <column name="book_id" type="bigint" required="true" />
    <column name="number" type="integer" required="true" />
    <foreign-key foreignTable="book" phpName="Book" refPhpName="Page" onUpdate = "cascade" onDelete = "cascade">
       <reference local="book_id" foreign="id" />
    </foreign-key>
</table>

<table name="figure" phpName="Figure">
    <column name="id" type="bigint" required="true" primaryKey="true" autoIncrement="true" />
    <column name="page_id" type="bigint" required="true" />
    <foreign-key foreignTable="page" phpName="Page" refPhpName="Figure" onUpdate = "cascade" onDelete = "cascade">
       <reference local="page_id" foreign="id"/>
    </foreign-key>
</table>

Answer 1

根据@ user1073631的答案,推进查询应该是这样的:

$books = BookQuery::create()
  ->select(array('Book.Id', 'Book.Title', 'Page.Id', 'Page.Number'))
  ->withColumn('count(Figure.ID)', 'FigureCount')
  ->leftJoin('Book.Page')
  ->leftJoin('Page.Figure')
  ->groupBy('Book.Id')
  ->groupBy('Book.Title')
  ->groupBy('Page.Id')
  ->groupBy('Page.Number')
  ->find();

我不确定join()看到你生成的类可以更好地确定这一点.