如何在学说中编写联合查询？

I want to use union in doctrine, i searched a lot but didn't get any success, this is my union query in sql, how to convert this query in doctrine?

我想在doctrine中使用union,我搜索了很多但没有取得任何成功,这是我在sql中的union查询,如何在doctrine中转换这个查询?

select * from (select orderid,tutorialId,points,allow_multiple,question,answer1,image1,correct1,answer2,image2,correct2,answer3,image3,correct3,answer4,image4,correct4,answer5,image5,correct5,'1' as istest,'' as content,'' as media,'' as media_type_id from tutorial_test

union

select orderid,tutorialId,'0' as istest,content,media,media_type_id,'' as points,'' as allow_multiple,'' as question,'' as answer1,'' as image1,'' as correct1,'' as answer2,'' as image2,'' as correct2,'' as answer3,'' as image3,'' as correct3,'' as answer4,'' as image4,'' as correct4,'' as answer5,'' as image5,'' as correct5  from tutorial_elements) a where a. tutorialId = 1 order by orderid asc

AND this one is my doctrine query

这一个是我的学说查询

    $query  = "SELECT * FROM(SELECT
                    tt.tutorialid
                FROM
                    TutorialTest tt
                UNION 
                SELECT te.tutorialid) tte
                WHERE tte.tutorialid = 1    

    ";
    $qb     = $this->Doctrine->createQuery($query);
    $tutorial_test  = $qb->getResult();

i researched alot but didn't get any success, if any one can help, million of thanks in advance fot that.

我研究了很多,但没有取得任何成功,如果任何人可以帮助,万分感谢提前。

2 个解决方案

#1

Well i have found a solution

好吧,我找到了解决方案

We can use this query with RSM as following

我们可以将此查询与RSM一起使用,如下所示

"Usman is basically table name and class"

“Usman基本上是桌面名称和类”

    $rsm = new ResultSetMapping();
    $rsm->addEntityResult('Usmans', 'u');
    $rsm->addFieldResult('u', 'orderid', 'orderid');
    $rsm->addFieldResult('u', 'tutorialId', 'tutorialid');
    $rsm->addFieldResult('u', 'points', 'points');

    $query = $this->Doctrine->createNativeQuery('SELECT * FROM usman', $rsm); 
    $tutorial_tests = $query->getResult();

AND we can use without ORM as

我们可以在没有ORM的情况下使用

$testQuery = "
    select * from (
            select orderid, 
                tutorialId, 
                points, 
                allow_multiple, 
                question, 
                answer1, 
                image1, 
                correct1, 
                answer2, 
                image2, 
                correct2, 
                answer3, 
                image3, 
                correct3, 
                answer4, 
                image4, 
                correct4, 
                answer5, 
                image5, 
                correct5, 
                '1' as istest, 
                '' as content, 
                '' as media, 
                '' as media_type_id 
            from tutorial_test

            union

            select orderid, 
                tutorialId, 
                '0' as istest, 
                content, 
                media, 
                media_type_id, 
                '' as points, 
                '' as allow_multiple, 
                '' as question, 
                '' as answer1, 
                '' as image1,
                '' as correct1,
                '' as answer2,
                '' as image2,
                '' as correct2,
                '' as answer3,
                '' as image3,
                '' as correct3,
                '' as answer4,
                '' as image4,
                '' as correct4,
                '' as answer5,
                '' as image5,
                '' as correct5  
            from tutorial_elements
        ) a 
        where a. tutorialId = $tutorial_id 
        order by orderid asc
";

$resultSets = $this->Doctrine->getConnection()->fetchAll($testQuery);

#2

-3

For Union Query has some Rules

对于Union Query有一些规则

(1) All SELECT Statements has same data type and same no of columns

(1)所有SELECT语句具有相同的数据类型和相同的列数

In your select query has different datatype, no of columns are not match.

在您的选择查询中具有不同的数据类型,没有列不匹配。

So you found Proble.

所以你发现了问题。

here is solution

这是解决方案

select orderid, tutorialId, points, allow_multiple, question, answer1, image1, correct1, answer2, image2, correct2, answer3, image3, correct3, answer4, image4, correct4, answer5, image5, correct5,'1' as istest,'' as content,'' as media,'' as media_type_id 
from tutorial_test 

union

select orderid, tutorialId,'0' as istest, content, media, media_type_id,'' as points,'' as allow_multiple,'' as question,'' as answer1,'' as image1,'' as correct1,'' as answer2,'' as image2,'' as correct2,'' as answer3,'' as image3,'' as correct3,'' as answer4,'' as image4,'' as correct4,'' as answer5,'' as image5,'' as correct5, '1' as istest,'' as content,'' as media,'' as media_type_id  
from tutorial_elements 
where a. tutorialId = 1 
order by orderid asc

#1