How to write union query in doctrine?

Question

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?

select *         


        

Answer 1

For Union Query has some Rules

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

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

So you found Proble.

here is solution

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