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07.16.2008 at 07:27AM PDT, ID: 23569788
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9.8

SELECT query returns more rows in 4.1 than 5.0?

Asked by redheaded in MySQL Server

Tags: , ,

I have two servers. Our dev server is running mysql 5.0, the live server is 4.1. All tables are identical. I have a query that does a couple of outer joins. It selects projects that have awards (with categories for awards) and each project is associated with a page that displays the project information. It works perfectly in 5.0 and returns 33 rows. When ran in 4.1, it returns over 1200. It's pulling every page it seems.

OUTPUT 4.1: http://140.174.95.121/page.php?id=31
OUTPUT 5.0: http://dev.redheadcompanies.com:8021/page.php?id=31

Query below...

I think it has something to do with that RIGHT OUTER JOIN for pulling in the awards. If I make it a left outer join, it shows 30 rows, 3 less than the other one, as it omits some awards that don't have projects to them (which I need to display).

I tried removing different joins, aside from the core ones, and I can't see which join is causing the issue. All the tables involved are identical. Did the method of joins change between these versions? Please help! Thanks!

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select distinct a.page_id as project_page_id, a.page_name, b.page_name as page_parent_name, a.page_is_active, tblprojects.project_short_name, tblawards.* 
 
from tblpages a 
 
left join tblpages b on a.page_parent_id = b.page_id 
left outer join tblprojects on (a.page_id = tblprojects.page_id) 
left outer join tblprojectawards on tblprojectawards.project_id = tblprojects.project_id 
right outer join tblawards on tblawards.award_id = tblprojectawards.award_id 
left outer join tblcategories on tblawards.category_id = tblcategories.category_id 
 
where tblawards.page_id = 31 
 
order by award_year desc, category_name asc, award_name asc
[+][-]07.16.2008 at 10:53AM PDT, ID: 22018405

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Zone: MySQL Server
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Solution Provided By: AdrianSRU
Participating Experts: 1
Solution Grade: A
 
 
 
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