Please start any new threads on our new site at We've got lots of great SQL Server experts to answer whatever question you can come up with.

Our new SQL Server Forums are live! Come on over! We've restricted the ability to create new threads on these forums.

SQL Server Forums
Profile | Active Topics | Members | Search | Forum FAQ
Save Password
Forgot your Password?

 All Forums
 SQL Server 2012 Forums
 Transact-SQL (2012)
 how to combine these two queries?
 Reply to Topic
 Printer Friendly
Author Previous Topic Topic Next Topic  

Starting Member

9 Posts

Posted - 02/18/2013 :  20:44:15  Show Profile  Reply with Quote
Hi there. I have to combine these two queries into one using a join:

SELECT categories.category_id, categories.title, categories.description,categories.parent_id,categories.display_weight,
categories.image_thumb, categories.deleted, categories.image_banner,
FROM categories 
AND parent_id=18
AND category_id <> 18

And here's the second one:

SELECT `product.product_id`, ``, `product.image_thumb`, `product.deleted` 
FROM (`product`) 
WHERE `product_id` IN (select product_id from product_category where category_id=18) 
ORDER BY `display_weight` DESC

A few points:

It's possible to have a scenario where the first query will return 0 rows, but the second does contain records.

Also, you'll notice that the second query has a subquery baked in. The relationship between the product table and category table is defined in the product_category table.
The product table on its own doesn't know which categories the products belong to.

Any help would be appreciated.

Very Important crosS Applying yaK Herder

52326 Posts

Posted - 02/19/2013 :  00:12:34  Show Profile  Reply with Quote

SELECT p.product_id,, p.image_thumb, p.deleted ,
c.category_id, c.title, c.description,c.parent_id,c.display_weight,
c.image_thumb, c.deleted, c.image_banner
FROM product p
JOIN product_category pc
ON pc.product_id = p.product_id 
LEFT JOIN categories c
ON c.parent_id = ps.category_id
AND c.category_id <> ps.category_id
ORDER BY p.display_weight DESC

SQL Server MVP

Edited by - visakh16 on 02/19/2013 00:12:51
Go to Top of Page
  Previous Topic Topic Next Topic  
 Reply to Topic
 Printer Friendly
Jump To:
SQL Server Forums © 2000-2009 SQLTeam Publishing, LLC Go To Top Of Page
This page was generated in 0.02 seconds. Powered By: Snitz Forums 2000