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sql query

Posted on 2011-03-02
9
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Last Modified: 2012-05-11
hello,
i am trying use a join to get all the data from both the tables, I am struggling to get dedires result

product
------------------
productid      productnumber   stock
563            1334            13
564            1338            8

product_attributes
-------------------
poselid             poselstock      poselsku
p563:o26:12m        5            1335      
p563:o26:18m        6            1336      
p563:o26:6m              2            1334      

I want to match the productnumber with poselsku and all the 3 records from the product_attributes table and show the stock from poselstock

The desired output would be
productid      productnumber      stock
-----------------------------------
563             1334             2
563             1335             5
563             1336             6
564             1338             8

I hope you see what I am trying to do?

Thanks

0
Comment
Question by:newbie27
9 Comments
 
LVL 24

Expert Comment

by:jimyX
ID: 35015740
You can use union:

Select * from product union select * from product_attributes
0
 
LVL 6

Expert Comment

by:kswathi
ID: 35015751
Try the below code:

Select P.ProductId,
            P.productnumber,
            PA.Stock
from product P
left
outer join product_attributes PA
on    P.productnumber = PA.poselsku

0
 
LVL 8

Author Comment

by:newbie27
ID: 35015766
I am getting this exception ...

>>All queries combined using a UNION, INTERSECT or EXCEPT operator must have an equal number of expressions in their target lists.

Also, if you could please note, for the attributes stock, I am not showing from the produts table, instead i want to show the stock available in the products_attributes table for the match

thanks
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LVL 8

Author Comment

by:newbie27
ID: 35015774
>>kswathi:

thanks

I am only getting one match from the attribtues table

563             1334             2
564             1338             8
0
 
LVL 6

Expert Comment

by:kswathi
ID: 35015798
try right outer join
0
 
LVL 6

Expert Comment

by:kswathi
ID: 35015826
try the links

or  CROSS JOIN
http://en.wikipedia.org/wiki/Join_(SQL)
0
 
LVL 8

Author Comment

by:newbie27
ID: 35015890
I am not getting it right, please advise

this is what I am trying to do

if we find the product with this match product.productnumber = product_attributes.productnumber

then fetch product.productid, and get all the rows from the product_attributes matching th poselid          

product.productid = : 563    
product_attributes = left(p563:o26:6m,4)

so basically for 563, there are 3 rows in the attributes table which I should get in the result ...

I hope someone may understand what I am trying to say?

 
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LVL 22

Accepted Solution

by:
Thomasian earned 500 total points
ID: 35016164
SELECT p.productid, p.productnumber, COALESCE(a.poselstock,p.stock) stock
FROM product p LEFT JOIN
     product_attributes a ON CAST(p.productid as varchar)=SUBSTRING(a.poselid,2,3)
ORDER BY p.productid, a.poselsku

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Author Closing Comment

by:newbie27
ID: 35016559
Thank you
0

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