This seems to work on SQL Server....
CREATE TABLE #product ( pk int, product varchar(50) )
CREATE TABLE #shop ( pk int, shop varchar(50) )
CREATE TABLE #shopProduct ( fkProduct int, fkShop int )
INSERT INTO #product ( pk, product ) VALUES ( 1, 'pro_1' )
INSERT INTO #product ( pk, product ) VALUES ( 2, 'pro_2' )
INSERT INTO #product ( pk, product ) VALUES ( 3, 'pro_3' )
INSERT INTO #product ( pk, product ) VALUES ( 4, 'pro_4' )
INSERT INTO #shop ( pk, shop ) VALUES ( 1, 'shop_1' )
INSERT INTO #shop ( pk, shop ) VALUES ( 2, 'shop_2' )
INSERT INTO #shop ( pk, shop ) VALUES ( 3, 'shop_3' )
INSERT INTO #shopProduct ( fkProduct, fkShop ) VALUES ( 1, 1 )
INSERT INTO #shopProduct ( fkProduct, fkShop ) VALUES ( 1, 2 )
INSERT INTO #shopProduct ( fkProduct, fkShop ) VALUES ( 2, 1 )
INSERT INTO #shopProduct ( fkProduct, fkShop ) VALUES ( 3, 2 )
SELECT
Shop,
Product,
CASE WHEN sp.fkProduct IS NULL THEN 'no' ELSE 'yes' END AS
'Available'
FROM #shop, #product
LEFT OUTER JOIN #shopProduct AS sp ON ( #product.pk = sp.fkProduct )
ORDER BY Shop
It looks right to me, but you'll know for sure if it's doing what you need.
Ade
-----Original Message-----
From: Justin [mailto:[EMAIL PROTECTED]
Sent: 05 January 2004 15:16
To: [EMAIL PROTECTED]
Subject: RE: [ cf-dev ] stupid sql question
yes... if there is a entry for that product in that shop...
feeling humiliated.... :-)
Justin
-----Original Message-----
From: Robertson-Ravo, Neil (RX)
[mailto:[EMAIL PROTECTED]
Sent: 05 January 2004 14:52
To: '[EMAIL PROTECTED]'
Subject: RE: [ cf-dev ] stupid sql question
Where is the availability flag? Is it simply if it exists in a shop?
-----Original Message-----
From: Justin [mailto:[EMAIL PROTECTED]
Sent: 05 January 2004 14:54
To: Cfuk
Subject: [ cf-dev ] stupid sql question
My brain is still in xmas mode, and what should be simple sql is a
challange!
I want to do a query, that lists all the products , with a column with a
yes/no (boolean/bit) column to say if the product is available in that shop
or not
so with
[Product]
pk product
------------------
1 product1
2 product2
3 product3
[Shop]
pk shop
--------------
1 shop_1
2 shop_2
[ShopProduct]
FKProduct FKShop
-------------------
1 1
1 2
2 1
3 2
I should have
Shop product available
------------------------------
shop_1 product1 yes
shop_1 product2 yes
shop_1 product3 no
shop_2 product1 yes
shop_2 product2 no
shop_2 product3 yes
I know its a CROSS JOIN between shop and product with a outer? join on the
ShopProduct table but just can't get it together...
Thanks
Justin
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