Yes! I tougth that I'll get what you have been written but instead I get
only those barcodes from shop 1 which are also in shop 2 and those which are
in shop 1 and not in shop 2 don't apear. It seems that LEFT JOIN in this
situation acts like regular JOIN. Why?

On 2/5/06, Helen Borrie <helebor@...> wrote:
>
>
> Please TRIM YOUR POSTS!!
>
> At 10:00 PM 5/02/2006, you wrote:
> >If I do
> >SELECT A.barcode FROM shops A WHERE A.shop_id IN (1, 2);
> >I will get all barcodes from shops 1 and 2 but I don't want to get that.
> I
> >would like to know which barcodes from shop 1 are not in shop 2? I tought
> >that if I left join those two table with following
> >SELECT A.shop_id, A.barcode, B.shopId, B.barcode FROM shops A LEFT JOIN
> >shops B ON (A.barcode =
> >B.barcode) WHERE A.shop_id = 1 AND B.shop_id = 2;
> >I will get something like
> >1, 12345, 2, 12345
> >1, 34234, 2, null
>
> No, with a left join you will get
> 1, 12345, 2, 12345
> 1, 34234, null, null
>
> What are you actually getting? we should start from there.
>
> ^ heLen
>
>
>
>
> >Damir
>
>
>
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