Hi gang
I have been scouring the internet trying to find a good, solid, visual
explanation of a left join. I "kind of" get it but I get confused.
If I could see a visual - I get confused by the on clause.
I have a database of articles. 1 table is the article itself.
Another is article categories, and the last is articles in categories
that records the article's ID and the category ID.
So I have a left join that someone else wrote that I'd desperately
like to understand that looks like this:
(first a query that pulls fields off the articles db and then the left
join:)
LEFT JOIN ArticlesInCategories ON
ArticlesInCategories.ArticleID = Articles.ArticleID WHERE
ArticlesInCategories.CategoryID=$CATID
(CatID comes in off a form)
The result is the article information in a listing that just covers
the queried category.
If someone can take me under their wing and help me to understand the
mysteries and wonder of the left join, I might have a fighting chance
at getting another year contract from one of my clients and have to
get a larger motorcycle helmet <g>.
Thanks in advance.
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