> Alternatively, what if I delete a category. Again, I'd have to
> retrieve every item, iterate through each list, delete any
> entries for that category, then save that item.
Actually, if you don't re-use the numbers, you could leave the redundant
numbers in the denormalised list, as it could ne
> If all you want is a comma seperated list of the categories
> for each item. Why not just add a "categories" field to the
> item table? Store the comma seperated list there.
Because that would be denormalization of the data, which in a transaction
processing system is VERY VERY BAD. That's why
<[EMAIL PROTECTED]>
Subject: Re:
> > Right, I'm not gonna address the whole thing (no time at the
> moment), but
> a
> > quick word about sub-queries
> >
> > They should be used in 2 ways - one to return a single result;
> > select * from myTable where myValue=(select myValue from myOtherTable
> > where...)
> >
> > Or to return m
Doh, I forgot to add all the where clauses in that last sql thing, but you
get the idea
where t1.itemid = t2.itemid
andt1.itemid = 1
Deanna Schneider
Interactive Media Developer
UWEX Cooperative Extension Electronic Publishing Gro
Couldn't you accomplish this with a group function?
i.e.
#name# - #description# #categoryid#
I obviously can't test this, and I'm not sure this is exactly what you want,
but have you tried something like this?
d
Deanna Sch
MAIL PROTECTED]>
To: <[EMAIL PROTECTED]>
Sent: Wednesday, June 21, 2000 12:11 AM
Subject: Need help with a SQL query
> Sorry about the non-descriptive subject, but I'm tired and really couldn't
> think of a way to describe my question in one line .
>
> I have a dat
> Right, I'm not gonna address the whole thing (no time at the moment), but
a
> quick word about sub-queries
>
> They should be used in 2 ways - one to return a single result;
> select * from myTable where myValue=(select myValue from myOtherTable
> where...)
>
> Or to return multiple values
> sel
> Sorry about the non-descriptive subject, but I'm tired and really couldn't
> think of a way to describe my question in one line .
>
> I have a database table of product information and a database table of
> product category information. Each product may exist in more than one
> category, so I c
Sorry about the non-descriptive subject, but I'm tired and really couldn't
think of a way to describe my question in one line .
I have a database table of product information and a database table of
product category information. Each product may exist in more than one
category, so I created a "m
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