[ic] Cascaded query against multiple tables
Thu Jul 3 00:02:00 EDT 2003
* Mike Heins <email@example.com> [2003-07-02 10:32]:
> Quoting Interchange User (firstname.lastname@example.org):
> > Greetings,
> > IC 4.9.8 nightly, MySQL 4.1
> > I need to run a query against table1. Based on what I find there, I
> > need to take the results, and search with them against table2 and
> > table3.
> > Table1 has a list of authors, with an index into articles they have
> > written. I need to search the authors list for an author's name (via a
> > text input), then, once I have that information, I need to hit table2
> > and pull out all articles they have written, and table3, which contains
> > supplemental information on the articles (which I can do with a join).
> > I know I can do a join for the second query, but I don't know how to
> > access the results from the second part of the query as search criteria
> > using ITL. Does anyone have any examples of this?
> > In MySQL, I would first
> > select articleid from nc_authorarticle where authordisplay like
> > "%some_author's_name_here%";
> This is just a MySQL question. Here is a query example that works
> on the IC foundation demo with MySQL 4:
> select p.sku,p.price,p.description
> from products as p
> where p.sku in (
> select m.sku from merchandising as m
> where m.featured = 'specials'
Wow, I had no idea they added sub-queries in 4.1. That's great.
Dan Browning, Kavod Technologies, <email@example.com> 360.843.4074x217
6700 NE 162nd Ave, Ste 611-210, Vancouver, WA. Random Fortune:
Never explain. Your friends do not need it and your enemies will never
believe you anyway.
-- Elbert Hubbard
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