On Sat, 20 Apr 2002, Julio Nobrega wrote:
I have maybe an easy to solve problem, but I haven't come with a logical
way to do it. I am builing a discussion site (a la Kuro5hin.org), and
there's a sql query to retrieve comments attached to an article. It grabs
their titles, along with some more informatio. What I want is to display the
comments and the replies below them. It's been implemented in thousands of
other scripts, but I can't figure out how to do with only one sql query
(even if it uses Joins). That's important, since I expect the site to be
very popular here in Brazil (let's hope!)
So, any advices about how to display the comments like this:
- Comment 1
- Comment 2
- Comment 3
Is greatly appreciated. I am thinking about storing all comments in an
array and construct the layout from there. But still, I don't know if it's
the best choice in performance terms.
Well, which database are you using? Oracle supports hierarchical queries
which are a pretty easy way to accomplish it with just SQL.
If your RDBMS doesn't support that, you're probably stuck doing a select
order by parent_id and then shuffling the resulting clusters around in
PHP. Use a 3D array (parent/id/content).
miguel
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