number of SQL on the mainpage with factor 10 and shortened the code with 4
lines. There is only *one* optimized SQL query left, being:
$result = db_query("SELECT stories.*, COUNT(comments.sid) AS comments FROM
stories LEFT JOIN comments ON stories.sid = comments.sid WHERE
stories.status = 1 AND stories.time <= $date GROUP BY stories.sid ORDER BY
stories.sid DESC LIMIT $number");
Note: we use a LEFT JOIN to retrieve the number of comments associated
with each story. By retrieving this data now, we elimate a *lot*
of individual queries that would otherwise be required inside the
while-loop. If there is no matching record for the right table in
the ON-part of the LEFT JOIN, a row with all columns set to NULL
is used for the right table. This is required, as not every story
has a counterpart in the comments table (at a given time).
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