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    <p>Consider this example...</p> <pre><code> DROP TABLE IF EXISTS comments; CREATE TABLE comments (comment_id INT NOT NULL AUTO_INCREMENT PRIMARY KEY ,comment VARCHAR(50) NOT NULL ,comment_date DATETIME ,parent_id INT NULL ); INSERT INTO comments VALUES (1 ,'Hello', '2013-03-01 10:10:10',NULL), (2 ,'Bonjour', '2013-03-02 10:10:10',NULL), (3 ,'How are you?', '2013-03-03 10:10:10',1), (4 ,'I\'m fine thank you, and you?', '2013-03-04 10:10:10',1), (5 ,'Ça va?', '2013-03-05 10:10:10',2), (6 ,'Je vais bien, merci, et toi?', '2013-03-06 10:10:10',2), (7 ,'Yes, not too bad thanks', '2013-03-07 10:10:10',1), (8 ,'Oui, comme ci comme ça.', '2013-03-08 10:10:10',2), (9 ,'Bon, à bientôt.', '2013-03-09 10:10:10',2), (10 ,'See you soon', '2013-03-10 10:10:10',1); SELECT * FROM comments x JOIN comments y ON y.parent_id = x.comment_id ORDER BY x.comment_date , y.comment_date; +------------+---------+---------------------+-----------+------------+------------------------------+---------------------+-----------+ | comment_id | comment | comment_date | parent_id | comment_id | comment | comment_date | parent_id | +------------+---------+---------------------+-----------+------------+------------------------------+---------------------+-----------+ | 1 | Hello | 2013-03-01 10:10:10 | NULL | 3 | How are you? | 2013-03-03 10:10:10 | 1 | | 1 | Hello | 2013-03-01 10:10:10 | NULL | 4 | I'm fine thank you, and you? | 2013-03-04 10:10:10 | 1 | | 1 | Hello | 2013-03-01 10:10:10 | NULL | 7 | Yes, not too bad thanks | 2013-03-07 10:10:10 | 1 | | 1 | Hello | 2013-03-01 10:10:10 | NULL | 10 | See you soon | 2013-03-10 10:10:10 | 1 | | 2 | Bonjour | 2013-03-02 10:10:10 | NULL | 5 | Ça va? | 2013-03-05 10:10:10 | 2 | | 2 | Bonjour | 2013-03-02 10:10:10 | NULL | 6 | Je vais bien, merci, et toi? | 2013-03-06 10:10:10 | 2 | | 2 | Bonjour | 2013-03-02 10:10:10 | NULL | 8 | Oui, comme ci comme ça. | 2013-03-08 10:10:10 | 2 | | 2 | Bonjour | 2013-03-02 10:10:10 | NULL | 9 | Bon, à bientôt. | 2013-03-09 10:10:10 | 2 | +------------+---------+---------------------+-----------+------------+------------------------------+---------------------+-----------+ </code></pre>
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    1. PONested comment system mysql ordering
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    1. USStrawberry
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    1. COi wouldn't be able to order by date because that would be too broad; on any given day there could be hundreds of comments posted. i'd rather keep it ordered by id(which it looks to be an easy mod to your query), so no matter when it was posted it will still be ordered correctly. And how would I go about paging these results(last segment of my original post)?
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    2. COAs per my example, date and time should be a single column, but if id works for you then that's fine too.
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    3. COOk. Any thoughts on the paging issue?
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