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plurals

POmysql structure for comments and comment replies
primarykey
Id
1260878
data
AcceptedAnswerId
1279507
AnswerCount
6
ClosedDate
CommentCount
0
CommunityOwnedDate
CreationDate
2009-08-11T14:53:20.310
FavoriteCount
12
LastActivityDate
2009-09-18T21:49:03.823
LastEditDate
2009-08-11T22:18:24.413
LastEditorUserId
81976
OwnerUserId
81976
ParentId
0
PostTypeId
1
Score
9
ViewCount
8200
LastEditorDisplayName
text
Body
I've been thinking about this one for quite some time now, I need a way to add replies to comments in the database but I'm not sure how to proceed. This is my currently comment table (doesn't say much but its a start): <pre><code>CREATE TABLE IF NOT EXISTS `comments` ( `id` int(12) NOT NULL AUTO_INCREMENT, `comment` text, `user_id` int(12) DEFAULT NULL, `topic_id` int(12) NOT NULL, `ts` timestamp NOT NULL DEFAULT CURRENT_TIMESTAMP, PRIMARY KEY (`id`), KEY `user_id` (`user_id`), KEY `topic_id` (`topic_id`) ) ENGINE=InnoDB DEFAULT CHARSET=utf8 AUTO_INCREMENT=27 ; </code></pre> and here is my current query: <pre><code>SELECT c.id, c.comment, c.user_id, u.username, u.photo FROM (comments c) JOIN users u ON c.user_id = u.id WHERE c.topic_id = 9 </code></pre> One option would be to create a new table called "comment_replies" but I'm not sure If I'm able to select all the comments and comment replies in one query, and If I add a new column called "reply" I'm not sure how to sort them to get each comment with each reply. I would love to get some advice on how to deal with this. Edit: Following the below answers about adding parent_comment_id result in this kind of array from 1 comment and 2 replies: <pre><code>array(2) { [0]=> object(stdClass)#17 (7) { ["id"]=> string(2) "26" ["comment"]=> string(36) "adding a comment from the admin page" ["user_id"]=> string(2) "16" ["ts"]=> string(10) "1249869350" ["username"]=> string(5) "Admin" ["photo"]=> string(13) "gravatar2.png" ["reply"]=> string(23) "There is no admin page!" } [1]=> object(stdClass)#18 (7) { ["id"]=> string(2) "26" ["comment"]=> string(36) "adding a comment from the admin page" ["user_id"]=> string(2) "16" ["ts"]=> string(10) "1249869350" ["username"]=> string(5) "Admin" ["photo"]=> string(13) "gravatar2.png" ["reply"]=> string(13) "Yes there is!" } } </code></pre> How should I process this array to work with it, Is it possible to separate the comment from the replies?
Tags
<mysql><join>
Title
mysql structure for comments and comment replies
singulars
PostAcceptedAnswerId
1. PO
 singulars
 PostTypePostTypeId
 PTAnswer
PostParentId
1. This table or related slice is empty.
PostTypePostTypeId
1. PTQuestion
UserLastEditorUserId
1. USDennis
UserOwnerUserId
1. USDennis
plurals
PostLinksPostIdRelatedPostId
1. This table or related slice is empty.
PostLinksRelatedPostIdPostId
1. PL
 singulars
 LinkTypeLinkTypeId
 LTLinked
2. PL
 singulars
 LinkTypeLinkTypeId
 LTLinked
3. PL
 singulars
 LinkTypeLinkTypeId
 LTLinked
PostsAcceptedAnswerId
1. This table or related slice is empty.
PostsParentIdCreationDate
1. PO
 singulars
 PostTypePostTypeId
 PTAnswer
2. PO
 singulars
 PostTypePostTypeId
 PTAnswer
3. PO
 singulars
 PostTypePostTypeId
 PTAnswer
VotesPostIdCreationDate
CommentsPostId
1. This table or related slice is empty.

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