StackOverflow2013

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plurals

PO
primarykey
Id
18233359
data
AcceptedAnswerId
0
AnswerCount
0
ClosedDate
CommentCount
0
CommunityOwnedDate
CreationDate
2013-08-14T13:39:16.220
FavoriteCount
0
LastActivityDate
2013-08-14T21:45:58.700
LastEditDate
2013-08-14T21:45:58.700
LastEditorUserId
636182
OwnerUserId
636182
ParentId
18233090
PostTypeId
2
Score
2
ViewCount
0
LastEditorDisplayName
text
Body
<p>You can try a self join like this <a href="http://sqlfiddle.com/#!2/27977e/9" rel="nofollow">fiddle</a>:</p> <p>Just to expand on some other ways you can use this, I've updated the original fiddle to <a href="http://sqlfiddle.com/#!2/be68a/3" rel="nofollow">this</a>. Also, I added an extra datapoint for user 4 to show what happened with duplicates.</p> <ul> <li>To get the data for one user (original query):</li> </ul> <pre class="lang-sql prettyprint-override"><code>SELECT c1.* FROM completedscenarios c1 LEFT JOIN completedscenarios c2 ON c1.user_id = c2.user_id AND c1.game = c2.game AND c1.CompletePercentage < c2.completePercentage WHERE c1.user_id = 1 and c2.user_id is null; </code></pre> <ul> <li>To get all users and their best scores per game</li> </ul> <pre class="lang-sql prettyprint-override"><code>SELECT c1.user_id, c1.game, c1.CompletePercentage FROM completedscenarios c1 LEFT JOIN completedscenarios c2 ON c1.user_id = c2.user_id AND c1.game = c2.game AND c1.CompletePercentage < c2.completePercentage WHERE c2.user_id is null ORDER BY c1.user_id, c1.CompletePercentage; </code></pre> <ul> <li>To get all games and the highest percentages no matter what user</li> </ul> <pre class="lang-sql prettyprint-override"><code>SELECT c1.game, c1.user_id, c1.CompletePercentage FROM completedscenarios c1 LEFT JOIN completedscenarios c2 ON c1.game = c2.game AND c1.CompletePercentage < c2.completePercentage WHERE c2.game is null ORDER BY c1.game, c1.CompletePercentage; </code></pre> <ul> <li>To get users and their best overall game</li> </ul> <pre class="lang-sql prettyprint-override"><code>SELECT c1.user_id, c1.game, c1.CompletePercentage FROM completedscenarios c1 LEFT JOIN completedscenarios c2 ON c1.user_id = c2.user_id AND c1.CompletePercentage < c2.completePercentage WHERE c2.user_id is null ORDER BY c1.user_id, c1.CompletePercentage; </code></pre> <ul> <li>And here is a copy of the results </li> </ul> <pre class="lang-sql prettyprint-override"><code>USER_ID | GAME | COMPLETEPERCENTAGE ------------------------------------ 1 | name1 | 90 1 | name4 | 80 1 | name3 | 70 </code></pre> <pre><code>USER_ID | GAME | COMPLETEPERCENTAGE ------------------------------------ 1 | name3 | 70 1 | name4 | 80 1 | name1 | 90 2 | name2 | 70 3 | name4 | 100 4 | name1 | 50 4 | name2 | 70 </code></pre> <pre><code>GAME | USER_ID | COMPLETEPERCENTAGE ------------------------------------ name1 | 1 | 90 name2 | 2 | 70 name2 | 4 | 70 name3 | 1 | 70 name4 | 3 | 100 </code></pre> <pre><code>USER_ID | GAME | COMPLETEPERCENTAGE ------------------------------------ 1 | name1 | 90 2 | name2 | 70 3 | name4 | 100 4 | name2 | 70 </code></pre>
Tags
Title
singulars
PostAcceptedAnswerId
1. This table or related slice is empty.
PostParentId
1. POselect the records with the highest amount
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  PostTypePostTypeId
  PTQuestion
PostTypePostTypeId
1. PTAnswer
UserLastEditorUserId
1. USxecaps12
UserOwnerUserId
1. USxecaps12
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PostLinksPostIdRelatedPostId
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PostLinksRelatedPostIdPostId
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PostsAcceptedAnswerId
1. This table or related slice is empty.
PostsParentIdCreationDate
1. This table or related slice is empty.
VotesPostIdCreationDate
1. VO
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  PO
  UserUserId
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  VoteTypeVoteTypeId
  VTUpMod
2. VO
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  VoteTypeVoteTypeId
  VTUpMod
CommentsPostId
1. This table or related slice is empty.

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