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Tags [tag]
Exact "words here"
Author user:1234
user:me (yours)
Score score:3 (3+)
score:0 (none)
Answers answers:3 (3+)
answers:0 (none)
isaccepted:yes
hasaccepted:no
inquestion:1234
Views views:250
Sections title:apples
body:"apples oranges"
URL url:"*.example.com"
Favorites infavorites:mine
infavorites:1234
Status closed:yes
duplicate:no
migrated:no
wiki:no
Types is:question
is:answer
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Results tagged with Search options user 12916

Use this for problems that involve returning one or more rows from each group in a data set. Despite the name, this tag is suitable for *minimum-* and *maximum-* per group queries.

6
votes
You can use ROW_NUMBER() for this: SELECT a, b, c FROM ( SELECT a, b, c, ROW_NUMBER() OVER (PARTITION BY match_column ORDER BY d) AS rn FROM t WHERE match_column IN (1, 2, 3) ) AS x WHERE …
answered May 5 by Salman A