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Tagged with subquery greatest-n-per-group
3 questions with no upvoted or accepted answers
1
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0
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Return back only top N rows for each ID - SQL
I have written this SQL after browsing different topics. The topic I got the solution from -> Limit Records
MySQL version: 5.6
SELECT op.*
FROM (select op.*,
(@rn := if(@s = order_id, @...
- 11
1
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0
answers
43
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How to create subquery on multiple result columns?
I have two tables, both sharing the following columns:
table inventory: id, key, timestamp
table stocks: id, key, timestamp
I want to select all occurrences of the key from inventory table together ...
- 321
0
votes
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Improve MySQL query efficiency for first row in a group
I've written the query below in MySQL to get the top 10 top landing pages across all browser sessions.
Reading other similar posts about how to access the first row in a group, it seemed like the ...
- 101