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Questions - row-number

PostgreSQL row_number( ) window function starting counter from 1 for each change

Can't find a way to implement a specific row_number() function in Postgres. See the table below: table result I want from row_number to start counter from one for each difference like for items a and ...
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Alibek Galiyev

sql

postgresql

row-number

Votes: 0

Answers: 1

Latest Answer

demo:db<>fiddle It's the same problem, I discussed in detail here: Window functions: PARTITION BY one column after ORDER BY another You are trying to create partitions by two columns, but try to...
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S-Man

Use row_number() to take middle row in a set of records

previously I opened an issue asking how to take the first row in a set of records which were resolved brilliantly. Pitifully my customer changed his request a little after so this time I'm asking your...
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Stefano Buzzoni

sql

sql-server

median

row-number

Votes: 0

Answers: 1

Latest Answer

Edit: Updated to use a cte. Edit2: Updated to use a join rather than a sub-select to handle multiple castingIds Since ROW_NUMBER() is going to give us a continuous set of values, why not find MAX(RN),...
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Edward Radcliffe

ROW_NUMBER() in BQ always changes every time I rerun the query

I am using BQ and am using ROW_NUMBER to give my data an identifier. However, I found this issue where every time I rerun the query, the ROW_NUMBER would give me different outcome. In my database, I h...
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Iren Ramadhan

google-bigquery

row-number

Votes: 0

Answers: 1

Latest Answer

Turns out we shouldn't use number for ORDER BY in ROW_NUMBER() function. Instead of using number, I use the field name instead and it works the magic. The ROW_NUMBER() keeps giving me the same answer....
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Iren Ramadhan

ROW_NUMBER() &amp; RANK() - 2nd highest no of leaves- SQL Server

https://i.stack.imgur.com/FH0Z8.png I need help to write a SQL query to print the names of the employees that took the second-highest leaves. So I need to get the 2nd highest no of leaves (vacation le...
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Kalyan

sql

sql-server

rank

row-number

Votes: 0

Answers: 1

Latest Answer

Second highest... select * from ( SELECT S.BusinessEntityID, LEAVES, ROW_NUMBER() OVER(PARTITION BY LEAVES ORDER BY LEAVES) AS RN, DENSE_RANK() OVER(ORDER By LEAVES DESC) as DR FROM( ...
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Luuk

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