Questions tagged [rank]

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Substitute DISTINCT ON for query transformation (Postgresql to Redshift)

I need to transform my Postgresql query to Redshift and I working with the following data, here is an excerpt: In my final output, I would like only to keep rows with the highest rank (in green). And ...
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0answers
18 views

Using rank in postgresql

With this query in postgresql WITH ExtractedPosition AS ( SELECT P.rider_id, P.start_date, P.day_index, P.start_hour, P.end_hour, extract(...
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1answer
51 views

Implementation of DENSE_RANK

I am trying to implement the DENSE_RANK function of SQL Server using only basic SQL functions. I managed to implement the RANK function but I don't know how extend it to DENSE_RANK. More specifically, ...
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26 views

Ranking of athletes by top scored points

I want to rank athletes by their total points over a specific amount of scores. In my database an athlete can have as many results from competitions as he wants which will be assigned points. ...
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1answer
26 views

How can I group together rankings by number of users?

I have a table which includes the following: ID evar event_date ranking 1 landing 2019-01-01 1 1 content 2019-01-02 2 1 homepage 2019-01-03 3 2 ...
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2answers
25 views

MYSQL Calculate ranking of row that is not yet inserted

I've got a table similar to this data: | id | username | value | |-----------|----------|-------| | 1 | bob | 46 | | 483 | alice | 90 | | 176 | sue | ...
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2answers
282 views

Postgres Slow ROW_NUMBER() function

I have created the following table in postgres. test=# \d leaderboard_scores; Table "public.leaderboard_scores" Column | Type | ...
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1answer
31 views

Help me to RANK correctly in Access

I have such a table: I want to rank the people, as who has the more V1 and the less V2, V3, V4, V5 be on top. Please advise me SQL code for MS-ACCESS.
5
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3answers
332 views

A more intelligent ntile

When using the ntile() window function, the major issue is that it arbitrarily groups into roughly equal parts regardless of the actual value. For example with the following query: select id,...
1
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1answer
87 views

Overlaps and Gap grouping in SQL Server

I am trying to find gaps in my data and then group those. The table I am working with looks like this: runid|year |road|start |end 01010| 9 |2 |0.000 |0.585 01100| 9 |2 |0.585 ...
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1answer
129 views

Fetch 10 paginated ranked posts of each category

Posts table as p: | id | cid | score | ... -------------------- | 1 | 1 | 3 | ... Categories Table as c: | id |... -------------------- | 1 |... What i need? Reterive paginated ranked ...
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1answer
56 views

Rank using one column. If it is the same value in 2 rows rank using another column

i have a table as table1 id| hits | time -------+--------+------ 1 | 9 | 40.89 2 | 5 | 33.21 3 | 5 | 78.31 4 | 1 | 71.93 5 | 4 | 23.10 6 | 4 | 99.99 7 | 8 ...
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2answers
130 views

User rank based on cumulative rows

UPDATE: Full table schema and data: https://www.db-fiddle.com/f/jT3Mfwd1BJ8GrsBxxPDC8M/1 Table structure (some fields are hidden): +---------+---------+------------+-------------+-------+-------+ | ...
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1answer
278 views

Get Rank based per row of a student score on a subject in sql server

l have a sample data // USE [master] GO /****** Object: Database [dbTest] Script Date: 2019/03/01 12:20:40 ******/ CREATE DATABASE [dbTest] CONTAINMENT = NONE ON PRIMARY ( NAME = N'...
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0answers
40 views

How to rank mysql with groupby

Guy I am trying to ranking some data from my database, and I notice that it's going very wrong when I put the group by clause; SET @rank=0; SELECT @rank:=@rank+1 AS RankSemGenero ,a.nome AS ...
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0answers
90 views

Rank users by different periods and overall

I'm trying to create a ranking system for a game which should have 2 different rankings. Below you will find the Model (or the result after querying the database) which should be presented to the ...
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0answers
39 views

Exclusive and Inclusive ranking queries in Postgres 9.6

I'm trying to build a filtering/ranking search that would let me order and optionally filter out people based on a 1-to-many relationship with job "focuses". The tables are shown at the bottom. A "...
2
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1answer
5k views

how to get rank number that group by a column [duplicate]

I spend hours trying to solve this, but I can't. Well, I simply have a table call invoices I have data like this I want to know each customer rank by their total sum How can I archive this?
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2answers
9k views

How to get latest 2 records of each group

So, I have table similar to: sn color value 1 red 4 2 red 8 3 green 5 4 red 2 5 green 4 6 green 3 Now I need the latest 2 rows for each color, eg: 2 red 8 4 red 2 5 green 4 6 ...
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1answer
110 views

how to flatten child tables into parent

I have inherited a db, and I need to transform an existing parent-child relationship into all parents. Let me first explain the existing data.The tables have a structure something like: Thing ...
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1answer
3k views

How to find Rank of row in MySQL

I am new to MySQL. I know that ROW_NUMBER() OVER (PARTITION) will not work in MySQL. I want to convert the code from SQL Server to MySQL: SELECT *, ROW_NUMBER() OVER ( Partition By X....
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1answer
55 views

Finding a records Rank in Database SQL Server 2016

So I need to find an individual rank for a record I have these results EmpTot, JOIN_NUMBER, RANKRESULT, STATE 524, 21056, 1, WI 523, 20973, 2, WI 477, 21411, 3, WI 460, 20714, 4, WI 394, 20974, 5, ...
1
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1answer
358 views

Get the rank of a fruit after ordering

I have the following table, called sales +--------+--------+ | fruit | amount | +--------+--------+ | cherry | 124 | | plum | 23 | | pear | 19 | | apple | 13 | | banana | 4 |...
6
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1answer
6k views

Solving “Gaps and Islands” with row_number() and dense_rank()?

How does one solve the islands part of gaps-and-islands with dense_rank() and row_number(). I've seen this now a few times and I'm wondering if someone could explain it, Let's use something like this ...
5
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1answer
908 views

Understand why rank() over doesn't fit to don't select duplicates rows

I would like to understand why I have different results I have a table called active_transfert where I log image transfert user_id | image_id | created_at --------|----------|----------- 1 |1 ...
2
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1answer
401 views

Using RANK function, how can I return the rank of one record vs the entire table?

I have the following info in my database: +-----------------------+-------------+ | USERNAME TRUST | | +-----------------------+-------------+ | DeaDTerra | 390 ...
1
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1answer
579 views

Get user rank handling equal scores

Imagine there is a table with users logins and their scores: +----+-------+-------+ | id | login | score | +----+-------+-------+ | 1 | log1 | 4 | +----+-------+-------+ | 2 | log2 | 4 | +...
3
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2answers
1k views

Rank vs. Distinct

Just for curiosity, if I have to use rank to tag distinct values for some columns only, and ignore whatever different values occurred on other columns, why not use distinct and just remove the other ...
2
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1answer
2k views

Percentile rank that takes sorted argument (or same functionality) in PostgreSQL 9.3.5

How do I calculate the percentile of the nth element in a field relative to the ones previous to it in a time series for each subset (partition) of my data? For example, this is exactly what I want ...
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1answer
320 views

SQL Full Text Search - Result Order changing

I am using Full Search text to implement search functionality. Basically I will have to do search on all the columns with the search string. Search string will have combination of values from ...
0
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2answers
787 views

Rank rows using weighted average with multiple sub queries

So what I want to do, is to rank students based on their weighted average which will be calculated by separating the grades based on the type (whether "exam" or "not exam). The average for both will ...
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2answers
3k views

Rank students based on their average in MySQL

I have been researching and trying various queries to get this to work. What I want to happen is to rank each student based on their average which will be calculated by using AVG(grade) and this will ...
2
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3answers
1k views

PERCENT_RANK does not distribute over 100

I'm trying to find out the position of each given record of a query in 0-100 scale. I use PERCENT_RANK ranking function this way: select Term, Frequency, percent_rank() over (order by Frequency desc) ...
2
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1answer
10k views

How to set rank per group with a SQL UPDATE statement?

Please first refer to the table structure: Now you could see there is one unique constraint including manager_code, archive_year and archive_day_of_year. I need to rank the managers for every group ...
3
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1answer
139 views

Adding an ID column based on two other columns

I have a query which returns output as follows: [Location] [Reference] [Year] [Int1] [Int2] England 1 2015 13 201 England 1 2015 12 57 England ...
3
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2answers
313 views

MySql - Ranking so it only needs to be done once

By reading around, this seems to be a reasonable way of ranking people. The table: UserId (int primary key) Name (varchar(100)) Score1 (int highest scores rank 1) Score2 (int, if Score1s are equal, ...
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1answer
146 views

Create a temp table that consolidates start and end dates plus generates a uniqueid for each consolidated record

I have a table called projecthistory, it is actually a view so I could take advantage of the Rank function to get a unique record number. From this view I need to create a temp table that has a ...
1
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1answer
131 views

How to get overall rank based on data regardless of scope (all items, user specific, etc.)?

Table schemas: servers - id - user_id - game_id - slug ... server_votes - id - server_id - ip_address - created_at ... So, I have a two tables: servers and server_votes, and I want to get the ...
0
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1answer
84 views

Add ranking to query output

I'm new at programming with PHP/mySQL and I have got a little problem here. This is how my code looks like: SELECT COUNT(*) AS Number , Name FROM table GROUP BY Name ORDER BY Number DESC ...
2
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1answer
373 views

Display equal ranking if count is the same

I am trying to figure out how to display ranking correctly where if multiple authors have the same article count then they get the same ranking and then the ranking resume at the correct spot. For ...
1
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1answer
685 views

mysql logical ranking based on score

I have a table like this that keeps a total score of a history exam for students. +----+---------------+-------+---------+- | id | name | history | rank | +----+---------------+-------+--...
1
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1answer
54 views

Recording history of ranks

Once per day, this is being executed to rank everyone in the database based on points. SET @r=0; UPDATE ranks SET previousRank=rank, rank= @r:= (@r+1) ORDER BY points DESC; The field ...
2
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1answer
213 views

Row_Num Partition in WHERE clause

I've successfully added a ROW_NUMBER() function to my SELECT statement, but I get an "invalid column name" error when I try to reference the column I generated with the ROW_NUMBER() function in my ...
2
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1answer
5k views

How to group data and write it's group id for each row?

I have sample data: CREATE TABLE #T (Name varchar(5), GroupId int NULL) INSERT INTO #T (Name) VALUES ('A'), ('A'), ('A'), ('B'), ('B'), ('C'), ('D'), ('D') Name GroupId ----- ----------- A ...
2
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0answers
22 views

Sum of points and rank according to points with join three tables [duplicate]

I am creating a game where I am calculating the user points on the basis of user activities. Everything working fine I got the sum of points and on the basis of points I calculated the rank. I have ...
3
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3answers
976 views

Sum of points and rank according to points

I am creating a game where I am calculating the user points on the basis of user activities. Everything is working fine - I got the sum of points and on the basis of points I calculated the rank. I ...
2
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1answer
475 views

How does RANK() work in this query? [closed]

I want to delete duplicate rows from a table. I have searched for the query online, and found the following sample: DELETE FROM dbo.LeadsContacts WHERE Sr_No IN ( SELECT Sr_No FROM ( ...
3
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2answers
828 views

How do I rank the total score in order of positions

How do I rank the total_score such that the highest total score has position 1, etc. If 2 or more have the same total score, then they should have the same position CREATE TABLE `scores` ( `id` int(...
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1answer
1k views

Best way to rank all the columns in a table and store those ranks in another table

I have SQL Server 2008 and a table w/ hundreds of thousands of records and about 50 columns. I run a sql statement like: Select rank() over(order by col1 desc) as Col1Rank, rank() over(order by ...
0
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1answer
840 views

Rank function creating duplicate partitions? (two rank 1's for the same key)

The below query is outputting two rows. Given that I am partitioning on ref_number and also have ref_number in the where clause, I believe I should only ever get a single row back. WITH rank_cte AS (...