Questions tagged [rank]
The rank tag has no usage guidance.
59
questions
0
votes
1answer
18 views
Normalization using DENSE_RANK and LAST_INSERT_ID
db-fiddle
I have created a table called orders (orderId, customersId) and a table called orderDetails (orderId, productId). My goal is to denormalize a table called temp which is like
scanId, ...
1
vote
1answer
95 views
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 ...
6
votes
3answers
393 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,...
0
votes
1answer
33 views
Creating a table with Rank ordering in Oracle [closed]
I am trying to create a table in Oracle as follow:
create table hops.t_distribution AS
(select
UID,
CONTACT_EMAIL,
PRODUCT_ID,
rank() over(Partition by UID order by to_number(PRODUCT_ID)) as ...
1
vote
2answers
52 views
Find the greatest difference between each unique record with different timestamps
I have a PostgreSQL table with the following schema and data:
CREATE TABLE IF NOT EXISTS T(
id uuid PRIMARY KEY,
username varchar(15),
person varchar(10),
tweets int,
...
0
votes
1answer
186 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 ...
0
votes
1answer
150 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 ...
0
votes
0answers
19 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(...
0
votes
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 ...
1
vote
1answer
71 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, ...
0
votes
0answers
28 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.
...
1
vote
1answer
27 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 ...
0
votes
2answers
26 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 | ...
0
votes
2answers
615 views
Postgres Slow ROW_NUMBER() function
I have created the following table in postgres.
test=# \d leaderboard_scores;
Table "public.leaderboard_scores"
Column | Type | ...
35
votes
9answers
139k views
Get the rank of a user in a score table
I have a very simple MySQL table where I save highscores. It looks like that:
Id Name Score
So far so good. The question is: How do I get what's a users rank?
For example, I have a users ...
0
votes
1answer
33 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.
23
votes
4answers
54k views
Limit results to the first 2 ranking rows
In SQL Server 2008, I am using RANK() OVER (PARTITION BY Col2 ORDER BY Col3 DESC) to return data set with RANK. But I have hundreds of records for each partition, so I will get values from rank 1, 2, ...
1
vote
1answer
103 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 ...
0
votes
1answer
93 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 ...
1
vote
2answers
187 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):
+---------+---------+------------+-------------+-------+-------+
| ...
1
vote
1answer
340 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'...
0
votes
0answers
69 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 ...
0
votes
0answers
97 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 ...
2
votes
1answer
308 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 ...
1
vote
0answers
42 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
votes
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
votes
1answer
6k 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?
4
votes
2answers
10k 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 ...
0
votes
1answer
123 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 ...
0
votes
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....
-2
votes
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
vote
1answer
367 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 |...
4
votes
1answer
6k 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 ...
5
votes
1answer
1k 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 ...
8
votes
1answer
7k 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 ...
3
votes
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 ...
a_horse_with_no_name
60.4k12 gold badges115 silver badges150 bronze badges
2
votes
1answer
472 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
vote
1answer
637 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 |
+...
2
votes
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 ...
Erwin Brandstetter
126k16 gold badges290 silver badges430 bronze badges
0
votes
1answer
372 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
votes
2answers
819 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 ...
2
votes
1answer
11k 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
votes
1answer
170 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
votes
2answers
337 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, ...
3
votes
3answers
1k 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 ...
1
vote
1answer
132 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
votes
1answer
85 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
votes
1answer
387 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
vote
1answer
740 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
vote
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 ...
