group-by

问题 I have query like this, and i shows me sort of good results select vup.UgovorId, count(P.Naziv) as BROJNAZIVA from [TEST_Ugovori_Prod].dbo.VezaUgovorPartner as vup inner join [TEST_MaticniPodaci2].[dbo].[Partner] as p on vup.PartnerId = p.PartnerID group by vup.UgovorId Results are like this (first row is vup.UgovorId, second is p.Naziv): 1264 1 1265 3 But I want to show all p.Naziv when that row has more then one for that vup.UgovorId like string so I would be like this: 1264 "Mark" 1265

问题 I have a dataframe that I want to find the minimum value of a column within a group, and then based on that row, update the values of some of the other columns. The following code does what I want: import pandas as pd df = pd.DataFrame({'ID': [1,1,1,2,2,2,], 'Albedo': [0.2, 0.4, 0.5, 0.3, 0.5, 0.1], 'Temp' : [20, 30, 15, 40, 10, 5], 'Precip': [200, 100, 150, 60, 110, 45], 'Year': [1950, 2000, 2004, 1999, 1976, 1916]}) #cols to replace values for cols = ['Temp', 'Precip', 'Year'] final = pd

问题 I'm working on a rails app for my expenses. I have 3 models like : user, spending and currency. I can create a spending via form, I have a title, description, amount, currency_id, user_id. All the relations are made and working. I use my show.html.erb from the user controller to display all the expenses from the current_user. That works fine. I then I grouped the expenses together and sort them by date. I did actually 2 groups, the first one which is today and the rest. So on the display it

问题 This is pretty complicated for a person just learning Linq! I asked how to JOIN and GROUP BY in this question and a BIG SHOUT OUT to TriV for his explicit and very helpful answer. Now, I want to take my already very complicated query and create a UNION to a similar query. I have below, 2 separate SQL queries that I have put into 1 query using a UNION clause. The first query joins two tables. But the second query is against only one table, because it is for unassigned assets that are not

问题 I'm trying to return a count for the total number of records in the table HISTORY grouped by their quarter and year. Currently I have: SELECT DISTINCT (CAST(DATEPART(year, CREATE_DATE) AS char) + ' Qtr' + CAST(DATEPART(quarter, CREATE_DATE) AS char)) AS Period, COUNT(ID) FROM HISTORY GROUP BY CREATE_DATE ORDER BY Period; But I'm getting duplicate rows with the same quarter and year. I'm also getting a total of records counted that's lower than the total records in the table. Here's a sample

问题 I have table orders (order_id, order_processed_date) . I want the count of orders per month for last 12 months. If any month has 0 orders, then it should print 0. Something like this: Total Orders | Month ----------------------- 2 | OCT 2018 3 | SEP 2018 0 | AUG 2018 0 | JUL 2018 1 | JUN 2018 0 | MAY 2018 0 | APR 2018 0 | MAR 2018 5 | FEB 2018 5 | JAN 2018 0 | DEC 2017 0 | NOV 2017 I already searched in this website and get some queries but did not find exact solution for this. I get result

问题 I have a dataframe that looks something like this: df Name date season binary Apple 2016-04-24 MAM 1 Banana 2016-05-01 MAM 1 Berry 2016-05-01 MAM 1 Berry 2017-11-05 OND 1 Orange 2016-11-27 OND 1 Kiwi 2017-03-27 MAM 1 And I have a long date time object of a bunch of dates like this: df1 date season Week 2016-03-28 MAM 13 2016-04-04 MAM 14 2016-04-11 MAM 15 2016-04-18 MAM 16 2016-04-25 MAM 17 2016-05-02 MAM 18 2016-05-09 MAM 19 2016-05-16 MAM 20 2016-05-23 MAM 21 2016-05-30 MAM 22 2016-06-06

问题 I need to sum only the 5 best scores for each player from 11 events. The query below creates a leaderboard which sums all the scores but I'm stuck as to how i can only sum the 5 best scores. I've abbreviated the query to show only 4 events and getting best 3 results to shorten the post, but hope it gets across, what I need. SELECT playerID AS Player, SUM(CASE WHEN championshipleaderboard.eventID = 1 THEN championshipleaderboard.points ELSE 0 END) AS Event1, SUM(CASE WHEN

问题 I have this table: CREATE TABLE yourtable ( HevEvenementID INT, HjvNumeSequJour INT, HteTypeEvenID INT ); INSERT INTO yourtable VALUES (12074, 1, 66), (12074, 2, 66), (12074, 3, 5), (12074, 4, 7), (12074, 5, 17), (12074, 6, 17), (12074, 7, 17), (12074, 8, 17), (12074, 9, 17), (12074, 10, 5) I need to group by consecutive HteTypeEvenID . Right now I am doing this: SELECT HevEvenementID, MAX(HjvNumeSequJour) AS HjvNumeSequJour, HteTypeEvenID FROM (SELECT HevEvenementID, HjvNumeSequJour,

问题 I have following sample data, I want to get min and max time of every consecutive status. cat subcat status logtime fruits apple 0 30-10-2017 06:00 fruits apple 0 30-10-2017 06:03 fruits apple 0 30-10-2017 06:06 fruits apple 0 30-10-2017 06:09 fruits apple 0 30-10-2017 06:12 fruits apple 0 30-10-2017 06:15 fruits apple 0 30-10-2017 06:18 fruits apple 0 30-10-2017 06:21 fruits apple 0 30-10-2017 06:24 fruits apple 0 30-10-2017 06:27 fruits apple 0 30-10-2017 06:30 fruits apple 0 30-10-2017 06