C# order by after group by

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WebSep 15, 2024 · In a query expression, the orderby clause causes the returned sequence or subsequence (group) to be sorted in either ascending or descending order. Multiple … WebNov 29, 2024 · So we have a three-step LINQ query, where we group, and then sort each group, and then sort the groups. var results = data.GroupBy (x => x.Name) // group by name .Select (g => g.OrderBy (x => x.Time)); // sort each group .OrderBy (g => g.First ()) // sort the groups by best time .SelectMany (g => g); // flatten the groups

Taking advantage of the ordering guarantees of the LINQ …

WebJul 6, 2024 · The Group by clause is often used to arrange the identical duplicate data into groups with the select statement. This clause works with the select specific list of items, for that we can use HAVING, and ORDER BY clauses. Syntax SELECT Column1, Column2 FROM TableName GROUP BY Column1, Column2 Example Select * from … WebDec 26, 2013 · 2 Answers. Sorted by: 18. Try this: var product = from p in yourContext.Active_Details group p by p.PVersion into pgroup let count = pgroup.Count () orderby count select new { Count = count, PVersion = pgroup.Key }; SELECT count (ProductVersion), ProductVersion , ProductID , SubProductID FROM [do-not-delete … fitmore schaft

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Web1 hour ago · Bristol Crown Court. A Knowle West man who admitted trying to damage his neighbour's van has been jailed. And a judge advised him to live somewhere else. Bristol Crown Court heard there was bad ... WebJan 20, 2024 · Approach 1 select * from customer c1 where Total = ( select max (total) from customer c2 where c1.customer=c2.customer group by c2.customer ) order by total Approach 2 SELECT * FROM ( SELECT ROW_NUMBER () OVER (PARTITION BY customer ORDER BY total DESC) AS StRank, * FROM customer) n WHERE StRank = 1 Web.Select (group => group.OrderByDescending (student => student.Grade)) It also appears like you might want another flattening operation after that which will give you a sequence of students instead of a sequence of groups: .SelectMany (group => group) fitmoove

How to use order by, group by in c#? - tutorialspoint.com

LINQ Guide: Grouping and Aggregating Data Pluralsight

WebApr 22, 2024 · Group By Syntax – SELECT function_Name (column_1), column_2 FROM Table_Name WHERE condition GROUP BY column_1, column_2 ORDER BY column_1, column_2; function_Name: Name of the aggregate function, for example: SUM (), AVG (), COUNT () etc. Table_Name: Name of the table. Let’s see the difference between Order … Webvar reOrdered = (from x in list group x by x.groupCode into groups select groups) .OrderBy (i => from j in i select j.item) .SelectMany (i => i); but I get an error - "at least one object must IComparable", which puzzles me. Lastly, this must be C# in .Net3.5, no later. c# .net linq .net-3.5 Share Improve this question Follow can hydrogen act as cation in ionic saltsWebPassionate about football (soccer!), learning new languages, love to travel and have a huge bucket list of - places to visit all around the world and adrenaline-rushing adventures! On a ... can hydrogen act as a reducing agent

"WebIn query expression syntax, an orderby (Visual C#) or Order By (Visual Basic) clause translates to an invocation of OrderBy. See also OrderByDescending (IEnumerable, Func) OrderByDescending (IEnumerable, Func, IComparer) orderby clause (C# … " - C# order by after group by

C# order by after group by

ORDER BY before GROUP BY - MariaDB Knowledge Base

WebApr 7, 2024 · Innovation Insider Newsletter. Catch up on the latest tech innovations that are changing the world, including IoT, 5G, the latest about phones, security, smart cities, AI, robotics, and more. WebOct 14, 2024 · Trying to do an OrderBy after GroupBy with no success. Here's the existing code in my datacontext: public List> GetUpcomingMilestonesGrouped(int days) {return Milestones.Where(m => m.EndDate >= DateTime.Now && m.EndDate <= DateTime.Now.AddDays(days)).OrderBy(m => …

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WebSELECT * FROM table GROUP BY thread_id HAVING MAX (date) < 1555 ORDER BY date DESC. Your WHERE clause prevents the HAVING clause from seeing any dates from 1555 onwards, so the combination of the HAVING condition and the ORDER BY will pick thread 5 first again. Drop the WHERE clause (this time). WebJul 27, 2024 · As the GROUP BY article states, "If you select a non-grouped column or a value computed from a non-grouped column, it is undefined which row the returned value …

Web- Software and hardware installation, repair, and R&D of the semiconductor abatement system - Providing technical support for abatement systems at fabs, including hardware and software ... WebJul 27, 2024 · The easy SQL is: SELECT COUNT(name), name, info FROM tb_user GROUP BY name ORDER BY id; Tab1: But I need the LAST info!!! Tab2: I use this SQL: SELECT COUNT(name), name, info FROM (SELECT * FROM tb_user ORDER BY id DESC) as tb_temp GROUP BY name ; But that's don't work! All the same:

WebAug 8, 2016 · items.GroupBy (item => item.Order.Customer) .Select (group => new { Customer = group.Key, Items = group.ToList () }) .ToList () If you want to continue use the overload of GroupBy you are currently using, you can do: items.GroupBy (item => item.Order.Customer, (key, group) => new { Customer = key, Items = group.ToList () }) … WebNov 15, 2012 · If you're developing a production solution I would rather think how to avoid loading all the customers/invoices/etc at first place. If that's the case then please describe the use cases in which Customerinfo is going to be used, how do you get invoices/orders/payments collections, and is there a chance to leverage ORM …

WebApr 7, 2024 · Innovation Insider Newsletter. Catch up on the latest tech innovations that are changing the world, including IoT, 5G, the latest about phones, security, smart cities, …

WebAside from coding and leadership, I like to spend my free time with my girlfriend, playing guitar/singing in my band that I've started with my brothers, playing video games, writing songs/fiction ... fitmore hip stemWebSep 9, 2013 · Select specific columns for Linq group by. I have a nested ListView. Kinda like this one: var query = (from c in context.customer_order where c.id > 8000 group c by c.person_id into cgroup select new { cgroup.Key, Orders = cgroup }); I only want to load a few specific columns into the cgroup item. fitmore hip replacementWebJan 7, 2015 · You could apply the group by and order by after the union all: can hydro flask use coffeeWebThe Group By clause is used to group data based on the same value in a specific column. The ORDER BY clause, on the other hand, sorts the result and shows it in ascending or descending order. It is mandatory to use the aggregate function to use the Group By. On the other hand, it's not mandatory to use the aggregate function to use the Order By. fit-morning.plWebNov 29, 2024 · To do this, we use the group by statement: 1 from e in employees 2 group e by e.GroupCode.ToUpper().Substring(0, 2) into g 3 select new { Location, Total }; csharp. Here, we're taking the first two characters of the GroupCode property of the Employee object and grouping the set by that value into a group set we've designated as g .**. fit more peopleWebAdd a comment. 2. An alternative way to do this could be select distinct PersonId and group join with persons: var result = from id in persons.Select (x => x.PersonId).Distinct () join p2 in persons on id equals p2.PersonId into gr // apply group join here select new { PersonId = id, Cars = gr.Select (x => x.Car).ToList (), }; fit morningWeb10. Use select to get the FirstOrDefault (or First - because of the grouping you won't get a null) ordered descending: var data = mydata.GroupBy (item => item.Type) .Select (group => group.OrderByDescending (x => x.Date) .FirstOrDefault ()) .ToList (); Or SelectMany together with Take (1) can hydrogen become plasma