Kombinieren mehrerer Felder in ein Textfeld in SQL Server

Question

Also ich habe eine Tabelle, die wie folgt aussieht:

Name                 ID           TaskID           HoursAssigned
----------------------------------------------------------------
John Smith           4592         A01              40
Matthew Jones        2863         A01              20
Jake Adams           1182         A01              100
Matthew Jones        2863         A02              50
Jake Adams           2863         A02              10

und ich möchte einen Datensatz zurückzugeben, die wie folgt aussieht:

TaskID               PeopleAssigned
------------------------------------------------------------
A01                  Jake Adams, John Smith, Matthew Jones
A02                  Matthew Jones, Jake Adams

Das Problem hier ist, dass ich keine Ahnung hätte, wie viele Menschen zu einer bestimmten Aufgabe zugeordnet sind. Irgendwelche Vorschläge wäre toll!

Answer 1

Diese Frage gestellt wird täglich hier. Hier von gestern. Und eine andere

https://stackoverflow.com/questions/tagged/sql+string-concatenation

Answer 2

AUSPROBIEREN:

declare @table table (name varchar(30), ID int, TaskID char(3), HoursAssigned int)

insert into @table values ('John Smith'   ,4592 ,'A01'  ,40)
insert into @table values ('Matthew Jones',2863 ,'A01'  ,20)
insert into @table values ('Jake Adams'   ,1182 ,'A01'  ,100)
insert into @table values ('Matthew Jones',2863 ,'A02'  ,50)
insert into @table values ('Jake Adams'   ,2863 ,'A02'  ,10)

--formatted so you can see what is happening
SELECT DISTINCT
    t1.TaskID
       ,SUBSTRING(
                  replace(
                          replace(
                                  (SELECT
                                       t2.Name
                                       FROM @Table AS t2
                                       WHERE t1.TaskID=t2.TaskID
                                       ORDER BY t2.Name
                                       FOR XML PATH(''))
                                 ,'</NAME>','')
                         ,'<NAME>',', ')
                 ,3,2000)  AS PeopleAssigned
    FROM @table AS t1

AUF DER GRUNDLAGE VON GESTERN ANTWORT!

Hier ist die Ausgabe:

(1 row(s) affected)

(1 row(s) affected)

(1 row(s) affected)

(1 row(s) affected)

(1 row(s) affected)
TaskID PeopleAssigned
------ --------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------
A01    Jake Adams, John Smith, Matthew Jones
A02    Jake Adams, Matthew Jones

(2 row(s) affected)

Answer 3

BTW, ist es eine schlechte Idee zum Speichern von Namen in einem Feld. Macht es sehr schwer abzufragen. Wie würden Sie effektiv für „Smith“ suchen withouth Platzhalter als erstes Zeichen verwendet, die von der Nutzung der Indizes der Datenbank ausschließt. Und wenn Namen Freiform wie diese gespeichert sind, könnte eine Person „John Smith“, „Smith, John“, „Smith, John“ „Smith, John“ usw. sein und Sie würden nicht erkennen, dass sie die gleiche Person waren. Sie sollten bei einem Minimum haben first_name, middle_name, last_name, personal_Suffix und dann können Sie möglicherweise ein calulated Feld haben, die den vollständigen Namen im Format zeigen Sie angezeigt werden sollen.

Answer 4

Ich bin neu in SQL und neu zu Stackoverflow, aber würde das nicht?

SELECT taskid, name FROM Tabelle GROUP BY taskid