SQL Server Werte gruppiert in Spalten von Zeilen basierend auf bestimmten Feldwert zeigt

Question

Ich habe diese Tabelle mit Informationen

fk_studentID | fk_courseID | fk_educationalSemesterID | value 
-------------+-------------+--------------------------+------  
    1  |  1  |   1    | 18 
    1  |  2  |   1    | 18 
    1  |  3  |   1    | 14 
    1  |  4  |   1    | 17 
    1  |  5  |   1    | 14 
    1  |  6  |   1    | 17 
    1  |  8  |   1    | 18 
    1  |  1  |   2    | 19 
    1  |  2  |   2    | 19 
    1  |  3  |   2    | 18 
    1  |  4  |   2    | 15 
    1  |  4  |   2    | 19 
    1  |  5  |   2    | 20 
    1  |  1  |   3    | 17 
    1  |  8  |   3    | 20 

benötigen Ausgabeergebnis herzustellen, wie:

fk_studentID | fk_courseID | 1st Semester | 2nd Semester | 3rd Semester 
-------------+-------------+--------------+--------------+------------- 
    1  |  1  |  18  |  19  |  17 
    1  |  2  |  18  |  19  | 
    1  |  3  |  14  |  18  | 
    1  |  4  |  17  |  15  | 
    1  |  5  |  14  |  19  | 
    1  |  6  |  17  |    | 
    1  |  8  |  18  |  20  |  20 

Bitte helfen

Answer 1

Ich denke, dass Sie nur nach einer Standard-Pivot-Abfrage suchen:

SELECT fk_studentID, 
     fk_courseID, 
     MAX(CASE WHEN fk_educationalSemesterID = 1 THEN value END) AS 1st_semester, 
     MAX(CASE WHEN fk_educationalSemesterID = 2 THEN value END) AS 2nd_semester, 
     MAX(CASE WHEN fk_educationalSemesterID = 3 THEN value END) AS 3rd_semester 
FROM yourTable 
GROUP BY fk_studentID, 
     fk_courseID