兩列中最常用的值SQL

Question

我試圖找出分組表中最常出現的值。 這是用於SQL

Part | location | PartDesc
-----+----------+-------------
A    | 2        | Part A
A    | 2        | Part A
A    | 2        | Part A
A    | 1        | Part A
A    | 1        | Part A
B    | 1        | Part B
B    | 2        | Part B

所以輸出需要顯示

Part | Location | PartDesc | Occurrence 
-----+----------+----------+--------------
A    | 2        | Part A   | 3
A    | 1        | Part A   | 2 
B    | 1        | Part B   | 1
B    | 2        | Part B   | 1

到目前為止，我有

Select Part, count(*) as occurrence
from table1
group by Part
order by count(*desc)

Answer 1

SELECT 
    Part,
    Location,
    PartDesc,
    COUNT(*) AS Occurrence
FROM
    table1
GROUP BY 
    Part,
    Location,
    PartDesc
ORDER BY 
    Occurrence DESC

謝謝。