Mysql;數據總

Question

ID fileName userName 
1 abc1  Emre 
2 abc2  Abc 
3 abc2  John 
4 abc1  Rick 
5 abc1  Rick 

絲網印刷：

---

頂部下載的文件： 1） ABC1 2） ABC2

我想展現的淋漓盡致下載的文件。我怎樣才能做一個MySQL查詢？

（對不起，英）

Answer 1

獲得的聚集體通過COUNT()fileName分組。按下載次數降序排列，並根據您想返回的結果數量進行限制（如有必要）。

SELECT 
    fileName, 
    COUNT(*) AS downloads 
FROM yourtable 
GROUP BY fileName 
ORDER BY downloads DESC 
/* Optionally limit the number returned */ 
LIMIT 2; 

Answer 2

SELECT fileName, COUNT(*) AS DownloadCount 
    FROM YourTable 
    GROUP BY fileName 
    ORDER BY DownloadCount DESC; 

Answer 3

您可以通過在fileName

select fileName, count(1) as qty_dl 
    from your_table 
group by fileName 
order by qty_dl desc 

Answer 4

SELECT `fileName`, COUNT(`fileName`) AS `count` 
FROM `tableName` 
GROUP BY `fileName` 
ORDER BY `count` DESC 
LIMIT 2;