SQL由不同

Question

我有一個表搜索按順序選取組，欄目有：

id(int), title(nvarchar), count(int), expression(nvarchar) 

與價值觀：

1, aaa, 5, car 
2, aaa, 5, car poster 
3, bbb, 8, car magazine 
4, bbb, 8, car tv 
5, ccc, 12, boat 
6, ccc, 12 , boat tv 

我需要以下結果

4, bbb, 8, car tv 
3, bbb, 8, car magazine 
2, aaa, 5, car poster 
1, aaa, 5, car 

或更好的結果無論從4,3和2,1 這樣的：

3, bbb, 8, car magazine 
2, aaa, 5, car poster 

我嘗試這樣做：

SELECT title 
FROM 
    (SELECT * 
    FROM Search 
    ORDER BY count DESC) 
WHERE expression 
LIKE '%car%' 
GROUP BY title 

我也嘗試了DISTINCT

Answer 1

使用CTE與ROW_NUMBER功能與身份證一起遞減計數找到匹配的行，並責令其打破領帶。然後選擇每個分區（標題）中第一個編號的行。

WITH cteFindCar AS (
    SELECT id, title, count, expression, 
      ROW_NUMBER() OVER(PARTITION BY title ORDER BY count DESC, id) AS RowNum 
     FROM search 
     WHERE expression LIKE '%car%' 
) 
SELECT id, title, count, expression 
    FROM cteFindCar 
    WHERE RowNum = 1;