MySQL計數帶大小寫返回錯誤計數

Question

我有以下問題：

我有mysql表：

continent,  
country,  
city,  
zip,  
street,  
status (int),  
reason (varchar, can be empty or some text),  
... (some other columns, not required for query)  

but with mapping of status int to text: 我想按來計數每種狀態的出現但要將狀態int映射到文本：

SELECT country,city,zip,street, 
   CASE WHEN (status = '2' AND reason <> '') THEN "BLOCKED" 
        WHEN (status = '2' AND reason='') THEN "DISPUTED"  
        WHEN status = '3' THEN 'EXPIRED' 
        WHEN status = '1' THEN 'ACTIVE' ELSE 'UNKNOWN' 
        END as status, 
    count(*) AS count
FROM people
where continent='Europe'
GROUP BY country,city,zip,street,status

我認為問題出在GROUP BY，但不確定-它不會返回正確的數據。

SQLFiddle （檢查Paris / Street2-它顯示3 DISPUTED，並且應該顯示1 BLOCKED和2 DISPUTED）

感謝您的意見。

Answer 1

我認為EngineerCoder 打算寫 ：

select country,city,zip,street, status, count(*) 
from
(
SELECT country,city,zip,street, 
   CASE WHEN (status = '2' AND reason <> '') THEN "BLOCKED" 
        WHEN (status = '2' AND reason='') THEN "DISPUTED"  
        WHEN status = '3' THEN 'EXPIRED' 
        WHEN status = '1' THEN 'ACTIVE' ELSE 'UNKNOWN' 
   END as status, 
FROM people
where continent='Europe'
) AS ilv
GROUP BY country,city,zip,street,status