獲取日期

Question

期間條件分組的數據我有以下結構的表：

我想創建查詢這使我產生以下格式兩個日期範圍：

FROM  | TO  | DIALS_CNT | APPT_CNT | CONVERS_CNT | CANNOT_REACH_CNT | 
    2014-09-30 | 2014-10-06| 100   | 50  | 20   | 30   | 

FROM = Date from given to between range 
    TO = Date to given to between range 
    APPT_CNT = WHERE call.result = APPT 
    CONVERS_CNT = WHERE call.result = CONV_NO_APPT 
    CANNOT_REACH_CNT = WHERE call.result = CANNOT_REACH 

我試圖用內選擇具有計數和WHERE條件，但沒有運氣：

SELECT 
    dc.date, 
    (SELECT COUNT('APPT') FROM dialed_calls 
    WHERE dc.call_result = 'APPT') as APPT_CNT 
FROM dialed_calls AS dc 
GROUP BY dc.date 
WHERE dc.date BETWEEN '2014-09-30' AND '2014-10-06'; 

Answer 1

你的問題實在是不清楚。根據你的代碼，我想你有一個call_result列和一個日期列的呼叫細節表。

如果你想計算不同類型throught call_result，你可以用總和，而不是指望這樣的電話：

SELECT '2014-09-30' as from, 
     '2014-10-06' as to, 
     COUNT(*) AS DIALS_CNT, 
     SUM(CASE WHEN dc.call_result = 'APPT' THEN 1 ELSE 0 END) AS APPT_CNT, 
     SUM(CASE WHEN dc.call_result = 'CONV_NO_APPT' THEN 1 ELSE 0 END) AS CONVERS_CNT , 
     SUM(CASE WHEN dc.call_result = 'CANNOT_REACH' THEN 1 ELSE 0 END) AS CANNOT_REACH_CNT 
    FROM dialed_calls dc 
WHERE dc.date BETWEEN '2014-09-30' AND '2014-10-06' 

Answer 2

你所尋找的是一個BETWEEN聲明抓取適當的日期範圍和COUNT聚集列出你的計數。 Here是SQLite的有用運算符的列表，here是關於聚合的一些細節。

只需要小心地按照question所示正確列出日期範圍，SQLite就會挑剔它的日期格式。

----------------------------------編輯---------- -------------------------

嘗試此查詢：

SELECT dc.date, COUNT('APPT') 
FROM dialed_calls AS dc 
WHERE dc.date BETWEEN '2014-09-30' AND '2014-10-06' 
GROUP BY dc.date; 

Answer 3

這就好比your earlier question，但有兩列和BETWEEN：

SELECT zFrom AS "FROM", 
     zTo AS "TO", 
     (SELECT COUNT(*) 
     FROM MyTable 
     WHERE date BETWEEN zFrom AND zTo 
     ) AS Dials_Cnt, 
     (SELECT SUM(Call_Result = 'APPT') 
     FROM MyTable 
     WHERE date BETWEEN zFrom AND zTo 
     ) AS Appt_Cnt, 
     ... 
FROM (SELECT '2014-09-30' AS zFrom, '2014-10-06 9' AS zTo UNION ALL 
     SELECT '2014-10-07',   '2014-10-13 9'  UNION ALL 
     ...) 

在結束日期的附加9可確保時間與該日期相匹配。