Mysql的嵌套計數

Question

我有3個表彼此連接

預訂>出價（booking_id）> bid_participants（bid_id）

所以創建預訂時，它將被噴砂和接收到大於0人或根本

收到什麼，我想要實現計數預訂，如果它超過0人接收，並認爲這是1

像

SELECT 
    COUNT(b.id) as booking_count, 
    COUNT(if(COUNT(bip.bid_status) > 0, 1, 0)) as bid_received_count // this part 
    DATE(b.date_created) AS daily_booking 
FROM booking AS b 
JOIN booking_route AS br on b.id = br.booking_id 
JOIN bid AS bi on b.id = bi.booking_id 
JOIN bid_participant AS bip on bi.id = bip.bid_id 
WHERE 
DATE(b.date_created) BETWEEN '2015-06-04' AND '2015-06-10' 
AND br.service_type = 1 
AND bip.bid_status = 1 
GROUP BY daily_booking; 

這是隻要我能得到

SELECT 
    COUNT(b.id) AS total_booking, 
    COUNT(CASE WHEN bip.bid_status > 0 THEN 1 END) AS bid_received_count, 
    br.service_type, 
    DATE(b.date_created) AS daily_booking 
FROM booking AS b 
JOIN booking_route AS br on b.id = br.booking_id 
JOIN bid AS bi on b.id = bi.booking_id 
JOIN bid_participant AS bip on bi.id = bip.bid_id 
WHERE 
DATE(b.date_created) BETWEEN '2015-06-04' AND '2015-06-10' 
AND br.service_type = 1 
AND bip.bid_status = 1 
GROUP BY daily_booking; 
AND br.service_type = 1 
AND bip.bid_status = 1 
group BY daily_booking; 

上面的查詢與預訂計數2015-06-04是7468，我得到接受9359預訂，應該不超過預訂更指望它的自我。

Answer 1

我認爲你需要做你想要

只需選擇所有日期間的預訂和計數的子查詢 它應該是這樣的有什麼不同的方法，但它有點難以測試與給定的信息

SELECT 
    (SELECT count(*) 
     FROM booking AS b 
     JOIN booking_route AS br on b.id = br.booking_id 
     JOIN bid AS bi on b.id = bi.booking_id 
     JOIN bid_participant AS bip on bi.id = bip.bid_id 
     WHERE bip.bid_status > 0 
      AND DATE(b.date_created) BETWEEN '2015-06-04' AND '2015-06-10' 
      AND br.service_type = 1 
      AND bip.bid_status = 1 
     GROUP BY daily_booking; 
      AND br.service_type = 1 
      AND bip.bid_status = 1 
      group BY daily_booking) AS bid_received_count