MySQL запрос слишком долго

Question

сервер MySQL не дает никакого ответа и повешен после следующего запроса:

SELECT 
i.id AS id, 
i.name AS product, 
i.stock AS stock, 
IF(SUM(s1.qty) IS NULL, 0, SUM(s1.qty)) AS thisqty, 
IF(SUM(s2.qty) IS NULL, 0, SUM(s2.qty)) AS lastqty, 
IF(SUM(s3.qty) IS NULL, 0, SUM(s3.qty)) AS last2qty, 
IF(SUM(s4.qty) IS NULL, 0, SUM(s4.qty)) AS last3qty 
FROM 
item i, 
sale s1, sale s2, sale s3, sale s4, 
odr o1, odr o2, odr o3, odr o4 
WHERE 
i.id = s1.itemid AND s1.oui = o1.oui AND (o1.ddate BETWEEN '2016-02-08' AND '2016-02-14') AND 
i.id = s2.itemid AND s2.oui = o2.oui AND (o2.ddate BETWEEN '2016-02-01' AND '2016-02-07') AND 
i.id = s3.itemid AND s3.oui = o3.oui AND (o3.ddate BETWEEN '2016-01-25' AND '2016-01-31') AND 
i.id = s4.itemid AND s4.oui = o4.oui AND (o4.ddate BETWEEN '2016-01-18' AND '2016-01-24') GROUP BY PRODUCT; 

Моя структура таблицы следующим образом:

mysql> describe item; 
+---------+--------------+------+-----+---------+----------------+ 
| Field | Type   | Null | Key | Default | Extra   | 
+---------+--------------+------+-----+---------+----------------+ 
| id  | int(3)  | NO | PRI | NULL | auto_increment | 
| name | varchar(255) | NO |  | NULL |    | 
| wprice | int(11)  | NO |  | NULL |    | 
| sprice | int(11)  | NO |  | NULL |    | 
| bprice | int(11)  | NO |  | NULL |    | 
| stock | float  | NO |  | NULL |    | 
| buyfrom | varchar(255) | NO |  | NULL |    | 
| unit | varchar(255) | NO |  | NULL |    | 
+---------+--------------+------+-----+---------+----------------+ 
8 rows in set (0.03 sec) 

mysql> describe odr; 
+--------+-------------+------+-----+---------+-------+ 
| Field | Type  | Null | Key | Default | Extra | 
+--------+-------------+------+-----+---------+-------+ 
| oui | varchar(32) | YES |  | NULL |  | 
| odate | varchar(16) | YES |  | NULL |  | 
| ddate | varchar(16) | YES |  | NULL |  | 
| otime | varchar(16) | YES |  | NULL |  | 
| cid | varchar(6) | YES |  | NULL |  | 
| disc | int(11)  | YES |  | NULL |  | 
| total | int(11)  | YES |  | NULL |  | 
| net | int(11)  | YES |  | NULL |  | 
| status | char(1)  | YES |  | NULL |  | 
+--------+-------------+------+-----+---------+-------+ 
9 rows in set (0.02 sec) 

mysql> describe sale; 

+--------+-------------+------+-----+---------+-------+ 
| Field | Type  | Null | Key | Default | Extra | 
+--------+-------------+------+-----+---------+-------+ 
| oui | varchar(32) | YES |  | NULL |  | 
| itemid | varchar(3) | YES |  | NULL |  | 
| qty | float  | YES |  | NULL |  | 
| price | int(11)  | YES |  | NULL |  | 
| amount | int(11)  | YES |  | NULL |  | 
| profit | float  | NO |  | NULL |  | 
+--------+-------------+------+-----+---------+-------+ 
6 rows in set (0.03 sec) 

Я попробовал запрос с s1, и она работала. Может быть слишком много ИД в том месте. Я также пробовал с phpmyadmin и до сих пор не работал

Answer 1

Изменен запрос на фильтрацию данных внутри подзапросов.

Попробуйте это:

SELECT 
    i.id AS id, 
    i.name AS product, 
    i.stock AS stock, 
    IF(SUM(s1.qty) IS NULL, 0, SUM(s1.qty)) AS thisqty, 
    IF(SUM(s2.qty) IS NULL, 0, SUM(s2.qty)) AS lastqty, 
    IF(SUM(s3.qty) IS NULL, 0, SUM(s3.qty)) AS last2qty, 
    IF(SUM(s4.qty) IS NULL, 0, SUM(s4.qty)) AS last3qty 
FROM item i 
inner join (select sale.* from sale 
       inner join odr on sale.oui=odr.oui 
       where odr.ddate BETWEEN '2016-02-08' AND '2016-02-14' 
      ) s1 on i.id = s1.itemid 
inner join (select sale.* from sale 
       inner join odr on sale.oui=odr.oui 
       where odr.ddate BETWEEN '2016-02-01' AND '2016-02-07' 
      ) s2 on i.id = s2.itemid 

inner join (select sale.* from sale 
       inner join odr on sale.oui=odr.oui 
       where odr.ddate BETWEEN '2016-01-25' AND '2016-01-31' 
      ) s3 on i.id = s3.itemid 

inner join (select sale.* from sale 
       inner join odr on sale.oui=odr.oui 
       where odr.ddate BETWEEN '2016-01-18' AND '2016-01-24' 
      ) s4 on i.id = s4.itemid    
GROUP BY PRODUCT;