Mysql Choisissez parmi les différentes tables

Question

Je voudrais combiner ces quatre requêtes pour obtenir ce résultat:

Vendors 
----------- 
select i_vendor, name as Vendor from Vendors 

Customers 
----------- 
select i_customer, name as Customer from Customers 

Calls 
----------- 
select i_vendor,i_customer, id as Call, date_format(connect_time,"%Y-%m-%d %H") as Date, duration from CDR_Vendors where connect_time between curdate() and now() 

Failed_Calls 
------------ 
select i_vendor,i_customer, id as Failed_Call, date_format(connect_time,"%Y-%m-%d %H") as Date from CDR_Vendors_Failed where connect_time between curdate() and now() 

Result 
------------ 
Date, Vendor, Customer, Count(Call), Count(Failed_Call), Sum()duration 

2010-10-30 00 | Vendor1 | Customer1 | 100 | 300 | 8000 
2010-10-30 01 | Vendor1 | Customer2 | 267 | 100 | 2000 
2010-10-30 02 | Vendor1 | Customer3 | 388 | 20 | 100 

2010-10-30 00 | Vendor2 | Customer1 | 140 | 120 | 50 
2010-10-30 01 | Vendor2 | Customer2 | 102 | 309 | 529 
2010-10-30 02 | Vendor2 | Customer3 | 156 | 78 | 1000 

2010-10-30 00 | Vendor3 | Customer1 | 190 | 567 | 876 
2010-10-30 01 | Vendor3 | Customer2 | 215 | 987 | 765 
2010-10-30 02 | Vendor3 | Customer3 | 383 | 321 | 123 

Je l'ai testé la requête suivante avec un seul client et un fournisseur unique mais il prend beaucoup de temps

SELECT 
      Vendors.name as Vendor, 
      Customers.name as Customer 
        date_format(connect_time,"%Y-%m-%d %H") AS date, 
        Failed.NotConnected, 
        count(id) as calls, 
        sum(`duration`) 
    FROM test.`CDR_Vendors` 
     inner join Vendors on (CDR_Vendors.i_vendor = Vendors.i_vendor) 
     inner join Customers on (CDR_Vendors.i_customer = Customers.i_customer) 
     inner join 
       (SELECT 
       Vendors.name as Vendor, 
       Customers.name as Customer,   
       date_format(connect_time,"%Y-%m-%d %H") AS date, 
       Count(id) as NotConnected 
       FROM `CDR_Vendors_Failed` 
       inner join Vendors on (CDR_Vendors_Failed.i_vendor = Vendors.i_vendor) 
       inner join Customers on (CDR_Vendors_Failed.i_customer = Customers.i_customer) 
       WHERE 
       Customers.name = "Customer1" 
       and 
       Vendors.name = "Vendor1" 
       and connect_time between curdate() and now() 
       GROUP by date 
       ORDER BY date 
      )Failed on Failed.date = date_format(connect_time,"%Y-%m-%d %H") 
     WHERE 
     Customers.name = "Customer1" 
     and 
     Vendors.name = "Vendor1" 
     and connect_time between curdate() and now() 
     GROUP by date 
     ORDER BY date 

S'il vous plaît, quel est le meilleur moyen d'obtenir un résultat?

vous remercie à l'avance

Answer 1

Je pense que vous pouvez prendre une meilleure approche avec vues ->Introduction to Views

Answer 2

essayer cette requête

SELECT 
    count(cid) as CALLS, 
    count(fid) as FAILED_CALLS, 
    DateHour, 
    vendor as Vendor, 
    customer as Customer, 
    Sum(duration) as Duration 
FROM 
    (
     SELECT 
      c.id as cid, 
        NULL as fid, 
      date_format(connect_time,"%Y-%m-%d %H") as DateHour, 
      cu.name as customer, 
      v.name as vendor, 
      c.duration 
     FROM 
      calls as c 
       left join 
        customers as cu 
         on 
          cu.i_customer = c.i_customer 
       left join 
        vendors as v 
         on 
          v.i_vendor = c.i_vendor 
     WHERE 
      date_format(connect_time,"%Y-%m-%d %H") between CURDATE() and NOW() 
     GROUP BY 
      DateHour, customer, vendor 

     UNION 

     SELECT 
        NULL as cid, 
      c.id as fid, 
      date_format(connect_time,"%Y-%m-%d %H") as DateHour, 
      cu.name as customer, 
      v.name as vendor 
     FROM 
      failed_calls as c 
       left join 
        customers as cu 
         on 
          cu.i_customer = c.i_customer 
       left join 
        vendors as v 
         on 
          v.i_vendor = c.i_vendor 
     WHERE 
      date_format(connect_time,"%Y-%m-%d %H") between CURDATE() and NOW() 
     GROUP BY 
      DateHour, customer, vendor 
    ) as tmp_table 
GROUP BY 
    DateHour, vendor, customer; 

Je na pas essayer de l'exécuter. Mais j'espère que cela fonctionnera de la manière que vous attendez. Si ce n'est pas le cas s'il vous plaît donnez-moi votre structure db (ou de préférence créer une table) et quelques données fictives. Je vais écrire la bonne requête pour vous. :)