Question

I have been trying to get this query to work but I am stumbed right now.
Problem is on the JOIN with GROUP_CONCAT in it. I just can’t figure how to get it working.

What I want is to get buntch of data from RFQs and joining Customers, etc. to it and everything was fine until I had to change Suppliers field so that it could have multiple suplliers per one RFQs row. I created new tables RFQsSuppliers where I combine Supplier.ID’s and RFQs.ID’s and I have table Suppliers that contains the names and other stuff.

I want to get Suppliers to have all suppliers separated with ‘,’.

My Query:

$result = mysql_query("SELECT     Pullero.DateAdded as DateAdded,
                              Customers.Name as customer,
                              Pullero.ID as RFQID,
                              Ships.Name as ship,
                              Pullero.CustomerRef as CustomerRef,
                              Contacts.FirstName as contactF,
                              Contacts.LastName as contactL,
                              Contacts.Email as contactE,
                              Users.tunnus as handler,
                              RFQStatus.Name as status,
                              Pullero.Description as RFQDescription,
                              Pullero.LastEdited as LastEdit
                   FROM       RFQs Pullero
                   JOIN      (SELECT    RFQs.ID,
                                        GROUP_CONCAT(Supplier.Name) AS Suppliers
                              FROM      RFQs 
                              LEFT JOIN RFQsSuppliers ON RFQs.ID = RFQsSuppliers.RFQID
                              JOIN      Suppliers ON RFQsSuppliers.SupplierID = Suppliers.ID
                              GROUP BY  RFQs.ID) 
                              RFQsSuppliers ON Pullero.ID = RFQsSuppliers.RFQID

                   LEFT JOIN  Ships ON RFQ.ShipID=Ships.ID
                   LEFT JOIN  Contacts ON RFQ.ContactID=Contacts.ID
                   LEFT JOIN  Customers ON RFQ.CustomerID=Customers.idCustomers
                   LEFT JOIN  Users ON RFQ.PriJobHandler=Users.id
                   LEFT JOIN  RFQStatus ON RFQ.StatusID=RFQStatus.ID
                   WHERE      RFQs.LastEdited > '$lastedited'
                   ORDER BY   RFQs.LastEdited ASC
                  ") or die(mysql_error());

At the moment, error is :Unknown column ‘Supplier.Name’ in ‘field list’

EDIT

Below is some expample of my Table desing:

  RFQs
  ID | DateAdded | CustomerID | ShipID | LastEdited | StatusID ...

  /* -------------------------------------- */
  Suppliers
  ID | Name | CountryID
  1    Sup1   2
  2    Sup2   5
  3    Sup3   3
  4    Sup4   3
  /* -------------------------------------- */
  RFQsSuppliers
  ID | RFQID | SupplierID
  1    1       4
  2    2       3
  3    56      3
  4    4       3
  5    39      1
  6    56      1
  7    4       4

I tried to get only the suppliers with following query:

$result = mysql_query("SELECT     Suppliers.Name as Suppliers
                   FROM       RFQs
                   LEFT JOIN  RFQsSuppliers ON RFQs.ID=RFQsSuppliers.SupplierID
                   LEFT JOIN  Suppliers ON RFQsSuppliers.SupplierID=Suppliers.ID
                   GROUP BY   RFQs.ID
                  ") or die(mysql_error());

But print_r on each row returns only following:

Array ( [Suppliers] => Sup1,Sup1 ) Array ( [Suppliers] => ) Array ( [Suppliers] => Sup4,Sup4 ) Array ( [Suppliers] => ) Array ( [Suppliers] => ) Array ( [Suppliers] => )

Any ideas?

Answer 1

JOIN      (
    SELECT    RFQs.ID,
              GROUP_CONCAT(Supplier**s**.Name) AS Suppliers
    FROM      RFQs 
    LEFT JOIN RFQsSuppliers ON RFQs.ID = RFQsSuppliers.RFQID
    JOIN      Suppliers ON RFQsSuppliers.SupplierID = Suppliers.ID
    GROUP BY  RFQs.ID
) RFQsSuppliers

Try that

I believe you missed an ‘s’ in your GROUP_CONCAT table name as you had it as Supplier.Name instead of Suppliers.name as per the table

Edit

Additionally you are referring to RFQs.LastEdited in WHERE and ORDER BY clauses however you aliased table RFQs to be named Pullero, so those will need changing to Pullero.LastEdited

Edited edit Reformatted to use JOINs instead of SUBQUERY

SELECT     
    Pullero.DateAdded as DateAdded,
    Customers.Name as customer,
    Pullero.ID as RFQID,
    GROUP_CONCAT(Suppliers.Name) AS Suppliers,
    Ships.Name as ship,
    Pullero.CustomerRef as CustomerRef,
    Contacts.FirstName as contactF,
    Contacts.LastName as contactL,
    Contacts.Email as contactE,
    Users.tunnus as handler,
    RFQStatus.Name as status,
    Pullero.Description as RFQDescription,
    Pullero.LastEdited as LastEdit

FROM       RFQs AS Pullero
LEFT JOIN  RFQsSuppliers ON RFQsSuppliers.RFQID = Pullero.ID
LEFT JOIN  Suppliers ON RFQSuppliers.SupplierID = Suppliers.ID
LEFT JOIN  Ships ON RFQ.ShipID=Ships.ID
LEFT JOIN  Contacts ON RFQ.ContactID=Contacts.ID
LEFT JOIN  Customers ON RFQ.CustomerID=Customers.idCustomers
LEFT JOIN  Users ON RFQ.PriJobHandler=Users.id
LEFT JOIN  RFQStatus ON RFQ.StatusID=RFQStatus.ID
WHERE      Pullero.LastEdited > '$lastedited'
ORDER BY   Pullero.LastEdited ASC

Or for an example using original subquery, the RFQs link seems superfulous so I’ve adjusted it + have added the Suppliers list into the output

$result = mysql_query("SELECT     Pullero.DateAdded as DateAdded,
                              RFQsSuppliers.Suppliers,
                              Customers.Name as customer,
                              Pullero.ID as RFQID,
                              Ships.Name as ship,
                              Pullero.CustomerRef as CustomerRef,
                              Contacts.FirstName as contactF,
                              Contacts.LastName as contactL,
                              Contacts.Email as contactE,
                              Users.tunnus as handler,
                              RFQStatus.Name as status,
                              Pullero.Description as RFQDescription,
                              Pullero.LastEdited as LastEdit
                   FROM       RFQs Pullero
                   JOIN      (
                      SELECT    RFQsSuppliers.RFQID,
                                GROUP_CONCAT(Suppliers.Name) AS Suppliers
                      FROM      RFQsSuppliers.RFQID
                      JOIN      Suppliers ON RFQsSuppliers.SupplierID = Suppliers.ID
                      GROUP BY  RFQsSuppliers.RFQID
                    ) AS RFQsSuppliers ON Pullero.ID = RFQsSuppliers.RFQID
                   LEFT JOIN  Ships ON RFQ.ShipID=Ships.ID
                   LEFT JOIN  Contacts ON RFQ.ContactID=Contacts.ID
                   LEFT JOIN  Customers ON RFQ.CustomerID=Customers.idCustomers
                   LEFT JOIN  Users ON RFQ.PriJobHandler=Users.id
                   LEFT JOIN  RFQStatus ON RFQ.StatusID=RFQStatus.ID
                   WHERE      Pullero.LastEdited > '$lastedited'
                   ORDER BY   Pullero.LastEdited ASC
                  ") or die(mysql_error());

EDIT Updated query for second part of question

$result = mysql_query("SELECT RFQs.ID, GROUP_CONCAT(Suppliers.Name) as Suppliers
                   FROM       RFQs
                   LEFT JOIN  RFQsSuppliers ON RFQs.ID=RFQsSuppliers.RFQID
                   LEFT JOIN  Suppliers ON RFQsSuppliers.SupplierID=Suppliers.ID
                   GROUP BY   RFQs.ID
                  ") or die(mysql_error());