Combining tables in SQL (only for for certain rows) - sql

Question

I wasn't even sure how to word this in the subject line. However, I have a SELECT statement that pulls information from an SQL view called CONTACTS (F_ame, L_Name, Address, Email, etc...). I have another view called INVOICES with purchase information for the members in the contacts view. Keep in mind that the INVOICES view has mulitple purchases of varying products for each member. These two views can be linked with a ContactID key
I only need to display a certain product (EADP Package), if purchased, from the INVOICES view on the same line as the member who purchased it. I also need to retain the entire member list in the pull. So, if I use a WHERE clause to only pull that product, It only gives me those who purchased that product. I need to keep the entire member list and still have a column that displays that particular product for those who purchased it. Hope that made sense.
Sorry, but there are 3 views, not 2. Here is what I have so far:
SELECT Contact.FirstName, Contact.LastName, Contact.CFSDesignation, Contact.EMailAddress1, Contact.Telephone1, Contact.DefaultPriceLevelIdName
FROM Contact INNER JOIN
FilteredInvoice ON Contact.ContactId = FilteredInvoice.contactid INNER JOIN
FilteredInvoiceDetail ON FilteredInvoice.invoiceid = FilteredInvoiceDetail.invoiceid
WHERE (Contact.DefaultPriceLevelIdName = 'member') AND FilteredInvoiceDetail.productidname = 'eAudiology 2014 Unlimited On-Demand Package'
This works fine,but only pulls those who purchased the package. I need the entire member list from CONTACTS (about 10,000 records) plus the product column showing the product above for those who purchased it. I belive is has something to do with joins, but can't get my head around it.
Getting Close, but it doesn't like the keyword "ON":
Also. in your previous answer, what are "C" and "I" used for?
SELECT Contact.FirstName, Contact.LastName, Contact.CFSDesignation, Contact.EMailAddress1, Contact.Telephone1, Contact.DefaultPriceLevelIdName
FROM Contact LEFT JOIN
FilteredInvoice ON Contact.ContactId = FilteredInvoice.contactid LEFT JOIN (SELECT FilteredInvoiceDetail.productidname
FROM FilteredInvoiceDetail
WHERE productidname = 'eAudiology 2014 Unlimited On-Demand Package') ON FilteredInvoice.invoiceid = FilteredInvoiceDetail.invoiceid
WHERE (Contact.DefaultPriceLevelIdName = 'member')

Answer 1

SELECT *
FROM Contacts C
LEFT JOIN ( SELECT *
FROM Invoices
WHERE Product = 'EADP Package') I
ON C.ContactID = I.ContactID

Answer 2

This finally worked for me:
SELECT DISTINCT Contact.ContactId,Contact.FirstName, Contact.LastName, Contact.CFSDesignation, Contact.EMailAddress1, Contact.DefaultPriceLevelIdName, productidname
FROM Contact LEFT JOIN
FilteredInvoice ON Contact.ContactId = FilteredInvoice.contactid LEFT JOIN (SELECT FilteredInvoiceDetail.productidname, FilteredInvoiceDetail.invoiceid
FROM FilteredInvoiceDetail
WHERE productidname = 'eAudiology 2014 Unlimited On-Demand Package' OR productidname = 'eAudiology 2014 Unlimited On-Demand Pkg Renewal') I ON FilteredInvoice.invoiceid = I.invoiceid
WHERE (Contact.DefaultPriceLevelIdName = 'member' OR DefaultPriceLevelIdName = 'student')
ORDER BY LastName