SQL Cross Join with null values

Question

I have a table AddressTypes with 4 records (home,office,vacation,hotel) and a table Address that share the filed addresstypeid.

In address table I have 1 record of type "home" and i want a query where I get 4 rows like this:

Type     Address1  Address2 City    State

home     piping    1232     Austin  Tx
office   null      null     null    null
vacation null      null     null    null
hotel    null      null     null    null

Here is an image of tables: http://tinypic.com/view.php?pic=28078xv&s=6

Im sure is something very easy maybe using cross join but dont get it. Hope someone can guide me. Appreciate in advance.

Answer 1

Left joining AdddressTypes to Addresses will produce desired result:

select at.Type, 
       a.Address1, 
       a.Address2, 
       a.City, 
       a.State
  from AddressTypes at
  left join Address a
    on at.AddressTypeID = a.AddressTypeID
-- For this query to make sense
-- Filter one person only
   and a.PersonID = @PersonID

----------- THIS PART WAS ADDED BY VAAA ------------------------

Nikola, I change to this:

select at.description, 
       a.Address1, 
       a.Address2, 
       a.City
  from address_types at
  left join Address a
    on 1 = 1
-- For this query to make sense
-- Filter one person only
   and a.addressid = 24

And then I get the 4 rows, but all of them have the same address info and just the "home" type address is the one with data. So its close...

Answer 2

Use the LEFT OUTER JOIN, which returns one copy of matching records from both the left and right tables and non-matching records from both the tables. Here is the test code I tried:

CREATE TABLE AddressTypes(
    AddressType SMALLINT NOT NULL,
    [Description] NVARCHAR(50))

ALTER TABLE AddressTypes
ADD CONSTRAINT PK_AddressTypes_AddressType
    PRIMARY KEY (AddressType)


CREATE TABLE [Address] (
    AddressID INT NOT NULL,
    AddressType SMALLINT,
    Address1 NVARCHAR(50),
    Address2 NVARCHAR(50),
    City NVARCHAR(50),
    State CHAR(2))

ALTER TABLE [Address]
ADD CONSTRAINT PK_Address_AddressID
    PRIMARY KEY (AddressID)

ALTER TABLE [Address]
ADD CONSTRAINT FK_address_addresstypes_addresstype 
    FOREIGN KEY (AddressType) REFERENCES AddressTypes(AddressType)


INSERT INTO AddressTypes VALUES (1, 'home'), (2, 'office'), 
                                (3, 'vacation'), (4, 'hotel')
INSERT INTO address VALUES (1, 1, 'piping', '1232', 'Austin', 'TX')

   -- Here is the query that outputs the result set.
    SELECT AT.AddressType AS [Type], A.Address1, A.Address2, A.City, A.State
    FROM AddressTypes AT
    LEFT OUTER JOIN address A
    ON AT.AddressType = A.AddressType