Join tables across databases?

In my SProc, I am trying to perform a JOIN on 2 tables that are located in
seperate databases...
...Is this possible?
In the SProc below, the focus is on joining dbo.customer.postalcode WITH pub
s.
city_zipcodes.ZIP_CODE... That is, I have a table of zipcodes and cities
located in the "Pubs" database, while the "Customer.postalcode" table is
located in the "VCMS" database. During testing in my VBA application, I am
returning an error of: "Invalid Object Name city_zipcodes" -- which leads m
e
to believe that I am incorrectly performing this table join.
Any help or suggestions are greatly appreciated!
James
--***StoredProc Sample
CREATE PROCEDURE AO_GetServiceRequests
(@.Date1 datetime=null,
@.Date2 datetime=null)
AS Set Nocount On
--return specified ServiceRequest if Date and Status is supplied
if @.Date1 is not null
begin
SELECT
service_request.serial,
service_request.record_date,
service_request.customer,
location.latitude,
location.longitude,
location.zone,
customer.first_name,
customer.last_name,
customer.phone_day,
customer.phone_eve,
customer.e_mail,
customer.address,
customer.postalcode,
customer.primary_loc,
supervisor.shortkey AS supervisor,
technician.shortkey AS tech,
pubs.city_zipcodes.ZIP_CODE, --from the zipcode tables in the
pubs db
pubs.city_zipcodes.CITY --from the zipcode tables
in the pubs db
FROM
dbo.service_request
INNER JOIN dbo.customer ON dbo.service_request.customer = dbo.
customer.serial
INNER JOIN dbo.location ON dbo.service_request.location = dbo.
location.loc_no
INNER JOIN dbo.employee As technician ON dbo.service_request.
serv_by = technician.serial
INNER JOIN dbo.employee As supervisor ON dbo.service_request.
serv_supervisor = supervisor.serial
INNER JOIN city_zipcodes ON dbo.customer.postalcode =
city_zipcodes.zipcode --this is the join I am trying to accomplish
where
(dbo.service_request.record_date >= CONVERT(DATETIME, @.Date1, 102)) AND (dbo
.
service_request.record_date <= CONVERT(DATETIME, @.Date2, 102))
Set Nocount Off
return 0
end
GO
Message posted via droptable.com
http://www.droptable.com/Uwe/Forum...server/200507/1Try these examples:
http://vyaskn.tripod.com/programming_faq.htm#q13
http://vyaskn.tripod.com/programming_faq.htm#q14
--
HTH,
Vyas, MVP (SQL Server)
SQL Server Articles and Code Samples @. http://vyaskn.tripod.com/
"j c via droptable.com" <forum@.droptable.com> wrote in message
news:514309300509D@.droptable.com...
In my SProc, I am trying to perform a JOIN on 2 tables that are located in
seperate databases...
...Is this possible?
In the SProc below, the focus is on joining dbo.customer.postalcode WITH
pubs.
city_zipcodes.ZIP_CODE... That is, I have a table of zipcodes and cities
located in the "Pubs" database, while the "Customer.postalcode" table is
located in the "VCMS" database. During testing in my VBA application, I am
returning an error of: "Invalid Object Name city_zipcodes" -- which leads
me
to believe that I am incorrectly performing this table join.
Any help or suggestions are greatly appreciated!
James
--***StoredProc Sample
CREATE PROCEDURE AO_GetServiceRequests
(@.Date1 datetime=null,
@.Date2 datetime=null)
AS Set Nocount On
--return specified ServiceRequest if Date and Status is supplied
if @.Date1 is not null
begin
SELECT
service_request.serial,
service_request.record_date,
service_request.customer,
location.latitude,
location.longitude,
location.zone,
customer.first_name,
customer.last_name,
customer.phone_day,
customer.phone_eve,
customer.e_mail,
customer.address,
customer.postalcode,
customer.primary_loc,
supervisor.shortkey AS supervisor,
technician.shortkey AS tech,
pubs.city_zipcodes.ZIP_CODE, --from the zipcode tables in the
pubs db
pubs.city_zipcodes.CITY --from the zipcode tables
in the pubs db
FROM
dbo.service_request
INNER JOIN dbo.customer ON dbo.service_request.customer = dbo.
customer.serial
INNER JOIN dbo.location ON dbo.service_request.location = dbo.
location.loc_no
INNER JOIN dbo.employee As technician ON dbo.service_request.
serv_by = technician.serial
INNER JOIN dbo.employee As supervisor ON dbo.service_request.
serv_supervisor = supervisor.serial
INNER JOIN city_zipcodes ON dbo.customer.postalcode =
city_zipcodes.zipcode --this is the join I am trying to accomplish
where
(dbo.service_request.record_date >= CONVERT(DATETIME, @.Date1, 102)) AND
(dbo.
service_request.record_date <= CONVERT(DATETIME, @.Date2, 102))
Set Nocount Off
return 0
end
GO
Message posted via droptable.com
http://www.droptable.com/Uwe/Forum...server/200507/1|||> pubs.city_zipcodes.ZIP_CODE, --from the zipcode tables in
the
> pubs.city_zipcodes.CITY --from the zipcode
tables
The selected columns

> FROM
> INNER JOIN city_zipcodes ON dbo.customer.postalcode =
> city_zipcodes.zipcode --this is the join I am trying to accomplish
from the selected table.
You made two mistakes. First, you did not qualify the table correctly in
the join. Second, you did not qualify the appopriate columns correctly
within the select list. Your select list should qualify the columns using
the same table qualification used in the join(s) - these should always match
EXACTLY. Often, it is best to use an alias for the table (as Vyas has done
in his examples). This lets you change (or correct) the selected table
without having to change the associated columns in the remainder of the
statement.

> where
> (dbo.service_request.record_date >= CONVERT(DATETIME, @.Date1, 102)) AND
(dbo.
> service_request.record_date <= CONVERT(DATETIME, @.Date2, 102))
This logic should NOT be needed. The arguments are already datetime
variables - converting them to the same datatype does nothing beneficial.
If record_date is a datetime, then nothing is gained with the CONVERT
statement. If record_date is char or varchar, then your logic is incorrect
since you did not avoid the implicit conversion (which is what you were
apparently trying to do with convert).|||Thanks for the link. That cleared everything up!
j
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