Creating Access DB

P

PO

Hi!

I'm creating a report in Excel. The report is derived from several thousands
rows of data (typically 40-50.000). The data comes from 2 different
databases (Oracle and SQL-server).

I would like to set up an Access db for temporary data storage. With the
data in the same db I can create a recordset which joins the 2 tables.
Ideally the db is created (with two tables) every time the Excel-report is
executed, and thereafter removed (I could of course make it permanent but
the users have 15-20 other reports (all in Excel) and I don't want to
trouble them with an Access DB). I think that creating the DB from code
within Excel doesn't take to much extra time(?).

I need some example code for setting up the db with 2 tables. I don't know
if I need to set up the tables, perhaps I could just append the Excel
recordset, containing the data, directly to the db??

I run Excel 2000 and Access 2000.

TIA
PO
 
F

Frank Stone

i keep reading what you are trying to do and can see no
real advantage to doing it that way. If you are going to
do a record set, you can get that direct from the oracle
db and sql db (access not needed).
how are you planning to get the data in the access db for
temporary storage?
why temporary? linked, it would give you permanent on
demand real time data.
once created, are you going to delete the access db?
sounds to me like you fixing to write a whole lot of code
that is really not needed.
with what you have stated and with the features in access
and excel, you can point and click through the whole
process.
 
P

PO

Frank,

My english is not so good but I'll try to explain the best I can:

1. Since I get the data from 2 db's I have to use 2 separate
connections/recordsets (or is it possible to query both db's in one SELECT
joining the two tables? How?). And as far as I know there is no way creating
a third recordset based on a join between the other two recordsets.

I have tried to use an array as an intermediary to piece the two recordsets
together, but since there is a great amount of data involved, I quickly get
out of memory.

2. The Access db. About 30 persons use this xl-report and it is sent out by
mail. Usually they just place the xlt-file on their desktop and double-click
the icon when they want to run the report. I have previously used Access as
an intermediary for creating reports. Every time I made changes to the
report, an extra column of data for instance, I had to resend both the xlt
and the access db. Some of the users replaced the xlt-file but not de Access
db, and then, of course the application failed. Therefore, just to keep
things simple, I just want to send out a xlt-file, any changes to the report
(and the db) is done in the xlt-files code.

3. Linking data. The problem is that some of the rows have to go into
separate sheets. I have a procedure which loops through the records, and be
a certain logic, rows are moved to other sheets, which in turn makes the
links useless.

I'd still like to try creating an access db from within the VBE. If it turns
out to be to time-consuming I'll try something else.

Regards
PO
 
F

Frank Stone

you will have to know the tables names in the oracle
database and in the SQL database that your report needs.
you may need permission and passwords. see IS if you do.

do/know above before proceeding.

create an access database.
Open access>file>new database>blank database >create
click the table tab then File>get external data>link table
a dialog box will appear. find your oracle data base.
High Light the tables you want/need then click link
do the same for the SQL database.you are now linked.
click the query tab. then click the new button.
from the show table box, double click both tables.
Link the two table by common fields.
drag the fields from each table you want to the query in
the order you want. save the query.
(run it to make sure it's want you want.)
open excel. file>date>get external data>new database query
from the choose data sorce box, select your database.(if it
is not showing, click brouse and find it.)
once found, from the choose column box, douple click the
query. drag all of the columns from the left side to the
right or click the > arrow until all columns have moved
over to the left side. click next, next, next, finish.
you should now have data in the xl file from the access
query based on a table in oracle and SQL giving you real
time up to date data each time you refresh.
there is a exteral data toolbar that can refresh the
query,edit, set properties, creat new ect.
I ususally put a commandbutton on the screen with the
following code behind it.

sub commandbutton_on click()
range("A1").select 'assuming the query is at A1
Selection.querytable.refresh backgourndquery:= false
end sub

the button has spoiled my users.
 
F

Frank Stone

additonal thoughts
make sure the xl file and the access db are on a public
drive that all 30 users have access to. they will not need
to open access. only the excel file. they click the
button - they get the data(report). your work was done
when you finish setting it up.
this way mail is not necessary and saves space on the mail
server. IS will like that. your users can put the file up
as an icon on they desktop. and they get real time info
when they want as often as they want at the click of a
button.
remember:
week old data
is
weak ol' data.
 
P

PO

I never thought of putting one db on a public drive!

I'll try it our way.

Thanks a lot!
PO
 
J

Jamie Collins

you will have to know the tables names in the oracle
database and in the SQL database that your report needs.
you may need permission and passwords.
Click to expand...

Still won't be able to join tables in two different databases.
However, the OP could create linked tables in a Jet database and do
the JOIN in Jet.

Jamie.

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