dayly table update

hello,
i must dayly update a table in my database with the values of a CSV file
(~300000 entries)
example of the tabel (artNr ,productname ,price )
000001 monitor 234,66
000003 pc 699,44
....
245433 router 126,33
Now dayly the table-content is deleted and the csv-file is imported
Is it possible a better way - to update only the modified values and insert
the new.
How can this be done?
thanksOne recommendation could be
1. Create a staging table called get_bcp_h_daily_csv
2. Truncate the table
3. DTS the csv file into staging table
4. Write the first entry to a surrogate table called ot_su_daily_csv as in
a) below.
5. Write a sProc that incrementally loads what's in the surrogate table into
a lookup table called ot_lu_daily_csv for your database as in b) below:
6. Schedule a job to run this DTS Each day
7. Sorted
a)
INSERT INTO ot_su_daily_csv (ColName1, ColName2)
SELECT ColName1, ColName2
FROM get_bcp_h_daily_csv BCP
WHERE NOT EXISTS ( SELECT * FROM ot_su_daily_csv SURR
WHERE SURR.Col1= BCP.Col1 )
b.)
INSERT INTO ot_lu_daily_csv
(Col1, Col2)
SELECT Col1, Col2
FROM ot_su_daily_csv SURR(nolock)
ORDER BY Col1|||thanks for the recommendation - it works well if only each day new values in
the csv-file are attached.
But in my csv file some colums of the articles are changed - like in the
example
example: - day1
000001 monitor 234,66
000003 pc 699,44
the next day - day 2
000001 monitor 230,03 (price is modified...)
000003 pc-3,4GHz 699,44 (product description is modified)
245433 router 126,33 -> ok will be detected and updated
....
how to make a correct update in this situation ...
thanks
Xavier|||On Sun, 6 Nov 2005 07:14:50 -0800, Xavier wrote:

>thanks for the recommendation - it works well if only each day new values i
n
>the csv-file are attached.
>But in my csv file some colums of the articles are changed - like in the
>example
>example: - day1
>000001 monitor 234,66
>000003 pc 699,44
>the next day - day 2
>000001 monitor 230,03 (price is modified...)
>000003 pc-3,4GHz 699,44 (product description is modified)
>245433 router 126,33 -> ok will be detected and updated
>....
>how to make a correct update in this situation ...
>thanks
>Xavier
Hi Xavier,
Load the new data in a staging table. Then run a procedure that updates
existing data and adds new data, as follows:
UPDATE t
SET Descr = s.Descr,
Price = s.Price,
.. (other columns)
FROM TheTable AS t
INNER JOIN StagingTable AS s
ON s.KeyColumn = theTable.keyColumn
WHERE t.Descr <> s.Descr
OR t.Price <> s.Price
OR ... (other columns)
INSERT INTO TheTable (KeyColumn, Descr, Price, ... (other columns))
SELECT KeyColumn, Descr, Price, ... (other columns)
FROM Stagins AS s
WHERE NOT EXISTS
(SELECT *
FROM TheTable AS t
WHERE t.KeyColumn = s.KeyColumn)
Best, Hugo
--
(Remove _NO_ and _SPAM_ to get my e-mail address)|||thanks,
Xavier
"Hugo Kornelis" wrote:

> On Sun, 6 Nov 2005 07:14:50 -0800, Xavier wrote:
>
> Hi Xavier,
> Load the new data in a staging table. Then run a procedure that updates
> existing data and adds new data, as follows:
> UPDATE t
> SET Descr = s.Descr,
> Price = s.Price,
> ... (other columns)
> FROM TheTable AS t
> INNER JOIN StagingTable AS s
> ON s.KeyColumn = theTable.keyColumn
> WHERE t.Descr <> s.Descr
> OR t.Price <> s.Price
> OR ... (other columns)
> INSERT INTO TheTable (KeyColumn, Descr, Price, ... (other columns))
> SELECT KeyColumn, Descr, Price, ... (other columns)
> FROM Stagins AS s
> WHERE NOT EXISTS
> (SELECT *
> FROM TheTable AS t
> WHERE t.KeyColumn = s.KeyColumn)
> Best, Hugo
> --
> (Remove _NO_ and _SPAM_ to get my e-mail address)
>