RE: Update a column in a table from a flat file

John,
Without sounding sarcastic, YOU tell the system how to update based upon
whatever match conditions apply.
When you said "flat" file, do you mean :-
a non-keyed file?
a file with one field in the record?


Alan Shore

NBTY, Inc
(631) 244-2000 ext. 5019
AShore@xxxxxxxx
"If you're going through Hell, keep going" - Winston Churchill
midrange-l-bounces@xxxxxxxxxxxx wrote on 02/13/2008 10:46:30 AM:

I am not at all proficient in SQL. I was not aware that SQL could update

a

table, based on a flat file. How would SQL know where the values where

in the

flat file?

John McKee

Quoting "John Arnold (MFS)" <jarnold@xxxxxxxxxxxxxxxxxxxxxxxxxx>:

For the column where you want the new value use,

Case when mrc = yyy then xxx end as id

In your select statement that creates the flat file.


John Arnold
(301) 354-2939


-----Original Message-----
From: midrange-l-bounces@xxxxxxxxxxxx
[mailto:midrange-l-bounces@xxxxxxxxxxxx] On Behalf Of John McKee
Sent: Tuesday, February 12, 2008 11:34 PM
To: Midrange Systems Technical Discussion
Subject: Update a column in a table from a flat file

My earlier question has been resolved. Can't skip a key field in a
database and get decent performance.

Now, I wondering:

Run the Crystal report. Export the rsssults to a flat file. First
field would be a complete primary key to the MS-SQL database. Third
field would be the new value for a single specified field.

One possibility would be to modify the text file to read like this:

update clinical set id= xxx where mrc=yyy

The above line would be modified so that a text file would have several
thousand individual update commands. The file would be input to a
command line program, name eludes me for the moment.

Is there a way to do all the updates with a single command?

John McKee

--
This is the Midrange Systems Technical Discussion (MIDRANGE-L) mailing
list To post a message email: MIDRANGE-L@xxxxxxxxxxxx To subscribe,
unsubscribe, or change list options,
visit: http://lists.midrange.com/mailman/listinfo/midrange-l
or email: MIDRANGE-L-request@xxxxxxxxxxxx Before posting, please take a
moment to review the archives at

http://archive.midrange.com/midrange-l.

--
This is the Midrange Systems Technical Discussion (MIDRANGE-L) mailing

list

To post a message email: MIDRANGE-L@xxxxxxxxxxxx
To subscribe, unsubscribe, or change list options,
visit: http://lists.midrange.com/mailman/listinfo/midrange-l
or email: MIDRANGE-L-request@xxxxxxxxxxxx
Before posting, please take a moment to review the archives
at http://archive.midrange.com/midrange-l.

--
This is the Midrange Systems Technical Discussion (MIDRANGE-L) mailing

list

To post a message email: MIDRANGE-L@xxxxxxxxxxxx
To subscribe, unsubscribe, or change list options,
visit: http://lists.midrange.com/mailman/listinfo/midrange-l
or email: MIDRANGE-L-request@xxxxxxxxxxxx
Before posting, please take a moment to review the archives
at http://archive.midrange.com/midrange-l.