Dennis -

 

Your method works on an INSERT statement - BUT the APPEND command will still
give a SQLCODE = 0 even if there were no records found to be appended - so I
always get the value of COUNT = INSERT into one variable BEFORE an APPEND,
then compare it to the new value of COUNT = INSERT to be sure the APPEND
really generated a new row.

 

Sami

 

____________________________

Sami Aaron

Software Management Specialists

913-915-1971

[EMAIL PROTECTED]

 

 

 

From: [email protected] [mailto:[EMAIL PROTECTED] On Behalf Of Dennis
McGrath
Sent: Thursday, July 17, 2008 10:08 AM
To: RBASE-L Mailing List
Subject: [RBASE-L] - Re: Multi user R:Base on a LAN

 

Tom

 

IF SQLCode = 0 after the insert then you can test WHERE COUNT = INSERT to
get the correct PK.

 

Otherwise you must handle the error.  If you ask for WHERE COUNT = INSERT
after an error you will get the wrong info.

 

I just tested and SQLCODE is now correctly updated even if the applicable
error message is turned off.

This is a fairly recent fix.

 

Dennis McGrath

 

 

 

 

 

 

 

 

 

  _____  

From: [email protected] [mailto:[EMAIL PROTECTED] On Behalf Of
[EMAIL PROTECTED]
Sent: Thursday, July 17, 2008 9:45 AM
To: RBASE-L Mailing List
Subject: [RBASE-L] - Re: Multi user R:Base on a LAN

 

Tom:

If your app was designed to be single-user, there's another thing that could
mess you up if you move to multiple users in addition to what others have
mentioned.   Let's say you add a row into a table and want to grab the PK of
the row you just entered; in single-user mode you might have used a command
like "WHERE COUNT = LAST" ; this won't work because it could grab the row
that another user just entered.  Instead use "WHERE COUNT = INSERT".   Just
an FYI, this has bit me a couple times when I run across code that someone
else has written!

Karen





We are moving our internal database project from our single user development
machine out to 20 machines and eventually to users not directly connected to
our LAN. Using Turbo8 compiler because of several other projects that have
been requested. LAN is a mixture of speedy machines and some dogs that will
need to be replaced at some point. Server works very well. We expect
numerous problems based on the "didn't know I did not know that" paradigm.
Our system works great on a single computer and has required "some" changes
as we start moving to multiple machines. More will be coming. The
differences between single user vs. multi user becomes very obvious once it
does not work (particularly in demos) and you have to figure it out. Just
part of the learning process.  

  

Our question (which may seem very basic): Is there a best way to set up
multi-user R:Base on a LAN system? Data is on Drive Y where we can secure
direct access from inquiring mice. Is it best for the EXE/DLLs to also be on
Drive Y or remain on individual machine's Drive C to access the Drive Y
database. We have tried both ways and they work. The concern is LAN speed
(particularly for some older computers) and conflicts between
tables/temps/views that the software uses. It seemed having one network
based EXE that multiple people can access would really effect our LAN
speed/memory, while separate EXE/DLLs on desktops isolate some memory
processes and be primarily limited to moving data. I have no doubt we have a
lot to learn about data and logic conflicts as we go through this. 



I remain amazed at just how much DYI groups like us can do with R:Base with
some time, interest, and willingness to learn.

 

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