Query returning live-result...

Query returning live-result...

Post by Sylvain St.Germai » Tue, 10 Sep 1996 04:00:00



Hi,

(Using Delphi 2 and Sybase SQL Anywhere 5.02)

I learned that in order to be able to modify the query results
from within a DBGrid, the query must return a live set.

I also learned that a live set is obtained by :
 1 - using the open method of the TQuery
 2 - having a query refering to only one table

This is what I am doing... However, I have in my DBGrid a lookup
field which is working fine into the DBGrid but does not post
the changes to the database...

Am I missing something here? Any help appreciated.

Regards,
Sylvain.

 
 
 

Query returning live-result...

Post by Stephen Novotn » Wed, 18 Sep 1996 04:00:00


Make sure that your not using an order by clause in the SQL,
and the property 'request Live' of TQuery := TRUE

Steve>

 
 
 

1. Live Query Result Set where PK also FK

We have discovered a problem with using a live Query updateable result set in
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we get an integrity constraint violation on our Oracle 7.1 database:

Column part of the  Primary Key
Column is also a Foreign Key to a different table
Column is a TStringField

I know this sounds strange but we have over 100 tables in our model and we
tested this theory on over twenty tables and the problem seems to be real.  
Questions:

1) Is this a known bug?  It seems rather large to have gone unnoticed
2) Is this problem unique to Oracle 7.x servers
3) Anyone know of a work around?

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