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InstantDB: Re: Updating of parent table using param list fails


Paul

Thanks for reporting this. I too am having problems reproducing this. 
When you talk of SQL with parameter lists, do you mean 
PreparedStatements? I tried them out as well. You can script these also 
BTW:

p UPDATE Parent SET NAME = ?, STUFF = ? WHERE NAME = ?;
s BAR,HIYA,FOO;

Is there any more info you can give on this problem?

You also sent an earlier email suggesting that sensible default formats 
be adopted for TIMESTAMP and equivalent types. I think that's a good 
idea and I'll put it in a future release.

Regards

Pete

--

Peter Hearty              peter.hearty@lutris.com
Lutris Technologies (UK)  http://www.lutris.com/



----- Original Message -----
From: Suchko Paul M <suchko.pm@mellon.com>
Date: Wednesday, November 29, 2000 8:31 pm
Subject: Updating of parent table using param list fails

> 	When a non-key columns of parent tables participating in 
referential
> integrity are updated using SQL with parameter list (i.e., ?, ? , 
> ?), the
> updates are failing with the following message.
> 
>    "Cannot delete value, 123. In use by column Child.ID"
> 
>    I tried build a test script to do this but I could not 
> reproduce it
> which makes me think it has to do with parameters list processing 
> which I
> cannot use in scripts.
> 
>    d org.enhydra.instantdb.jdbc.idbDriver;
>    o jdbc:idb:C:\IBMVJava\IDE\project_resources\IBM WebSphere Test
> 
Environment\hosts\default_host\default_app\web\Properties\lis_db.propert
ies;
> 
>    e DROP TABLE Child;
> 
>    e DROP TABLE Parent;
> 
>    e CREATE TABLE Parent (
>        ID INTEGER PRIMARY KEY UNIQUE NOT NULL AUTO INCREMENT,  
>        NAME CHAR(40) UNIQUE,
>        STUFF CHAR(40) 
>    );
> 
>    e CREATE TABLE Child (
>        ID INTEGER PRIMARY KEY NOT NULL, 
>        STUFF CHAR(40)
>        ) 
>    FOREIGN KEY(ID) REFERENCES Parent(ID) ON DELETE CASCADE;
> 
>    e INSERT INTO Parent(NAME) VALUES("FOO");
> 
>    e INSERT INTO Child(ID, STUFF) VALUES(1000, "stuff");
>    e INSERT INTO Child(ID, STUFF) VALUES(1000, "stuff1");
>    e INSERT INTO Child(ID, STUFF) VALUES(1000, "stuff2");
>    e INSERT INTO Child(ID, STUFF) VALUES(1000, "stuff3");
> 
>    e UPDATE Parent SET NAME = "BAR", STUFF = "HIYA" WHERE NAME = 
> "FOO";
>    c close;
> 
> > Paul M. Suchko
> > GTS Technology
> > Phone: (412) 234-2075
> > Fax: (412) 236-2032
> > 
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