You can only add Temporary rows (and add temporary columns, I think) to 
existing tables from a CustomAction.

DONG LEE wrote:
> Hi guys,
>
> So I am trying to edit MSI tables (component table, file table, ...) from a
> custom action while the MSI is being run.
> Following are the attempts I've made, and so far I have failed miserably.
> And I am attempting this because
> it needs to be customized after being shipped, in runtime based on
> customer's computer settings.
>
> 1. MsiGetActiveDatabase() to get an active database of the installer.
> 2. Use the following query string to open a view using
> MsiDatabaseOpenView().
> "UPDATE `Component` SET `Component`.`Attributes`='SOME_CONSTANT WHERE
> `Component`.`Component`=SOME_KEY_NAME"
> 3. Execute the view using MsiViewExecute(), but I get a vague error of
> ERROR_INSTALL_FAILURE from the function.
>
> I suspect that the error occured because the database was opened in
> read-only mode since I
> was trying to edit the MSI database that is being run.
>
> I used the same query string to attempt the same thing using WiRunSQL.vbs
> script included in the installer SDK, and
> it modified the record just fine.
>
> So is it possible at all to modify a database of a running MSI through a
> custom action?
> I've seen people using Wix SqlDatabase element as well as Wix SQL utility to
> do some sql works.
> Can I somehow use this to edit the database? And I can't use bootstrapper
> because of the complications in digital signing in the lab.
> Can I somehow use MsiRecord* api calls to achieve this? I wasn't sure if the
> functions can modify the database
> for the similar reason.
>
> Thanks!!
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------------------------------------------------------------------------------
The NEW KODAK i700 Series Scanners deliver under ANY circumstances! Your
production scanning environment may not be a perfect world - but thanks to
Kodak, there's a perfect scanner to get the job done! With the NEW KODAK i700
Series Scanner you'll get full speed at 300 dpi even with all image 
processing features enabled. http://p.sf.net/sfu/kodak-com
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