ADODataSet deleting from joined table

Question

I have a Delphi app where I display a list of games that have been played from a query like this:

select  g.*, gt.id, gt.descr 
from GAMES g 
inner join game         


        

Answer 1

You need to set TADODataset's "Unique Table" property after opening your dataset.

ADODataset.Properties['Unique Table'].Value := 'GAMES';

Answer 2

You need to use the Unique Table dynamic property

ADOQuery1.Properties['Unique Table'].Value := 'GAMES';

From the MSDN ADO Documentation

If the Unique Table dynamic property is set, and the Recordset is the result of executing a JOIN operation on multiple tables, then the Delete method will only delete rows from the table named in the Unique Table property.