function PSGetCommandText: string; virtual;
virtual System::UnicodeString __fastcall PSGetCommandText();
Gets the SQL command to be executed by PSExecute.
If the provider's Options property includes poAllowCommandText, clients can supply an SQL command along with a call to TCustomProvider.GetRecords or TCustomProvider.Execute. This command is passed to the dataset by a call to PSSetCommandText, and subsequently executed by a call to PSExecute.
This method is an implementation of the IProviderSupport.PSGetCommandText method and, by default, returns an empty string, because TDataSet does not implement a provider by default. To use it, every TDataSet descendant must override it in its specific way.