thomh

I am using the TJsonTextWriter to write my JSON string. Looking at the code I see this method which uses the WriteEscapedString method to escape the string. procedure TJsonTextWriter.WriteValue(const Value: string); begin inherited WriteValue(Value); if (Length(Value) = 0) and (EmptyValueHandling = TJsonEmptyValueHandling.Null) then Exit; WriteEscapedString(Value, True); end; But I cannot find an UnEscape JSON string method? Is there one? Thanks, Thom

Thank you. BTW, is there a method that you can use to unescape the whole JSON string and not just a certain value? // Thom

Hi, we have a bunch of customers running our Delphi coded RealThinClient server as a service in a domain controlled server environment. They have set Windows Update to check for updates but not to automatically install them. When the server does a Windows update check it happens often that our Delphi services stop responding. If we stop the services we cannot start them again until we restart the server. Something happens in a domain controlled server environment when this Windows update check is done that messes up the services. Our .Net services are not affected and keeps on running. Has anybody seen or heard of this problem and is there a solution? Thanks, Thom

Hi David, Delphi service that does nothing stops also. It might have something to do with how I start the service. This is straight from the RTC demo app. Is there a more "modern" way of starting the service? function ServiceStart(const aMachine, aService: String) : Boolean; var schm, schs: SC_Handle; ss: TServiceStatus; psTemp: PChar; dwChkP: DWord; begin ss.dwCurrentState := 1; schm := OpenSCManager(PChar(aMachine), nil, SC_MANAGER_CONNECT); if (schm > 0) then begin schs := OpenService(schm, PChar(aService), SERVICE_START or SERVICE_QUERY_STATUS); if (schs > 0) then begin psTemp := nil; if (StartService(schs, 0, psTemp)) then begin if (QueryServiceStatus(schs, ss)) then begin while (SERVICE_RUNNING <> ss.dwCurrentState) do begin dwChkP := ss.dwCheckPoint; Sleep(ss.dwWaitHint); if (not QueryServiceStatus(schs, ss)) then Break; if (ss.dwCheckPoint < dwChkP) then Break; end; end; end; CloseServiceHandle(schs); end; CloseServiceHandle(schm); end; Result := SERVICE_RUNNING = ss.dwCurrentState; end;

Hi, I have the following SQL which queries all DBs on a server: declare @SQL nvarchar(max) set @SQL = STUFF((SELECT ' UNION ALL ' + 'SELECT COUNT(DISTINCT DocNo) AS DocCount, ' + quotename(name,'''') + ' AS ClientDatabase FROM ' + quotename(name) + '.dbo.TestData WHERE Flags & 2 = 0 AND (Flags & 4 = 0 OR Flags & 128 = 128) AND Flags & 2048 = 0 AND Flags & 268435456 = 0' from sys.Databases WHERE name IN ('C003','C100','C200') FOR XML PATH(''), type).value('.','varchar(max)'),1,15,'') execute(@SQL) Using it in Microsoft SQL Server Management Studio in returns the correct result set but when I use the FireDAC TFDQuery it returns the following error on the Open command: [FireDAC][Phys][MSSQL]-308. Cannot open / define command, which does not return result sets. Hint: use Execute / ExecSQL method for non-SELECT commands Any ideas how to get this SQL statement to work in FireDAC? Thanks, Thom

Mystery solved. With this particular SQL statement, TFDQuery returns this error message when the result set is empty. [FireDAC][Phys][MSSQL]-308. Cannot open / define command, which does not return result sets. Hint: use Execute / ExecSQL method for non-SELECT commands // Thom

Hi haentschman, Thought TFDScript was for SQL commands like INSERT, UPDATE, etc. How would you write such a script and loop the result set using TFDScript? // Thom