BorlandTalk.com Borland discussion newsgroups   Archives   FAQ   Search   Memberlist   Usergroups   Register   Profile   Log in to check your private messages   Log in  Sorting calculated fields          BorlandTalk.com Forum Index -> Delphi Databases (dbExpress) View previous topic :: View next topic   Author Message Yew Mun Tai Guest Posted: Fri Feb 25, 2005 3:29 am    Post subject: Sorting calculated fields Hello, I need to do sorting on a calculated field. I understand that it's not possible and that I should change the field type to fkInternalCalc. If I do that, where and how do I do the calculation and set the value for the field? Thanx Back to top Bill Todd Guest Posted: Fri Feb 25, 2005 2:07 pm    Post subject: Re: Sorting calculated fields Use the OnCalcFields event just as with a calculated field. -- Bill Todd (TeamB) TeamB cannot answer questions received via email Back to top Yew Mun Tai Guest Posted: Sat Feb 26, 2005 8:28 am    Post subject: Re: Sorting calculated fields Thanx. I've done that, but I encounter the below error msg. Project Project1.exe raised exception class EDatabasaeError with message 'Field 'GroupName' cannot be modified'. Process stopped. Use Step to Run or continue. GroupName is the name of the fkInternalCalc field. I am using Delphi 7. "Bill Todd" <no (AT) no (DOT) com> wrote Quote: Use the OnCalcFields event just as with a calculated field. -- Bill Todd (TeamB) TeamB cannot answer questions received via email Back to top Bill Todd Guest Posted: Sat Feb 26, 2005 2:01 pm    Post subject: Re: Sorting calculated fields Did you create the internal calculated field with the Fields Editor? Did you follow all of the instructions on page 29-11 of the Developer's Guide? -- Bill Todd (TeamB) TeamB cannot answer questions received via email Back to top Yew Mun Tai Guest Posted: Mon Feb 28, 2005 1:54 am    Post subject: Re: Sorting calculated fields It was a calculated field. I changed it's type to internal calculated in the object inspector. And no, I forgot about the developer's guide. Will do so now. "Bill Todd" <no (AT) no (DOT) com> wrote Quote: Did you create the internal calculated field with the Fields Editor? Did you follow all of the instructions on page 29-11 of the Developer's Guide? -- Bill Todd (TeamB) TeamB cannot answer questions received via email Back to top Yew Mun Tai Guest Posted: Mon Feb 28, 2005 2:22 am    Post subject: Re: Sorting calculated fields I want to add that the field was working fine when it was a calculated field. It was after I decide to sort by that field and changed the type to fkInternalCalc that problems occur. "Yew Mun Tai" <yewmun (AT) airquace (DOT) com> wrote Quote: It was a calculated field. I changed it's type to internal calculated in the object inspector. And no, I forgot about the developer's guide. Will do so now. "Bill Todd" <no (AT) no (DOT) com> wrote in message news:4220814a$1 (AT) newsgroups (DOT) borland.com... Did you create the internal calculated field with the Fields Editor? Did you follow all of the instructions on page 29-11 of the Developer's Guide? -- Bill Todd (TeamB) TeamB cannot answer questions received via email Back to top Yew Mun Tai Guest Posted: Mon Feb 28, 2005 2:51 am    Post subject: Re: Sorting calculated fields I have solved the problem by just creating a new field from fields editor instead of just changing the type in the object inspector. Thanx. "Yew Mun Tai" <yewmun (AT) airquace (DOT) com> wrote Quote: I want to add that the field was working fine when it was a calculated field. It was after I decide to sort by that field and changed the type to fkInternalCalc that problems occur. "Yew Mun Tai" <yewmun (AT) airquace (DOT) com> wrote in message news:42227899 (AT) newsgroups (DOT) borland.com... It was a calculated field. I changed it's type to internal calculated in the object inspector. And no, I forgot about the developer's guide. Will do so now. "Bill Todd" <no (AT) no (DOT) com> wrote in message news:4220814a$1 (AT) newsgroups (DOT) borland.com... Did you create the internal calculated field with the Fields Editor? Did you follow all of the instructions on page 29-11 of the Developer's Guide? -- Bill Todd (TeamB) TeamB cannot answer questions received via email Back to top Display posts from previous: All Posts1 Day7 Days2 Weeks1 Month3 Months6 Months1 Year Oldest FirstNewest First         BorlandTalk.com Forum Index -> Delphi Databases (dbExpress) All times are GMT Page 1 of 1   Jump to: Select a forum C++ Builder Newsgroups----------------C++ BuilderC++ Builder (ActiveX)C++ Builder (Announcements)C++ Builder (Command Line Tools)C++ Builder DatabasesC++ Builder Databases (ADO)C++ Builder Databases (Desktop)C++ Builder Databases (InterBase Express)C++ Builder Databases (Multi-Tier)C++ Builder Databases (SQL Servers)C++ Builder (Graphics)C++ Builder (IDE)C++ Builder (Internet)C++ Builder (Internet Socket)C++ Builder (Internet Web)C++ Builder (Jobs)C++ Builder (Language)C++ Builder (Language C++)C++ Builder (Compatibility with MFC)C++ Builder (Native API)C++ Builder (Non-Technical)C++ Builder (Students)C++ Builder (Third Party Tools)C++ Builder (Upgrade)C++ Builder (VCL)C++ Builder (VCL Components Usage)C++ Builder (VCL Components Development)C++ Builder (VCL Usage)C++ Builder (WinAPI)C++ Builder Installation Delphi Newsgroups----------------Delphi (General)Delphi ActiveX Controls UsageDelphi ActiveX Controls DevelopmentDelphi As400Delphi DatabasesDelphi Databases (ADO)Delphi Databases (dbExpress)Delphi Databases (Desktop)Delphi Databases (InterBase Express)Delphi Databases (Multi-Tier)Delphi Databases (SQL Servers)Delphi DeploymentDelphi GraphicsDelphi IDEDelphi InternationalizationDelphi InternetDelphi Internet Isapi-WebBrokerDelphi Internet WebSnapDelphi Internet WinsockDelphi JobsDelphi Language BASMDelphi Language ObjectPascalDelphi Model Driven Architecture (General)Delphi Model Driven Architecture (Third Party)Delphi MultimediaDelphi Native APIDelphi Non-TechnicalDelphi ObjectPascalDelphi OLE AutomationDelphi OO designDelphi OpenToolsAPIDelphi Reporting-ChartingDelphi RTLDelphi StudentsDelphi TeamSourceDelphi Thirdparty ToolsDelphi Thirdparty Tools (General)Delphi Thirdparty Tools (IntraWeb)Delphi Thirdparty Tools (RaveReports)Delphi UpgradeDelphi VCLDelphi VCL ComponentsDelphi VCL Components UsingDelphi VCL Components WritingDelphi WebServices SOAPDelphi WinAPIDelphi XMLDelphi Installationcomp.lang.pascal.delphi.components.misccomp.lang.pascal.delphi.components.usagecomp.lang.pascal.delphi.components.writingcomp.lang.pascal.delphi.databasescomp.lang.pascal.delphi.misccomp.sources.delphi JBuilder Newsgroups----------------JBuilderJBuilder AnnouncementsJBuilder Applet IssuesJBuilder As400JBuilder CompilerJBuilder CORBA/RMIJBuilder DatabasesJBuilder DB SwingJBuilder DebuggerJBuilder DeploymentJBuilder DocumentationJBuilder EnterpriseJBuilder HandheldJBuilder IDEJBuilder JavaJBuilder JavaAPIJBuilder Java LanguageJBuilder Java SwingJBuilder Java BeansJBuilder Java Beans UsageJBuilder Java Beans DevelopmentJBuilder JBCLJBuilder JDataStoreJBuilder JobsJBuilder LinuxJBuilder MacintoshJBuilder & MobileSetJBuilder MultiLingual AppsJBuilder Non-TechnicalJBuilder OpenToolsJBuilder Servlets (JSP)JBuilder StudentsJBuilder Team DevelopmentJBuilder Thirdparty ToolsJBuilder UpgradeJBuilder Installation InterBase Newsgroups----------------InterBaseInterBase Bug DiscussionInterBase GeneralInterBase IBConsoleInterBase OpenSourceInterBase ReplicationInterBase SQLInterBase ThirdpartyInterBase Installation Miscellaneous Borland Newsgroups----------------AppCenterAppServerEnteraVisiBroker  You cannot post new topics in this forum You cannot reply to topics in this forum You cannot edit your posts in this forum You cannot delete your posts in this forum You cannot vote in polls in this forum Powered by phpBB © 2001, 2006 phpBB Group SEO toolkit © 2004-2006 webmedic.