BorlandTalk.com Borland discussion newsgroups   Archives   FAQ   Search   Memberlist   Usergroups   Register   Profile   Log in to check your private messages   Log in  TAgregate Expressions          BorlandTalk.com Forum Index -> Delphi Databases (Multi-Tier) View previous topic :: View next topic   Author Message Russell Weetch Guest Posted: Thu Aug 14, 2003 9:36 am    Post subject: TAgregate Expressions Does anyone know of a document/site that has examples of aggregate expressions? Can I do an if? sort of if field1 in '1,2,3' then sum(field2) thanks Russell Back to top Dave Rowntree Guest Posted: Thu Aug 14, 2003 11:12 am    Post subject: Re: TAgregate Expressions "Russell Weetch" <russell (AT) systematicmarketing (DOT) com> wrote: Quote: Does anyone know of a document/site that has examples of aggregate expressions? Can I do an if? sort of if field1 in '1,2,3' then sum(field2) No. TAggregate/TAggregateField allows you to perform summary operations on a/some fields(s) accross a group of records. The summary operators that can be used are well documented in help. It also provides examples of what is possible and what is not. Have a look at the TAggregate.IndexName and GroupingLevel for information on how to apply an aggregate to a particular set of records. -- Dave Rowntree Back to top Russell Weetch Guest Posted: Thu Aug 14, 2003 12:40 pm    Post subject: Re: TAgregate Expressions Thanks Dave pretty much as I though, just wanted to make sure I wasn't missing anything. One question, if I may. When you have IndexName and GroupingLevel set, I can only get the the value of the aggregate for the first grouping: table OrderTyp, Qty index "otIdx" OrderTyp grouping level = 1 aggregate Sum(Qty), groupinglevel = 1, indexname=otIdx data: ordertye qty 1 3 1 2 2 1 2 6 so for OrderTyp = 1 the result is 5 for OrderTyp = 2 the result is 7 However, when I access cds.Aggregates.Items[0] I can only get the result for OrderTyp = 1. Any help greatly appreciated. "Dave Rowntree" <daver (AT) spam_offbrookswood (DOT) co.uk> wrote Quote: "Russell Weetch" <russell (AT) systematicmarketing (DOT) com> wrote: Does anyone know of a document/site that has examples of aggregate expressions? Can I do an if? sort of if field1 in '1,2,3' then sum(field2) No. TAggregate/TAggregateField allows you to perform summary operations on a/some fields(s) accross a group of records. The summary operators that can be used are well documented in help. It also provides examples of what is possible and what is not. Have a look at the TAggregate.IndexName and GroupingLevel for information on how to apply an aggregate to a particular set of records. -- Dave Rowntree Back to top Russell Weetch Guest Posted: Thu Aug 14, 2003 2:22 pm    Post subject: Re: TAgregate Expressions Thanks again Dave. Ok, I see. Pity, it would have made it really easy if the value was indexed. best Russell "Dave Rowntree" <daver (AT) spam_offbrookswood (DOT) co.uk> wrote Quote: "Russell Weetch" <russell (AT) systematicmarketing (DOT) com> wrote: When you have IndexName and GroupingLevel set, I can only get the the value of the aggregate for the first grouping: table OrderTyp, Qty index "otIdx" OrderTyp grouping level = 1 aggregate Sum(Qty), groupinglevel = 1, indexname=otIdx data: ordertye qty 1 3 1 2 2 1 2 6 so for OrderTyp = 1 the result is 5 for OrderTyp = 2 the result is 7 However, when I access cds.Aggregates.Items[0] I can only get the result for OrderTyp = 1. The Aggregate shows the value for the group the CDS currently selected record belongs to. To see the value of OrderTyp 2, scroll onto a record that belongs to that group. -- Dave Rowntree 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 (Multi-Tier) 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.