BorlandTalk.com Borland discussion newsgroups   Archives   FAQ   Search   Memberlist   Usergroups   Register   Profile   Log in to check your private messages   Log in  How to stop a query?          BorlandTalk.com Forum Index -> Delphi Databases (SQL Servers) View previous topic :: View next topic   Author Message Vander Guest Posted: Fri Aug 20, 2004 2:30 pm    Post subject: How to stop a query? Hi all Win98, Delphi5, Interbase/Firebird, Zeos components I'd like to know if there is a way to stop an executing query. For example: I could show a modal form with a "Cancel" button, then start the query. If the user want to stop it, just press the button. Is it possible to do it using a second thread? How to implement? Thank you Vander Back to top Martijn Tonies Guest Posted: Fri Aug 20, 2004 3:21 pm    Post subject: Re: How to stop a query? Hi, Quote: Win98, Delphi5, Interbase/Firebird, Zeos components I'd like to know if there is a way to stop an executing query. For example: I could show a modal form with a "Cancel" button, then start the query. If the user want to stop it, just press the button. Is it possible to do it using a second thread? How to implement? InterBase 6.5 and up has a query-cancel API. This works very well. Firebird doesn't have this. I don't know if Zeos exposes this functionality. -- With regards, Martijn Tonies Database Workbench - developer tool for InterBase, Firebird, MySQL & MS SQL Server. Upscene Productions http://www.upscene.com Back to top Vander Guest Posted: Fri Aug 20, 2004 4:09 pm    Post subject: Re: How to stop a query? Thanks Martijn... Vander Quote: InterBase 6.5 and up has a query-cancel API. This works very well. Firebird doesn't have this. I don't know if Zeos exposes this functionality. -- With regards, Martijn Tonies Database Workbench - developer tool for InterBase, Firebird, MySQL & MS SQL Server. Upscene Productions http://www.upscene.com Back to top Craig Stuntz [TeamB] Guest Posted: Fri Aug 20, 2004 5:09 pm    Post subject: Re: How to stop a query? Martijn Tonies wrote: Quote: I don't know if Zeos exposes this functionality. As long as you can get a statement handle, you can just call isc_dsql_free_statement without needing it wrapped by your query components. Also, note that there are two parts to cancelling SELECTs. During execution, you need to use isc_dsql_free_statement. But during fetching result sets you just have to stop fetching. -Craig -- Craig Stuntz [TeamB] . Vertex Systems Corp. . Columbus, OH Delphi/InterBase Weblog : http://blogs.teamb.com/craigstuntz How to ask questions the smart way: http://www.catb.org/~esr/faqs/smart-questions.html Back to top Vander Guest Posted: Fri Aug 20, 2004 6:30 pm    Post subject: Re: How to stop a query? That's the point: How can I get a statement handle? If the program call a query (a SELECT for example) it wait for the query results and we can't call any statement! Is there a way? Vander "Craig Stuntz [TeamB]" <cstuntz (AT) nospam (DOT) please [a.k.a. vertexsoftware.com]> escreveu na mensagem news:41263055$2 (AT) newsgroups (DOT) borland.com... Quote: Martijn Tonies wrote: I don't know if Zeos exposes this functionality. As long as you can get a statement handle, you can just call isc_dsql_free_statement without needing it wrapped by your query components. Also, note that there are two parts to cancelling SELECTs. During execution, you need to use isc_dsql_free_statement. But during fetching result sets you just have to stop fetching. -Craig -- Craig Stuntz [TeamB] . Vertex Systems Corp. . Columbus, OH Delphi/InterBase Weblog : http://blogs.teamb.com/craigstuntz How to ask questions the smart way: http://www.catb.org/~esr/faqs/smart-questions.html Back to top Vander Guest Posted: Fri Aug 20, 2004 6:33 pm    Post subject: Re: How to stop a query? Hi Quote: As long as you can get a statement handle, you can just call isc_dsql_free_statement without needing it wrapped by your query components. Is there a way to get a statement handle in this case? Thanks Vander Quote: Also, note that there are two parts to cancelling SELECTs. During execution, you need to use isc_dsql_free_statement. But during fetching result sets you just have to stop fetching. -Craig -- Craig Stuntz [TeamB] . Vertex Systems Corp. . Columbus, OH Delphi/InterBase Weblog : http://blogs.teamb.com/craigstuntz How to ask questions the smart way: http://www.catb.org/~esr/faqs/smart-questions.html Back to top Martijn Tonies Guest Posted: Fri Aug 20, 2004 6:37 pm    Post subject: Re: How to stop a query? Quote: As long as you can get a statement handle, you can just call isc_dsql_free_statement without needing it wrapped by your query components. Is there a way to get a statement handle in this case? That depends on the Zeos library - you need to get the native InterBase handle for the statement. -- With regards, Martijn Tonies Database Workbench - developer tool for InterBase, Firebird, MySQL & MS SQL Server. Upscene Productions http://www.upscene.com Back to top Vander Guest Posted: Fri Aug 20, 2004 6:46 pm    Post subject: Re: How to stop a query? Sorry my mistake, the message was sent twice. "Vander" <vander (AT) pucrs (DOT) br> escreveu na mensagem news:41264379$1 (AT) newsgroups (DOT) borland.com... Quote: Hi As long as you can get a statement handle, you can just call isc_dsql_free_statement without needing it wrapped by your query components. Is there a way to get a statement handle in this case? Thanks Vander Also, note that there are two parts to cancelling SELECTs. During execution, you need to use isc_dsql_free_statement. But during fetching result sets you just have to stop fetching. -Craig -- Craig Stuntz [TeamB] . Vertex Systems Corp. . Columbus, OH Delphi/InterBase Weblog : http://blogs.teamb.com/craigstuntz How to ask questions the smart way: http://www.catb.org/~esr/faqs/smart-questions.html 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 (SQL Servers) 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.