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- How to initialize a data source
HDataSourceKnown (Function) In french: HSourceDeDonnéesConnue Determines if a data source has been initialized. This function prevents errors such as "You called XXX . The YYY data source has not been initialized". Difference with HQueryExecuted: HDataSourceKnown determines if the data source is known to the HFSQL engine, regardless of its content. HQueryExecuted can only be used with queries. MyView is Data Source
IF HDataSourceKnown(MyView) = False THEN
HCreateView(MyView, CUSTOMER, "*", "NAME,CITY", "NAME]='A'", hViewDefault)
END
Syntax
<Result> = HDataSourceKnown(<Data source to check>)
<Result>: Boolean - True if the data source has been initialized,
- False otherwise. HErrorInfo returns more details about the problem.
<Data source to check>: Data Source Data Source variable to be checked. This data source can correspond to: - an external data file,
- an SQL query,
- a view.
Remarks How to initialize a data source The method used to initialize a data source depends on its content: For more details, see the help page on the Data Source variable type. Business / UI classification: Business Logic
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