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  • Deleting a data file
  • Names of files and directories on the LINUX server
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Stored procedures
Deletes the HFSQL data files (.fic, .ndx, .ftx and .mmo files if they exist) from the server.
Versions 17 and later
iPhone/iPad This function is now available for iPhone/iPad applications.
New in version 17
iPhone/iPad This function is now available for iPhone/iPad applications.
iPhone/iPad This function is now available for iPhone/iPad applications.
Versions 18 and later
Universal Windows 10 App This function is now available in Windows Store apps mode.
New in version 18
Universal Windows 10 App This function is now available in Windows Store apps mode.
Universal Windows 10 App This function is now available in Windows Store apps mode.
Remark: From version 19, HFSQL is the new name of HyperFileSQL.
Versions 19 and later
Android This function is now available for Android applications.
Android Widget This function is now available in Android Widget mode.
WINDEVJava This function is now available for the Java applications.
New in version 19
Android This function is now available for Android applications.
Android Widget This function is now available in Android Widget mode.
WINDEVJava This function is now available for the Java applications.
Android This function is now available for Android applications.
Android Widget This function is now available in Android Widget mode.
WINDEVJava This function is now available for the Java applications.
Versions 21 and later
Universal Windows 10 App This function is now available in Universal Windows 10 App mode.
New in version 21
Universal Windows 10 App This function is now available in Universal Windows 10 App mode.
Universal Windows 10 App This function is now available in Universal Windows 10 App mode.
Example
MyConnection is Connection
 
// Deletes data files from the server
HDeleteFile(MyConnection, ".\backup\customerfile_bck.fic")
WINDEVWEBDEV - Server codeWindows MobileHFSQL Client/Server
Ct_test is Connection
 
IF HDeleteFile(Ct_test, ".\Customer.FIC") = False THEN
Error(HErrorInfo())
END
Syntax
<Result> = HDeleteFile(<Connection> , <Data file path> [, <Options>])
<Result>: Boolean
  • True if the data file was deleted,
  • False if an error occurred (the data file does not exist on the server for example). HError is used to identify the error.
<Connection>: Character string (with or without quotes) or Connection variable
Connection in which the data file must be deleted. This connection corresponds to:
<Data file path>: Character string (with quotes)
Physical name and path of the data file to delete. The path is relative to the database: the name of the database must not be specified in the path. The ".fic" extension of the data file must be specified.
<Options>: Optional Integer constant (or combination of constants)
By default, when deleting a data file:
  • the files corresponding to the logs are not deleted,
  • the files corresponding to the transactions are deleted.
This parameter is used to modify this behavior:
hKeepTRSKeeps the transaction file associated with the deleted data file.
hDestroyLinkDeletes all links related to the deleted data file.
hDeleteLogDeletes the Log file and all the logged operations associated with the deleted data file.
Remarks

Deleting a data file

The data file can be deleted only if it is not currently used (which means if it is not used by a query, a view, another window, a thread or a component with independent HFSQL context).
The data file is automatically closed in the HFSQL context that calls HDeleteFile. A WLanguage error occurs if the data file is used in a context or by an application.

Names of files and directories on the LINUX server

On a LINUX server, the name of data files (.fic, .ftx, .ndx and .mmo files if they exist) must be written in lowercase and they must not contain any accented characters.
Component : wd250hf.dll
See also
Minimum version required
  • Version 9
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