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Version: 2025

Managing the load balancing (dynamic load balancing on server)
The server that is hosting a HFSQL database engine can be very busy......
pszWDGetLastError: Message of last error
Retrieves the message corresponding to the last error that occurred......
WDContinueError: Resume on error
This function forces the execution to resume after an error......
wWDGetReturnValueType
Type of the return value of the last nWDExecute, nWDExecuteEx or nWDEvalue statement]......
DiskFile (Type of variable)
The DiskFile type is used to handle text files present on disk.
Restoring an HFSQL Client/Server database
A backup of a HFSQL Client/Server database can be restored at any time......
nWDSetCallbackNext
Set the "callback" called when using the WDKEY and RETURNWDKEY keywords for the next window to open (in C, Pascal and Visual Basic only)......
Transactions: Secure processes on HFSQL data files
This chapter presents the following topics......
Native SQL Server Connector license agreement
Filtering a data file, a view or a query
A filter is used to define by programming a selection of records corresponding to one or more criteria......
Result of a query in test mode
After its execution in test mode (see Running the query test), the result of the query can be......
fDirectoryExist (Function)
Checks the existence of a directory.
SQLReqExists (Function)
Checks the existence of a query.
SQLCol (Function)
Retrieves the content of the specified column from the query result, for the current line.
SQLFetch (Function)
Goes to the next row (i.e next record) of the query result.
SQLAssociate (Function)
Automatically associates each column of the query result with a control or with a variable of the application.
Joins between the data files of a select query
When several data files are used in a query, the query editor automatically searches for the links between these files described in the analysis......
Runtime log
The runtime log is the best way to identify the most used features of an application......
Handling Scheduler controls programmatically
A Scheduler control can be......
fIsImage (Function)
Used to find out whether a file found on disk or a file contained in a buffer corresponds to an image format recognized by WINDEV, WEBDEV or WINDEV Mobile.
fParentDir (Function)
Returns the path of the parent directory for the specified directory.
fBuildRelativePath (Function)
Returns the path to a file relative to a reference directory.
Transactions: Secure processes on HFSQL data files
This chapter presents the following topics......
SQLListSource (Function)
Lists the data sources declared on a local site.
SQLChangeConnection (Function)
Modifies the current connection.