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Version: 2026

Appendix 5: Configuring the server
Bloque entièrement ou partiellement un fichier externe....
HDescribeLink (Function)
Describes a link between two data files through programming.
Project elements
The project includes windows, reports, queries, help files, sets of procedures, ......
HClose (Function)
Closes a data file or all the data files opened by the current user: all the corresponding physical data files are closed for the current user.
Native MariaDB Connector: Programming with SQL functions
The SQL functions can be used to handle the MariaDB database......
Native PostgreSQL Connector: Programming with SQL functions
You can use SQL functions to handle the PostgreSQL database......
Reports & Queries software: WLanguage functions not supported
Some WLanguage functions are not available in Reports & Queries......
HListFile (Function)
Returns the list of files: current database schema. database schemas in progress (projects with multiple database schemas). a specific database schema recognized by the HFSQL engine. available on a connection via a Native Connector or an OLE DB driver. for a group of files defined in the data model editor....
<Source>.FilterIdentical (Function)
Defines and enables a filter used to find the exact value of a string item.
HReadNext (Function)
Sets the position on the next data file record according to a browse item.
HFileExist (Function)
Determines: whether a file exists, which means whether it was physically created (HCreation or HCreationIfNotFound). whether a view or a query was defined....
HFlush (Function)
Forces the operating system of the computer where the data files are found to write data onto the disk.
WDInst: installing additional elements
By default, only the files found in the "List of setup files" window are installed on the user computers......
HFree (Function)
Transforms the crossed records (HCross) into deleted records.
WDAdminHF: Scheduled task
The remote HFSQL administrator is used to define the scheduled tasks......
HReadSeek (Function)
Sets the position on the first record whose value for a specific item is greater than or equal to a sought value (generic search).
HFSQL views
An HFSQL view corresponds to a "memory image" of an HFSQL data file......
H.NumRec (Variable)
Contains the number of the physical record loaded in memory (which means the number of the last record read).
HInfoMemo (Function)
Returns the characteristics of binary and text memos.
HSetPosition (Function)
Sets the position on a record, based on the approximate position of one of its items.
HDelete (Function)
Deletes a record from a data file (query or view).
HOpenAnalysis (Function)
Opens an analysis in HFSQL Classic format.
UnloadWDL (Function)
Frees the library that was loaded in memory by LoadWDL.
HTransaction (Function)
Starts a transaction on the tables (HFSQL or accessed via a Native Connector) and creates the transaction table.
Errors while managing tables
When an HFSQL function fails (returns False for example), the corresponding error number is returned by HError......