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Version: 2025

Report based on an HFSQL view
A report based on an HFSQL view is used to print records from an HFSQL Classic or Client/Server view...
Remote HFSQL Administrator: Overview
The remote HFSQL administrator is a WEBDEV site installed with the WEBDEV application server and used to remotely manage the HFSQL Client/Server databases installed on the Web server...
<HFSQL connection>.CheckIndexAsynchronous (Function)
Checks that the data contained in the index file (.NDX file) correctly references the data contained in the HFSQL Client/Server table (.FIC file).
This function is only available in subscription-based versions, starting with WINDEV Suite 2025 - Update 2.
<HFSQL connection>.CheckMemoAsynchronous (Function)
Checks the structural integrity of memos in an HFSQL Client/Server table.
This function is only available in subscription-based versions, starting with WINDEV Suite 2025 - Update 2.
HFSQL functions (prefix syntax)
List of functions for HFSQL management
Managing the HFSQL contexts in the windows and in the reports
An HFSQL context contains information relative to the data used...
HFSQL functions
List of functions for HFSQL management
HFSQL Client/Server functions
Several HFSQL functions are used to manage the HFSQL Client/Server data...
HFSQL Client/Server functions (prefix syntax)
Several HFSQL functions are used to manage the HFSQL Client/Server data...
<Connection variable>.TransactionSavepoint (Function)
Declares a transaction savepoint.
<Source>.DescribeFile (Function)
Describes a table programmatically.
HTransactionSavepoint (Function)
Declares a transaction savepoint.
<Source>.ListStopWord (Function)
Returns the list of stop words used by a full-text index.
HTransactionRollbackToSavepoint (Function)
Rolls the transaction back to the savepoint.
HDescribeFile (Function)
Describes a table programmatically.
fDataDir (Function)
Returns the full path of the directory of HFSQL tables specified by the user when installing the application.
Application triggers
A trigger is a WLanguage procedure automatically called by the HFSQL engine whenever a modification is performed (addition, deletion, modification, ...) on a record of a table.
HListItem (Function)
Returns the list of items:
HCheckIndexAsynchronous (Function)
Checks that the data contained in the index file (.NDX file) correctly references the data contained in the HFSQL Client/Server table (.FIC file).
This function is only available in subscription-based versions, starting with WINDEV Suite 2025 - Update 2.
WDHFDiff: Presentation
WDHFDiff is a tool used to compare HFSQL tables...
DB2 Native Connector: Features and notes
The following paragraphs present the main aspects and specific features of the Native DB2 Connector...
Managing databases in WINDEV Java applications
This document presents the different access modes to databases from a WINDEV Java application...
Link functions
Link functions are used to link the interface with the tables and vice versa. These functions are as follows:
<Source>.CheckIndex (Function)
Checks whether the data found in the index table (.NDX file) properly refers the data found in the table (.FIC file).
<Source>.QueryExecuted (Function)
Determines if a query has been executed.
HDescribeFullTextIndex (Function)
Describes a full-text index of table created programmatically.
HExecuteQueryAsynchronous (Function)
Executes a SELECT query asynchronously.
<Source>.ListItem (Function)
Returns the list of items in a table (query or view) recognized by the HFSQL engine. The tables defined by HDeclare, HDeclareExternal and HDescribeFile are taken into account.
<Source>.ListFullTextIndex (Function)
Returns the list of full-text indexes of a file (a query or a view) recognized by the HFSQL engine.
Native Oracle Connector for WINDEV and WEBDEV
WINDEV and WEBDEV offer an optional Native Oracle Connector (also called Native Oracle Access...
Comparison operators
The comparison operators can be divided into several categories...
HCheckStructure (Function)
Defines the mode for comparing tables.
Filtering a table, a view or a query
A filter is used to define through programming a selection of records corresponding to one or more criteria...
<Source>.CheckMemo (Function)
Checks the structural integrity of memos in an HFSQL table.
Limitations of WINDEV, WEBDEV and WINDEV Mobile
A structure is a custom type of data...
HQueryExecuted (Function)
Determines if a query has been executed.
HCheckMemo (Function)
Checks the structural integrity of memos in an HFSQL table.
<Source>.ExportJSON (Function)
Exports the records found in a table (HFSQL or OLE DB), view or query to a JSON file.
<Connection variable>.TransactionEnd (Function)
Validates the current transaction:
  • the modifications performed on the table since the start of transaction (HTransactionStart) are validated.
  • the transaction file is deleted (if the transaction is the last transaction in progress for a network application)
  • the records locked in read-only by the transaction are unlocked.
File Description (Variable type)
The File Description variable is used to programmatically describe tables.
POUR TOUT / POUR ALL instruction (table browsing)
Training FOR ALL instruction can be used to perform different types of runs...
HTransactionFree (Function)
Transforms all "in transaction" records into "normal" records if they do not belong to a transaction currently in progress.
Type of field: Secure password
"Password" items are used to securely store passwords by using a salt and a hash algorithm...
<Source>.ExecuteQueryAsynchronous (Function)
Executes a SELECT query asynchronously.
SQL commands available in an SQL query
WINDEV allows you to easily run queries in SQL code...
HTransactionInterrupted (Function)
Used to find out whether a transaction was interrupted (the transaction was neither validated nor canceled).
<Source>.ExecuteQuery (Function)
Declares a query created in the query editor to the HFSQL engine and runs this query.
HCheckMemoAsynchronous (Function)
Checks the structural integrity of memos in an HFSQL Client/Server table.
This function is only available in subscription-based versions, starting with WINDEV Suite 2025 - Update 2.
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...
HTransactionEnd (Function)
Validates the current transaction:
  • the modifications performed on the table since the start of transaction (HTransactionStart) are validated.
  • the transaction file is deleted (if the transaction is the last transaction in progress for a network application)
  • the records locked in read-only by the transaction are unlocked.
HExportJSON (Function)
Exports the records found in a table (HFSQL or OLE DB), view or query to a JSON file.
HCheckIndex (Function)
Checks whether the data found in the index table (.NDX file) properly refers the data found in the table (.FIC file).
<Connection variable>.TransactionRollbackToSavepoint (Function)
Rolls the transaction back to the savepoint.
Manipulating a database from a Java application
You can start developing your application as soon as the WINDEV project is defined as being a Java project...
<Source>.ExportJSONString (Function)
Exports the records from a table (HFSQL or OLE DB), view, or query to a JSON string.
<Source>.TransactionFree (Function)
Transforms all "in transaction" records into "Normal" records if they do not belong to an ongoing transaction.
HListStopWord (Function)
Returns the list of stop words used by a full-text index.
<Source>.StatNbRecRange (Function)
Returns an estimate regarding the number of entries for a given key item in a given interval of values.
HExportJSONString (Function)
Exports the records from a table (HFSQL or OLE DB), view, or query to a JSON string.
HStatNbRecRange (Function)
Returns an estimate regarding the number of entries for a given key item in a given interval of values.
Native DB2 Connector for WINDEV and WEBDEV
WINDEV and WEBDEV offer an optional Native Connector to DB2...
HExecuteQuery (Function)
Declares a query created in the query editor to the HFSQL engine and runs this query.
<Source>.CheckStructure (Function)
Defines the mode for comparing tables.
HDescribeItem (Example)
Usage example of the HDescribeItem function
1. Analysis: Database structure
When a WINDEV, WEBDEV or WINDEV Mobile project uses data files, it must be associated...
SCM administrator: available tools
The SCM administrator (Source Code Manager) proposes several tools to manage and optimize the SCM...
Creating a replication
To understand the operating mode of ReplicEdit, we are going to create a replication by using...
Link Description (Type of variable)
A Link Description variable is used to describe a link between two data files through programming.
Project description: Files tab
The project description window allows you to configure various elements of your project......
MemoryToFile (Function)
Automatically initializes the memory value of the items for the current file record with the values...
1. Application overview
WINDEV Mobile tutorial: Developing an Android and iOS application Lesson 1 - Application overview...
SQL query (WLanguage type)
The "SQL query" type is used to write an SQL query in the WLanguage code.
Logical Data Model (LDM)
A Logical Data Model (LDM) is used to describe the data structures (files, items, ......
External language: Programming in Pascal
We are going to call the elements developed in WINDEV (project, windows, ......
The "Internal report" control
...The "Internal report" controls are used to print several reports (secondary reports) in a single...
FullTextIndex description (Type of variable)
A FullTextIndex description variable is used to describe one or more full-text indexes...
SQLTable (Function)
Transfers the result of a query to a Table control populated programmatically (a List Box or Combo...
Utility components
WINDEV includes several utility components that allow you to handle data directly......
Native PostgreSQL Connector: Specific features and remarks
Remarks and specific features of Native PostgreSQL Connector......
H.NbRetry (Variable)
Indicates the number of attempts for locking the file or the record before giving control back...
WINDEV Mobile: Overview
WINDEV Mobile is a development environment for PC that allows you to develop......
Automatic assisted universal replication
The automatic assisted replication is used to easily implement a replication on an existing...
Compression (Property)
The Compression property gets and sets the data compression mode.
ListView control linked to a data file (or to a query)
A ListView control can be used to display the content of a data file (or the content of a query)......
WINDEV 2024 Tutorial - Table of contents
WEBDEV 2024 Tutorial - Table of contents
Constants for manging the replication
List of constants used by the functions for managing the replication....