ONLINE HELP
 WINDEVWEBDEV AND WINDEV MOBILE

Version: 2026

Creating a delete query
A delete query (corresponding SQL statement...
HSuggestKey (Function)
Returns a list of keys to add to data files to improve query performance.
Operations in a Select query
The query editor allows you to perform operations on the values of an item...
Selection conditions of a query
The selection conditions of records are applied to the items used in the queries...
HSuggestKeyEnd (Function)
Finishes collecting information on executed queries.
Project comparator
Comparing two windows (two pages, two reports, two classes, ...
Creating a query
Two methods can be used to create a query...
Items used in a select query
A query created in the query editor can contain several types of items...
Sort order of records found in a select query
To make the result of a query easier to read, the records can be sorted according to one or more items...
Handling the versions of a window, report, query or project
When creating and developing the different elements of a project (window, query, report, project, ...
Create an insert query
An insert query (corresponding SQL statement...
Carrying over the differences from an element to another one
The project comparator is used to compare two elements and to list the differences found...
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 defined in the analysis...
Code history
The code history is used to...
Environment of the query editor
Creating a select query
A select query (corresponding SQL statement...
Query creation mode: independent or embedded query
The query editor proposes two methods for creating a query...
HSuggestKeyStart (Function)
Starts collecting information on executed queries.
Describing a query
Once a query is created, all the characteristics of this query can be modified at any time...
Optimizing the query execution
The query editor allows you to optimize the execution speed of one or more queries...
Select query description window
The description window of a select query includes several sections...
Creating a combining query
A combining query (corresponding SQL statement: UNION) ...
Example for creating a select query
This help page explains how to create two select queries...
Modifying the values displayed in the result of a select query
In the result of a select query, you have the ability to only display...
Test of a query
The query editor allows you to run the test of query result...
Select query: Displaying the first/last n records
The editor of Select queries is used to limit the number of records that will be displayed in the result of the query.
Query: Displaying the records corresponding to a given period
When a "Date" item is found in the query, you have the ability to only select the records corresponding to a given period...
Creating an update query
An Update query (SQL UPDATE statement) is used to modify the records in a database file...
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...
ExecutionCompleted (Property)
The ExecutionCompleted property is used to determine whether the execution of a query or view (HFSQL Classic or Client/Server) is completed....
<Source>.ExtractMemo (Function)
Extracts the content of a binary memo item from an HFSQL file, a query or an HFSQL view to a physical file (on disk).
<Source>.ListFullTextIndex (Function)
Returns the list of full-text indexes of a file (a query or a view) recognized by the HFSQL engine.
FilterCondition (Property)
The FilterCondition property allows you to know the selection condition set by HFilter on a data file, HFSQL view or query.
HOut (Function)
Used to find out whether the record on which you want to be positioned is located outside the data file, filter, view or query.
HExtractMemo (Function)
Extracts the content of a binary memo item from an HFSQL file, a query or an HFSQL view to a physical file (on disk).
<Source>.Out (Function)
Allows you to find out whether the record on which you want to be positioned is located outside the data file, filter, view or query.
HTTPProgressBar (Function)
Displays a progress bar when: receiving the response to an HTTP request. sending an HTTP form (HTTPSendForm) or an HTTP query....
6. Editing a page: zoning mode
Programming charts
WINDEV, WEBDEV and WINDEV Mobile include a Chart control (that can be used in the window editor, page editor and report editor) as well as several functions used to create and handle charts......
The indexed controls
A control is an indexed control if it contains several controls with the same name......
<Source>.FileExist (Function)
Determines: whether a file exists, which means whether it was physically created (HCreation or HCreationIfNotFound). whether a view or a query was defined....
<Source>.NbRec (Function)
Returns the number of records in a file, query or HFSQL view: active records, crossed records, deleted records, etc.
FilterWithBounds (Property)
The FilterWithBounds property is used to determine if bounds have been specified for the filter implemented by HFilter on an HFSQL data file, view or query.
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....
HNbRec (Function)
Returns the number of records in a file, query or HFSQL view: active records, crossed records, deleted records, etc.
Pivot Table control in a report
The report editor allows you to create "Crosstab" reports......
OLEActivate (Function)
Edits an OLE object contained in an OLE control.
fReportsAndQueriesDir (Function)
Returns: the full path of the directory for the custom reports and queries. This directory corresponds to the directory of the reports and queries visible by the user who created them. the full path of the directory for the shared reports and queries. This directory corresponds to the directory of the reports and queries visible by all the application users....
Managing breakpoints
During a project test in the editor, breakpoints are used to automatically start the debugger from a given line......
<Source>.ToFile (Function)
Copies a data source (file, query, view, ...) to a physical HFSQL file with the same description. This file is neither encrypted nor password protected.
MySource (Reserved word)
MySource is used to handle the current data source (file, view or query) associated with a report or with a table based on a data file...
HToFile (Function)
Copies a data source (file, query, view, ...) to a physical HFSQL file with the same description. This file is neither encrypted nor password protected.
Handling an Image Editor control through programming
WINDEV allows you to handle an Image Editor control through programming......
3. Multi-criteria search
WINDEV Tutorial: WINDEV application: Managing data Lesson 3 - Multi-criteria search - 40 min