ONLINE HELP
 WINDEV, WEBDEV 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...
JavaExecute (Example)
Usage example of the JavaExecute function
<WDPic variable>.DrawPolygon (Function)
Draws a polygon in a WDPic variable.
<picLayer variable>.DrawPolygon (Function)
Draws a polygon in a picLayer variable.
ReplicInfo (Function)
Returns information about a replication.
grSurfaceMarksCaption (Function)
Allows you to specify the mark caption for a Surface chart.
grScatter3DMarkCaption (Function)
Used to specify the mark caption for a 3D Scatter chart.
Format (Property)
The Format property is used to define the data format of a data file.
LogBackupDirectory (Property)
The LogBackupDirectory property is used to manage the backup directory of log files.
Help: Summary table
In a WINDEV application, users have multiple help features at their disposal: Tooltip. Status bar. Help window. Advanced tooltip. Help page. HLP file....
grCreate (Function)
Creates a specific type of chart.
MenuIsMarked (Example)
Usage example of the MenuIsMarked function
HDescribeFullTextIndex (Example)
Usage example of the HDescribeFullTextIndex function
fDir (Example)
Usage example of the fDir function
<Image variable>.DrawPolyline (Function)
Draws a line composed of multiple segments in an Image variable.
<Image>.DrawPolyline (Function)
Draws a line composed of multiple segments in an Image control.
<emailNotesSession variable>.SendMessage (Function)
Sends an email using the Lotus Notes protocol.
<Source>.ChangeDir (Function)
Changes the path to a data file (i.e. directory in which the file will be handled).
fGraphicFilter (Example)
Usage example of the fGraphicFilter function
FTPSize (Example)
Usage example of the FTPSize function
<WDPic variable>.DrawPolyline (Function)
Draws a line composed of multiple segments.
<picLayer variable>.DrawPolyline (Function)
Draws a line composed of multiple segments.
Native MariaDB Connector: Specific features
The Native MariaDB Connector creates "InnoDB" tables to support locks and transactions on a MariaDB database......
Native MySQL Connector: Specific features
The Native MySQL Connector (also called "Native MySQL Access") creates "InnoDB" tables to support locks and transactions on a MySQL database......
Analyzing dependencies and orphan images
To help you manage the navigation of the Web users in your sites, an advanced feature for analyzing the dependencies and the orphan images is available in WEBDEV......
<Image variable>.SaveGIF (Function)
Saves an image found in an Image variable: in a file in GIF format. in memory....
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