ONLINE HELP
 WINDEVWEBDEV AND WINDEV MOBILE

Version: 2025

Items used in a select query
A query created in the query editor can contain several types of items...
Describing a query
Once a query is created, all the characteristics of this query can be modified at any time...
Example for creating a select query
This help page explains how to create two select queries...
Query creation mode: independent or embedded query
The query editor proposes two methods for creating a 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...
(No title )
Handling the versions of a window, report, query or project
When creating and developing the different elements of a project (window, query, report, project, ...
Operations in a Select query
The query editor allows you to perform operations on the values of an item...
Joins between the tables of a select query
When several tables are used in a query, the query editor automatically searches for the links between these tables described in the database schema...
Project comparator
Comparing two windows (two pages, two reports, two classes, ...
Optimizing the query execution
The query editor allows you to optimize the execution speed of one or more queries...
Creating a query
Two methods can be used to create a query...
Creating a select query
A select query (corresponding SQL statement...
Test of a query
The query editor allows you to run the test of query result...
Creating a combining query
A combining query (corresponding SQL statement: UNION) ...
Selection conditions of a query
The selection conditions of records are applied to the items used in the queries...
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...
Environment of the query editor
When creating a class in the code editor, the Constructor and Destructor methods are automatically created by default...
Creating 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...
Customizing the Switch controls
The Switch control is a 2-state Check Box control (on/off, true/false, yes/no)......
BankHolidayAdd (Function)
Indicates that a day (or a list of days) is a public holiday.
Handling List Box controls programmatically
WINDEV, WEBDEV and WINDEV Mobile allow you to programmatically handle List Box controls....
Constants for managing errors and exceptions
List of constants used by the functions for managing errors and exceptions....
Compressing frames (DSL, 3G, Edge, VPN, ...)
A frame is a packet ot data that flows through the network......
Error: Redefinition of syntax
The '<method>' methods of the '<derived class>' class and of the '<base class>' class do not have the same prototype......
Internal component description
The description of an internal component can opened at any time......
Report viewer: Proposing several reports
In the document preview, end users can......
BitwiseOR (Function)
Returns the result of the bitwise OR operation performed between two values.
Generating the LDM from the CDM
To associate a CDM (Conceptual Data Model) with a project, you must generate the associated LDM (Logical Data Model)......
Importing an HTML page into a WEBDEV site
WEBDEV allows you "suck up" the existing HTML pages......
I was using Visual Basic with WINDEV 5.5. How to proceed in WINDEV 2024?
You have the ability to use external languages with WINDEV......
WDTrans: Overview
WDTrans is a tool for canceling transactions......
GDPR: Concrete solutions
GDPR: General Data Protection Regulation...
Performance profiler
The performance profiler (also called Profiler) is used to check and optimize the execution time of your application......
Using several libraries in an application
A library is a WDL file that contains all the resources......