ONLINE HELP
 WINDEVWEBDEV AND WINDEV MOBILE

Version: 2026

Select query description window
The description window of a select query includes several sections...
Creating an insert query
An insert query (corresponding SQL statement...
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...
HSuggestKeyEnd (Function)
Finishes collecting information on executed queries.
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...
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.
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 defined 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...
HSuggestKey (Function)
Returns a list of keys to add to tables to improve query performance.
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) ...
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...
Creating a delete query
A delete query (corresponding SQL statement...
Code history
The code history is used to...
Selection conditions of a query
The selection conditions of records are applied to the items used in the queries...
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...
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...
HSuggestKeyStart (Function)
Starts collecting information on executed queries.
Environment of the query editor
When creating a class in the code editor, the Constructor and Destructor methods are automatically created by default...
Items used in a select query
A query created in the query editor can contain several types of items...
Creating an update query
An Update query (SQL UPDATE statement) is used to modify the records in a database file...
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...
Selection (Property)
The property Selection property is used to manage the selection.
DisplayCurrency (Property)
The DisplayCurrency property gets and sets the currency used when entering or displaying values in a "Currency + Euro" control.
SEO-ready page in session mode
In WEBDEV, there are two methods to develop a site......
CtDescribedOLEDBProvider (Property)
The CtDescribedOLEDBProvider property is used to get and set the name of the OLE DB provider (also called OLE DB server).
Shared information
The information entered when creating the files and the items is shared throughout the environment......
HChangeKey (Function)
Changes the browse item.
IWListDelete (Function)
Deletes an internal window found in the list of internal windows browsed by an Internal Window control.
Programming by preset action
Preset actions allow you to define the code of an event in a single click, without having to write one single line of code......
HReadSeekFirst (Function)
Sets the position on the first record whose value for a specific item is strictly equal to a sought value (exact-match search).
24. Displaying and linking pages
Deselects a shape in a Diagram Editor control....
HErrorStatusModification (Function)
Returns the status of a record during a modification conflict.
Batch processing: creation of executables, WDLs, components, etc.
WINDEV and WEBDEV allow you to perform multiple types of processes from a command line......
Assisted Application Development
The Assisted Application Development (AAD) is a permanent help in the environment. This help suggests actions whenever it is appropriate....
The Flex control
The Flex control is used to display a Flash® animation created by a Flex editor in a WEBDEV page......
CtDescribedDatabase (Property)
The CtDescribedDatabase property is used to set the OLE DB data source when connecting to a specific table via OLE DB.
CtOLEDBProvider (Property)
The CtOLEDBProvider property gets and sets the name of the OLE DB provider (also called OLE DB server).
HStatCalculate (Function)
Performs various statistical calculations on the file keys.
CtInitialCatalog (Property)
The CtInitialCatalog property is used to get the default database defined for the access.
CtExtendedInfo (Property)
The CtExtendedInfo property gets the additional information inserted into the database connection string.