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...
Native Sybase Connector: Specific features and remarks
The following paragraphs present the main aspects and specific features of the Native Sybase Connector (also called Native Sybase Access)......
sfProcessWorkItemRequest (Type of variable)
The sfProcessWorkItemRequest type is used to describe a query for processing a task to submit to SFExecuteProcess...
FileToArray (Function)
Fills an array of classes or structures with the content of an HFSQL data file or query.
New Features brochure - Version 27: Common new features
New features in WINDEV/WEBDEV/WINDEV Mobile 27 presented in the New Features brochure....
<Source>.ActivateFilter (Function)
Enables the filter that was previously created for the specified data file (view or query).
<Source>.Alias (Function)
Creates a logical alias of a data file (or query) or cancels all existing aliases.
SQLInfo (Function)
Initializes the different SQL variables with information relative to the last query run.
HActivateFilter (Function)
Enables the filter that was previously created for the specified data file (view or query).
SQLFetch (Function)
Goes to the next row (i.e next record) of the query result.
SQLCodeExecuted (Property)
The SQLCodeExecuted property gets the SQL code of a query after replacing the parameters with a value.
<Source>.RetrieveItem (Function)
Returns the content of an item found in the current record (in the table, view, query, ...).
HRetrieveItem (Function)
Returns the content of an item found in the current record (in the table, view, query, ...).
<Source>.Modify (Function)
Modifies the specified record or the record found in memory in the table (query or view).
HModify (Function)
Modifies the specified record or the record found in memory in the table (query or view).
HListKey (Function)
Returns the list of keys in a table (query or view) recognized by the HFSQL engine.
<Source>.ListKey (Function)
Returns the list of keys in a table (query or view) recognized by the HFSQL engine.
WDSQL: Creating a SQL query
Once the connection to the database is established, WDSQL allows you to create different types of SQL queries......
Filtering a data file, a view or a query
A filter is used to define by programming a selection of records corresponding to one or more criteria......
Input suggestions in an Edit control
Implementing input suggestions in an Edit control is very simple......