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...
Copying controls from the window editor
The controls can be copied from the window editor......
Copying controls from the report editor
The controls can be copied from the report editor......
Copying controls from the page editor
The controls can be copied from the page editor......
22 tips for optimizing the speed of a site
When a site is on-lined, one of the main expectations of Web users is speed......
SQL set operations: UNION, UNION ALL and INTERSECT
SQL allows performing set operations on groups of files......
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)......
Binding a List Box control to an item
A List Box control can be bound to an item in a data file, query, etc....
Looper control linked to a data file
A Looper control can be used to display the content of a data file or query......
<Source>.ListKey (Function)
Returns the list of keys found in a file (query or view) recognized by the HFSQL engine.
<Source>.Modify (Function)
Modifies the specified record or the record found in memory in the data file (query or view).
<Source>.RetrieveItem (Function)
Returns the content of an item found in the current record (in the data file, view, query, ...).
IWListDisplay (Function)
Refreshes the display of an "Internal window" control with automatic iteration on a data file or query.
SQLGetTextMemo (Function)
Retrieves the content of a Text Memo column found in the query result, for the current line.
HRetrieveItem (Function)
Returns the content of an item found in the current record (in the data file, view, query, ...).
HListKey (Function)
Returns the list of keys found in a file (query or view) recognized by the HFSQL engine.
HModify (Function)
Modifies the specified record or the record found in memory in the data file (query or view).
Serialize (Function)
Transforms the following elements into a specific format: a structure (and its subelements), a class (and its subelements), an array (including the associative arrays), a queue, a stack, a list....
Customizing keyboard shortcuts
The different editors in WINDEV, WEBDEV and WINDEV Mobile include many options that can be used directly via keyboard shortcuts......
<Source>.RecordToString (Function)
Converts the content of the current record to string (in a data file, HFSQL view, query, etc.).
HRecordToString (Function)
Converts the content of the current record to string (in a data file, HFSQL view, query, etc.).
InitialFile (Property)
The InitialFile property is used to get the original name of the data file associated to an item in a query.
FileToMemoryList (Function)
Populates a List Box or Combo Box control programmatically with the records from a data file or query.
HExportJSONString (Function)
Exports the records from a data file (HFSQL or OLE DB), view or query to a JSON string.
<HFSQL file>.ExportJSONString (Function)
Exports the records from a data file (HFSQL or OLE DB), view or query to a JSON string.
Image editor
WINDEV, WEBDEV and WINDEV Mobile include an image editor......