ONLINE HELP
 WINDEVWEBDEV AND WINDEV MOBILE

Version: 2025

Handling the versions of a window, report, query or project
When creating and developing the different elements of a project (window, query, report, project, ...
Creating a query
Two methods can be used to create a query...
Creating an update query
An Update query (SQL UPDATE statement) is used to modify the records in a database file...
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...
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...
Select query description window
The description window of a select query includes several sections...
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...
Test of a query
The query editor allows you to run the test of query result...
Describing a query
Once a query is created, all the characteristics of this query can be modified at any time...
Query creation mode: independent or embedded query
The query editor proposes two methods for creating a 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 described in the database schema...
Project comparator
Comparing two windows (two pages, two reports, two classes, ...
Creating an insert query
An insert query (corresponding SQL statement...
Items used in a select query
A query created in the query editor can contain several types of items...
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.
Creating a combining query
A combining query (corresponding SQL statement: UNION) ...
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...
Example for creating a select query
This help page explains how to create two select queries...
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...
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...
HSuggestKeyEnd (Function)
Finishes collecting information on executed queries.
Creating a select query
A select query (corresponding SQL statement...
Creating a delete query
A delete query (corresponding SQL statement...
Optimizing the query execution
The query editor allows you to optimize the execution speed of one or more queries...
Environment of the query editor
When creating a class in the code editor, the Constructor and Destructor methods are automatically created by default...
How to create an SQL query to count?
This help page explains how to create a count query with the query editor....
2. User-friendly editors in practice
How to create an SQL query to get a TOP 10?
This help page presents the method for creating an SQL query used to get the first 10 records......
9. Queries
A query is used to request information from a database to view, insert, change or delete data....
Query editor
The query editor is used to automatically create queries on the data files......
Query with parameters
The queries with parameters allow the user to easily select records according to his own requirements......
Query based on query
Queries can be based on items from another query......
2. User-friendly editors in practice
User-friendly editors in practice...
Welcome to Reports & Queries
Reports & Queries is used to......
Description window of a combining query
The description window of a combining query consists of several sections......
Modifying the query content
The queries are used to easily select the records coming from one or more files, matching one or more selection criteria, ......
SQL commands available in an SQL query
WINDEV allows you to easily run queries in SQL code......
Query
A query is used to interrogate a database in order to view, insert, modify or delete data......
Sub-query
A sub-query is a query whose result is used by another query......
Query technical documentation
The query editor automatically creates a technical documentation for each query......
SQL: Managing joins (INNER JOIN, OUTER JOIN)
To select records coming from several data files, joins must be used in the SQL query......
Query and project
Stored procedures and queries (HFSQL Client/Server)
The stored procedures are used to simplify the development and the maintenance of your applications by factorizing the code......
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