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Version: 2026

Selection conditions of a query
The selection conditions of records are applied to the items used in the queries...
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...
HSuggestKeyStart (Function)
Starts collecting information on executed 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...
Select query description window
The description window of a select query includes several sections...
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...
SQLExecWDR (Function)
Runs the SQL code of a query created in the query editor.
HListQueryParameter (Function)
Returns the list of parameters for a query created in the query editor.
<Source>.ListQueryParameter (Function)
Returns the list of parameters for a query created in the query editor.
HExecuteQuery (Function)
Declares a query created in the query editor to the HFSQL engine and runs this query.
<Source>.ExecuteQuery (Function)
Declares a query created in the query editor to the HFSQL engine and runs this query.
SQLCode (Property)
The SQLCode code property is used to get the SQL code of a query created with the query editor (".WDR" file).
FileToMemoryTable (Function)
Populates a Table control programmatically with the records from a table, HFSQL view or query (query created in the query editor or with HExecuteSQLQuery).
The user version of query editor : Specific features
This help page presents the specific features of the user version of query editor......
The user version of query editor (Reports & Queries)
A query is used to interrogate a database in order to view, insert, modify or delete data......
Opening, closing and saving a query
The query editor allows you to easily handle the queries....
Query editor: Characteristics
How to create and run an SQL query through programming?
This help page explains how to create and run an SQL query through programming....
Creating a query in SQL code
The query editor allows you to create a query by typing SQL code......
HFSQL properties
List of HFSQL properties...
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