How to: Create Queries by Using X++

Applies To: Microsoft Dynamics AX 2012 R3, Microsoft Dynamics AX 2012 R2, Microsoft Dynamics AX 2012 Feature Pack, Microsoft Dynamics AX 2012

In Microsoft Dynamics AX, you can create a query to retrieve data by using the query classes. For more information, see Query Object Model. In addition, by using X++ code, you can create a query and then save that query to the Application Object Tree (AOT).

You can also create a query by using the AOT. For more information, see How to: Create Queries by using the AOT.

Create a Query by Using X++

  1. Add a class to the AOT. For more information about adding a class, see Declaration of Classes.

  2. Add a class method that creates a query by using the Query system classes.

    In the following example, the QueryRun class runs the query specified by the q object. The addDataSource method specifies CustTable as the data source for the query. The addRange and value methods specify account numbers between 4000 and 4022. The addSortField method specifies that data is sorted on the DlvMode field.

        public void runMyDynamicQuery2()
            Query q;
            QueryRun qr;
            QueryBuildDataSource qbd;
            QueryBuildRange qbr;
            q = new Query();
            qbd = q.addDataSource(TableNum(CustTable));
            qbr = qbd.addRange(FieldNum(CustTable, AccountNum));
            qbr.value(">=4000"); // Default operator is ==.
            qbr = qbd.addRange(FieldNum(CustTable, AccountNum));
            qbd.addSortField(FieldNum(CustTable, DlvMode));
            qr = new QueryRun(q);

Access the Query by Using a Menu Item

  1. Add a main method to the class, and call the method that you created in step 2.

  2. Create an action menu item to reference the class by clicking Menu Items, right-clicking Action, and then clicking New Menu Item in the AOT.

  3. Right-click the menu item, click Properties, and set ObjectType to Class. Then select the class that you created in step 1 from the Object property list.

    You can include the menu item in forms and reports by configuring form and report controls to reference the menu item. For more information, see Form Control Properties.

  4. Add your menu item to a menu.
    For example, expand AOT > Menus > SystemAdministration > Common, and then right-click New > Menu item. Fill in the properties of the new menu item node.

Create a Query in the AOT by Using X++

The following procedure is a job that you can run in the AOT to create a query called MyQuery1, provided MyQuery1 does not already exist in the Queries node.

  1. In the AOT, right-click Jobs, and then click New Job. The Code editor window opens.

  2. In the Code editor window, copy the following code, and then paste it in the Code editor.

        static void CreateQuery6Job(Args _args)
            TreeNode                treeNodeObj;
            Query                   queryObj; // Extends TreeNode class.
            QueryBuildDataSource    qbds;
            QueryBuildRange         qbr;
            QueryRun                qr;
            CustTable               xrecCustTable;
            str                     queryName = "MyQuery1";
            // Macro.
            // Delete the query from the AOT, if the query exists.
            treeNodeObj = TreeNode::findNode(#QueriesPath);
            treeNodeObj = treeNodeObj.AOTfindChild(queryName);
            if (treeNodeObj) { treeNodeObj.AOTdelete(); }
            // Add the query to the AOT.
            treeNodeObj = TreeNode::findNode(#QueriesPath);
            queryObj = treeNodeObj.AOTfindChild(queryName);
            // Further define the query.
            qbds  = queryObj.addDataSource(tablenum(CustTable));
            qbr   = qbds.addRange(fieldnum(CustTable, DlvMode));
            // Compile the query.
            // Run the query.
            qr = new QueryRun("MyQuery1");
            while ( )
                xrecCustTable = qr.GetNo(1); // 1 means first data source.
                Global::info(strFmt("%1 , %2",
                    xrecCustTable.AccountNum, xrecCustTable.DlvMode));
            // Delete the query from the AOT.
            treeNodeObj = TreeNode::findNode(#QueriesPath);
            treeNodeObj = treeNodeObj.AOTfindChild(queryName);
  3. Press F7 to compile, and then press F5 to run the job. A query named MyQuery1 is created in the Queries node. The query is run, and then is deleted.

SysQueryRangeUtil Class has Incompatibilities with .NET CIL

In your X++ code, you can use certain methods of the SysQueryRangeUtil class to build query range values that are resolved during run time. One such method is SysQueryRangeUtil::currentWorker(), which is shown in the following code snippet.

 QueryBuildRange myQueryBuildRange; 
 //... (More X++ code here) ... 

However, if your X++ code is compiled to .NET Framework CIL, and is then run as CIL, your code might cause an error.

See also

Accessing Data

Customizing the Query Form

Using Expressions in Query Ranges

How to: Link Two Forms by Using Dynamic Links

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