How do you interact with the Microsoft Dynamics AX database using X++?

How do you interact with the Microsoft Dynamics AX database using X++?

In X++, you can interact with the Microsoft Dynamics AX database using the built-in classes provided by the application. These classes provide a set of methods that allow you to perform operations such as inserting, updating, and deleting records, as well as querying the database.

The most common way to interact with the database is by using the select statement, which allows you to retrieve data from one or more tables and return the results in the form of a record set. Here's an example of how you might use the select statement to retrieve all the records from the "CustTable" table:

CustTable custTable;
select custTable;

You can also use the insert, update, and delete statements to perform the corresponding operations on the database records. Here's an example of how you might use the insert statement to insert a new record into the "CustTable" table:

CustTable custTable;
custTable.AccountNum = "ABC123";
custTable.Name = "John Smith";
custTable.insert();

You can also use the update statement to update an existing record in the "CustTable" table:

CustTable custTable;
select custTable where custTable.AccountNum == "ABC123";
custTable.Name = "Jane Smith";
custTable.update();

You can also use the delete statement to delete an existing record in the "CustTable" table:

CustTable custTable;
select custTable where custTable.AccountNum == "ABC123";
custTable.delete();

Additionally, you can use other classes like Query, QueryRun, and TableScan to create more complex queries, and classes like DataDictionary to retrieve metadata about the table schema and fields. It's worth noting that, when working with the database, it's important to consider the performance and security of your code, and to properly test and handle any errors that may occur.