Editing Operations in the Transformation Editor Model

Each of the following Transformation Editor operations has editors that can be used to define the logic associated with the transformation:

Resources	Queries	Loops
Switches	Expressions

When writing expressions, use the inputs of the operation that contains the expression.

To update operations in the Transformation Editor Model tab

Open your transform.

Double-click an operation on the Model tab to select it.

Depending on the type of operation you have selected you should get one of the following editors:

Operation Type	Editor	Description
Expressions	Expression Operation Editor	Provides the name given to the expression and an editable text field that you can use to type your valid expression syntax.
Loops	Loop Iterator Editor	Provides the name given to the loop. You can add levels, define item filters, and use the arrows to arrange the nesting of the levels.
Queries	Query Editor	Provides a complex visual modeling tool with three tabs to help you define the query used within your transform.
Resources	Invoke Resource Operation Editor	Provides the name of the resource, the path to the resource in Studio, and a button that can be used to navigate through a Studio resource tree of valid resources for selection.
Switch	Switch Case Editor	You can use the Switch operation with one or more pairs of expressions. The Switch function evaluates each pair of expressions, and returns the result corresponding to the first boolean expression in the list that evaluates to True.
Cast	Choose Data Type	You can use the CAST function converts a value from one data type to another.
Union		There is no editor for this operation. The operation is created with two inputs and one output that you can use to connect the items that you want to union. Use to combine the result sets of two or more items in your transform. All the source inputs must have the same data type. Union removes duplicate rows between the items that are input.

Use Close, OK, or other mechanisms to close the editors when you are finished editing.

Save your transform.