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Derived Column Transformation Editor

Use the Derived Column Transformation Editor dialog box to create expressions that populate new or replacement columns.

To learn more about the Derived Column transformation, see Derived Column Transformation.

Options

  • Variables and Columns
    Build an expression that uses a variable or an input column by dragging the variable or column from the list of available variables and columns to an existing table row in the pane below, or to a new row at the bottom of the list.

  • Functions and Operators
    Build an expression that uses a function or an operator to evaluate input data and direct output data by dragging functions and operators from the list to the pane below.

  • Derived Column Name
    Provide a derived column name. The default is a numbered list of derived columns; however, you can choose any unique, descriptive name.

  • Derived Column
    Select a derived column from the list. Choose whether to add the derived column as a new output column, or to replace the data in an existing column.

  • Expression
    Type an expression or build one by dragging from the previous list of available columns, variables, functions, and operators.

The value of this property can be specified by using a property expression.

**Related topics**: [Integration Services Expression Reference](ms141232\(v=sql.105\).md), [Operators (SSIS Expression)](ms137538\(v=sql.105\).md), and [String Functions and Other Functions (SSIS Expression)](ms141671\(v=sql.105\).md)

  • Data Type
    If adding data to a new column, the Derived Column TransformationEditor dialog box automatically evaluates the expression and sets the data type appropriately. The value of this column is read-only. For more information, see Integration Services Data Types.

  • Length
    If adding data to a new column, the Derived Column TransformationEditor dialog box automatically evaluates the expression and sets the column length for string data. The value of this column is read-only.

  • Precision
    If adding data to a new column, the Derived Column TransformationEditor dialog box automatically sets the precision for numeric data based on the data type. The value of this column is read-only.

  • Scale
    If adding data to a new column, the Derived Column TransformationEditor dialog box automatically sets the scale for numeric data based on the data type. The value of this column is read-only.

  • Code Page
    If adding data to a new column, the Derived Column TransformationEditor dialog box automatically sets code page for the DT_STR data type. You can update Code Page.

  • Configure error output
    Specify how to handle errors by using the Configure Error Output dialog box.