CopyColumn / Manipulation Layer

Create an independent copy of a column with a new name. Similar to pandas' copy() or R's data.frame modification with new column names.

Common applications:

Creating baseline versions before modifications
Preserving original data while testing transformations
Establishing comparison points for before/after analysis
Generating feature variations for modeling
Maintaining audit trails of changes
Setting up parallel processing streams
Creating control columns for validation
Supporting A/B testing scenarios

Example: Copy 'revenue' to 'revenue_baseline' before applying adjustments, or 'customer_score' to 'customer_score_original' before normalization.

Table

Columns

[, ...]

Select

column

Column to duplicate. Common scenarios:

Primary metrics requiring multiple treatments
Key identifiers needing different formats
Base values for multiple calculations
Source data for alternative processing
Reference data for comparison studies

Name for the new column. If not provided, the system generates a unique name. If AsColumn matches an existing column, the existing column is replaced. The name should follow valid column naming conventions.