# Copying schema columns from Talend Studio components

Copy schema columns from a Talend Studio component and paste them as elements in a hierarchical mapper structure.

## About this task

You can reuse schema columns from Talend Studio components by copying them and pasting them into hierarchical mapper structures. The schema columns are automatically converted to structure elements with the appropriate data types.

## Procedure

1. In Talend Studio, right-click one or more schema columns from a component and select Copy.
2. In the Hierarchical Mapper, open the structure where you want to add the elements.
3. To paste the schema columns as child elements, right-click the parent element and select Paste from Studio schema.

   The schema columns are added as child elements under the selected parent.
4. To paste the schema columns as sibling elements, right-click an element and select Paste as Sibling from Studio schema.

   The schema columns are added at the same level as the selected element.

## Results

The copied schema columns are converted to structure elements with data types mapped as follows:

| Component schema type | Hierarchical mapper structure type |
| --- | --- |
| Boolean | Boolean |
| Byte | Byte (8) |
| Character | Character |
| String | String |
| Date | DateTime |
| Double | Double |
| Float | Float |
| Integer | Integer (32) |
| Long | Integer (64) |
| Short | Integer (16) |
| BigDecimal | Decimal |

Information noteNote: Schema columns with unsupported data types are skipped during the paste operation.