> For the complete documentation index, see [llms.txt](https://help.smallbuilder.com/llms.txt). Markdown versions of documentation pages are available by appending `.md` to page URLs; this page is available as [Markdown](https://help.smallbuilder.com/smallbuilder-line-items/builder/builder-setup-steps/setup-lookup-selector/add-virtual-columns-for-datasource.md). # Add Virtual Columns for DataSource Create virtual columns to store temporary values for displaying data retrieved from a DataSource. Virtual columns can be added by clicking the Add Virtual Column button and support value types such as text, number, and currency. {% hint style="warning" %} Virtual columns are designed for use with DataSources. For more details, refer to the DataSource documentation. Example of DataSource Usage > {% endhint %}