# Create a Derived Dimension

Perform string manipulations on existing dimensions to create a new, or derived, dimension.

CRM Analytics creates derived dimensions at run time.

:::note
You can also create a derived dimension in a dataflow rather than at runtime.
:::

## Example - Create a Field with City and State

Suppose that you have an Opportunities dataset with a City and a State field. You want to create a single field containing both city and state. Use SAQL to create a derived dimension.

```nolang
q = load "Ops";
q = foreach q generate 'Account' as 'Account', 'Amount' as 'Amount', 'City' + "-" + 'State' as 'City - State';
```

The resulting table contains city and state in the same field.

![Derived dimension shows time to win](https://a.sfdcstatic.com/developer-website/sfdocs/analytics/media/bi_dev_guide_saql/bi_saql_derived_dimension.png)