# Example

The following example of a SQL query shows how to include a parameter. The example queries the **employeeList** data service for records, and when the data service transformation is executed, any use of the parameter **employeeRegion** in it will be substituted with the value *USA EAST*. This parameter can be in any transformation step that allows variable or parameter substitution.

You can also assign a value to the parameter in the Connection Properties window.

Using the following sample syntax:

```sql
SELECT * FROM '<*data service name*>' WHERE PARAMETER('<*parameter\_name*>') = '<*parameter\_value*>'
```

The following query would be used for our example:

```sql
view sourceprint
   SELECT * FROM '*employeeList*' WHERE PARAMETER('*employeeRegion*')='*USA EAST*'
```


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