how to use not in list in filter expression in sap datasphere, give me the syntax
In SAP Datasphere, you can use the `FILTER` expression to exclude values from a list by utilizing the `NOT IN` syntax. The typical structure for using `NOT IN` within a `FILTER` expression is similar to SQL. Here is an example of how to use it:
### Syntax Example
```sql
FILTER(<your_table>)
WHERE <your_column> NOT IN ('value1', 'value2', 'value3')
```
### Breakdown
- **`FILTER(<your_table>)`**: This specifies the table or dataset you are filtering.
- **`<your_column>`**: This is the column in the dataset that you are evaluating.
- **`NOT IN ('value1', 'value2', 'value3')`**: This clause excludes rows where `<your_column>` matches any of the specified values.
### Example
Suppose you have a table named `Sales` and you want to filter out the sales for regions 'North' and 'South'. Your expression would look like this:
```sql
FILTER(Sales)
WHERE Region NOT IN ('North', 'South')
```
This query will return all rows from the `Sales` table where the `Region` is neither 'North' nor 'South'.
### Usage
Make sure that you adapt the syntax according to the specific column names and values from your dataset in SAP Datasphere that you wish to filter.