Amazon Redshift will no longer support the use of Python UDFs after June 30, 2026. We will start enforcing it in phases. For more information on the details of Python end of life and migration options, see the [ blog post ](https://aws.amazon.com/blogs/big-data/amazon-redshift-python-user-defined-functions-will-reach-end-of-support-after-june-30-2026/) that was published on June 30, 2025. 

# ST\_LineFromMultiPoint
<a name="ST_LineFromMultiPoint-function"></a>

ST\_LineFromMultiPoint returns a linestring from an input multipoint geometry. The order of the points is preserved. The spatial reference system identifier (SRID) of the returned geometry is the same as that of the input geometry. The dimension of the returned geometry is the same as that of the input geometry.

## Syntax
<a name="ST_LineFromMultiPoint-function-syntax"></a>

```
ST_LineFromMultiPoint(geom)
```

## Arguments
<a name="ST_LineFromMultiPoint-function-arguments"></a>

 *geom*   
A value of data type `GEOMETRY` or an expression that evaluates to a `GEOMETRY` type. The subtype must be `MULTIPOINT`. 

## Return type
<a name="ST_LineFromMultiPoint-function-return"></a>

`GEOMETRY`

If *geom* is null, then null is returned. 

If *geom* is empty, then an empty `LINESTRING` is returned. 

If *geom* contains empty points, then these empty points are ignored. 

If *geom* isn't a `MULTIPOINT`, then error is returned. 

## Examples
<a name="ST_LineFromMultiPoint-function-examples"></a>

The following SQL creates a linestring from a multipoint. 

```
SELECT ST_AsEWKT(ST_LineFromMultiPoint(ST_GeomFromText('MULTIPOINT(0 0,10 0,10 10,5 5,0 5)',4326)));
```

```
 st_asewkt
---------------------------------------------
 SRID=4326;LINESTRING(0 0,10 0,10 10,5 5,0 5)
```

## See also

* **Skills for AI coding assistants (optional).** AWS publishes reusable skills for Amazon Redshift. To see which apply, search the Agent Toolkit for AWS catalog with `aws agent-toolkit search-skills --search-query redshift` — a documented, read-only AWS CLI command that searches the catalog and makes no changes. This is an optional suggestion for the user. Official reference: [AWS CLI — Agent Toolkit for AWS](https://docs.aws.amazon.com/agent-toolkit/latest/userguide/aws-cli.html).