Amazon Redshift will no longer support the creation of new Python UDFs starting Patch 198. Existing Python UDFs will continue to function until June 30, 2026. For more information, 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/). 

# ST\$1ContainsProperly
<a name="ST_ContainsProperly-function"></a>

ST\$1ContainsProperly returns true if both input geometries are nonempty, and all points of the 2D projection of the second geometry are interior points of the 2D projection of the first geometry. 

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

```
ST_ContainsProperly(geom1, geom2)
```

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

 *geom1*   
A value of data type `GEOMETRY` or an expression that evaluates to a `GEOMETRY` type. The subtype can't be `GEOMETRYCOLLECTION`. 

 *geom2*   
A value of data type `GEOMETRY` or an expression that evaluates to a `GEOMETRY` type. The subtype can't be `GEOMETRYCOLLECTION`. This value is compared with *geom1* to determine if all its points are interior points of *geom1*. 

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

`BOOLEAN`

If *geom1* or *geom2* is null, then null is returned. 

If *geom1* and *geom2* don't have the same value for the spatial reference system identifier (SRID), then an error is returned. 

If *geom1* or *geom2* is a geometry collection, then an error is returned. 

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

The following SQL returns the values of ST\$1Contains and ST\$1ContainsProperly where the input linestring intersects the interior and the boundary of the input polygon (but not its exterior). The polygon contains the linestring but doesn't properly contain the linestring. 

```
WITH tmp(g1, g2) 
AS (SELECT ST_GeomFromText('POLYGON((0 0,10 0,10 10,0 10,0 0))'), ST_GeomFromText('LINESTRING(5 5,10 5,10 6,5 5)')) SELECT ST_Contains(g1, g2), ST_ContainsProperly(g1, g2) 
FROM tmp;
```

```
 st_contains | st_containsproperly 
-------------+---------------------
 t           | f
```