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://amazonaws-china.com/blogs/big-data/amazon-redshift-python-user-defined-functions-will-reach-end-of-support-after-june-30-2026/). 

# ST\$1YMin
<a name="ST_YMin-function"></a>

ST\$1YMin returns the minimum second coordinate of an input geometry. 

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

```
ST_YMin(geom)
```

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

 *geom*   
A value of data type `GEOMETRY` or an expression that evaluates to a `GEOMETRY` type. 

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

`DOUBLE PRECISION` value of the minimum second coordinate. 

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

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

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

The following SQL returns the smallest second coordinate of a linestring. 

```
SELECT ST_YMin(ST_GeomFromText('LINESTRING(77.29 29.07,77.42 29.26,77.27 29.31,77.29 29.07)'));
```

```
st_ymin
-----------
 29.07
```