メインコンテンツまでスキップ

st_ymin function

Applies to: check marked yes Databricks SQL check marked yes Databricks Runtime 17.1 and above

Preview

This feature is in Public Preview.

注記

This feature is not available on Databricks SQL Classic warehouses. To learn more about Databricks SQL warehouses, see SQL warehouse types.

Returns the minimum Y coordinate of the input GEOMETRY value, or NULL if the geometry is empty.

Syntax

st_ymin ( geoExpr )

Arguments

  • geoExpr: A GEOMETRY value.

Returns

A value of type DOUBLE, equal to the minimum Y coordinate of the input GEOMETRY value.

The function returns NULL if the input is NULL or if the geometry is empty.

Examples

SQL
-- Returns the minimum Y coordinate of a non-empty geometry.
> SELECT st_ymin(st_geomfromtext('LINESTRING(10 34,44 57,30 24)'));
24.0
-- Returns `NULL` for an empty geometry.
> SELECT st_ymin(st_geomfromtext('POLYGON EMPTY'));
NULL