st_ymin function

Applies to: Databricks Runtime 17.1 and above

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

Syntax

st_ymin ( geoExpr )

Arguments

• geoExpr: A GEOMETRY value.

Returns

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

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

Examples

-- 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

Related functions

• st_m function
• st_x function
• st_y function
• st_ymax function
• st_z function