st_xmin function

Applies to: Databricks Runtime 17.1 and above

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

Syntax

st_xmin ( geoExpr )

Arguments

• geoExpr: A GEOMETRY value.

Returns

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

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

Examples

-- Returns the minimum X coordinate of a non-empty geometry.
> SELECT st_xmin(st_geomfromtext('LINESTRING(10 34,44 57,30 24)'))
  10.0
-- Returns `NULL` for an empty geometry.
> SELECT st_xmin(st_geomfromtext('POLYGON EMPTY'))
  NULL

Related functions

• st_m function
• st_x function
• st_xmax function
• st_y function
• st_z function