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ES|QL ST_ISEMPTY function

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Availability

  • Preview since 9.4

    This functionality is in technical preview and is ready for evaluation. Use with caution in production; it is not recommended for mission-critical workloads. Elastic will work to fix any issues, but features in technical preview are not subject to the support SLA of official GA features. Specific Support terms apply.

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Returns true if the supplied geometry is empty.

Embedded
Embedded
geometry

Expression of type geo_point, geo_shape, cartesian_point or cartesian_shape. If null, the function returns null.

Returns true if the supplied geometry is empty. An empty geometry is one that has no points, such as an empty geometry collection or an empty linestring.

geometry result
cartesian_point boolean
cartesian_shape boolean
geo_point boolean
geo_shape boolean
ES|QL 
ROW point = TO_GEOPOINT("POINT(1.0 2.0)"),
    empty_line = TO_GEOSHAPE("LINESTRING EMPTY"),
    empty_polygon = TO_GEOSHAPE("POLYGON EMPTY")
| EVAL pt_empty = ST_ISEMPTY(point),
       line_empty = ST_ISEMPTY(empty_line),
       polygon_empty = ST_ISEMPTY(empty_polygon)
| KEEP pt_empty, line_empty, polygon_empty
pt_empty:boolean line_empty:boolean polygon_empty:boolean
false true true