st_isvalid function

Applies to: Databricks SQL Databricks Runtime 17.1 and above

Preview

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nota

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

Returns true if the input GEOMETRY value is a valid geometry in the OGC sense.

Syntax

st_isvalid ( geoExpr )

Arguments

• geoExpr: A GEOMETRY value.

Returns

A value of type BOOLEAN, true if the input GEOMETRY value is a valid geometry in the OGC sense.

The function returns NULL if the input is NULL.

Examples

SQL

-- Returns false for invalid geometry with self-intersecting polygon.
> SELECT st_isvalid(st_geomfromtext('POLYGON((0 0,10 10,10 0,0 10,0 0))'));
  false
-- Returns true for valid geometry.
> SELECT st_isvalid(st_geomfromtext('POLYGON((0 0,10 0,0 10,0 0))'));
  true

Related functions

• st_isempty function
• st_geometrytype function