Very small example added for st_geometrytype

docs/functions.md

@@ -47,7 +47,7 @@
 | [`ST_GeomFromHEXWKB`](#st_geomfromhexwkb) | Creates a GEOMETRY from a HEXWKB string |
 | [`ST_GeomFromText`](#st_geomfromtext) | Deserializes a GEOMETRY from a WKT string, optionally ignoring invalid geometries |
 | [`ST_GeomFromWKB`](#st_geomfromwkb) | Deserializes a GEOMETRY from a WKB encoded blob |
-| [`ST_GeometryType`](#st_geometrytype) | Returns a 'GEOMETRY_TYPE' enum identifying the input geometry type. |
+| [`ST_GeometryType`](#st_geometrytype) | Returns a 'GEOMETRY_TYPE' enum identifying the input geometry type. Possible enum return types are: `POINT`, `LINESTRING`, `POLYGON`, `MULTIPOINT`, `MULTILINESTRING`, `MULTIPOLYGON`, and `GEOMETRYCOLLECTION`. |
 | [`ST_HasM`](#st_hasm) | Check if the input geometry has M values. |
 | [`ST_HasZ`](#st_hasz) | Check if the input geometry has Z values. |
 | [`ST_Hilbert`](#st_hilbert) | Encodes the X and Y values as the hilbert curve index for a curve covering the given bounding box. |
@@ -610,14 +610,14 @@ Returns if two geometries are within a target distance of each-other
 #### Signature
 
 ```sql
-DOUBLE ST_DWithin_Spheroid (col0 POINT_2D, col1 POINT_2D, col2 DOUBLE)
+BOOLEAN ST_DWithin_Spheroid (col0 POINT_2D, col1 POINT_2D, col2 DOUBLE)
 ```
 
 #### Description
 
 Returns if two POINT_2D's are within a target distance in meters, using an ellipsoidal model of the earths surface
 
-The input geometry is assumed to be in the [EPSG:4326](https://en.wikipedia.org/wiki/World_Geodetic_System) coordinate system (WGS84), with [latitude, longitude] axis order and the distance is returned in meters. This function uses the [GeographicLib](https://geographiclib.sourceforge.io/) library to solve the [inverse geodesic problem](https://en.wikipedia.org/wiki/Geodesics_on_an_ellipsoid#Solution_of_the_direct_and_inverse_problems), calculating the distance between two points using an ellipsoidal model of the earth. This is a highly accurate method for calculating the distance between two arbitrary points taking the curvature of the earths surface into account, but is also the slowest.
+	The input geometry is assumed to be in the [EPSG:4326](https://en.wikipedia.org/wiki/World_Geodetic_System) coordinate system (WGS84), with [latitude, longitude] axis order and the distance is returned in meters. This function uses the [GeographicLib](https://geographiclib.sourceforge.io/) library to solve the [inverse geodesic problem](https://en.wikipedia.org/wiki/Geodesics_on_an_ellipsoid#Solution_of_the_direct_and_inverse_problems), calculating the distance between two points using an ellipsoidal model of the earth. This is a highly accurate method for calculating the distance between two arbitrary points taking the curvature of the earths surface into account, but is also the slowest.
 
 ----
 
@@ -1059,7 +1059,15 @@ ANY ST_GeometryType (col0 WKB_BLOB)
 
 #### Description
 
-Returns a 'GEOMETRY_TYPE' enum identifying the input geometry type.
+Returns a 'GEOMETRY_TYPE' enum identifying the input geometry type. Possible enum return types are: `POINT`, `LINESTRING`, `POLYGON`, `MULTIPOINT`, `MULTILINESTRING`, `MULTIPOLYGON`, and `GEOMETRYCOLLECTION`.
+
+#### Example
+
+```sql
+SELECT DISTINCT ST_GeometryType(ST_GeomFromText('POINT(1 1)'));
+----
+POINT
+```
 
 ----
 
@@ -2342,7 +2350,7 @@ SELECT * FROM ST_Drivers();
 #### Signature
 
 ```sql
-ST_Read (col0 VARCHAR, keep_wkb BOOLEAN, max_batch_size INTEGER, sequential_layer_scan BOOLEAN, layer VARCHAR, sibling_files VARCHAR[], spatial_filter WKB_BLOB, spatial_filter_box BOX_2D, allowed_drivers VARCHAR[], open_options VARCHAR[])
+ST_Read (col0 VARCHAR, keep_wkb BOOLEAN, max_batch_size INTEGER, sequential_layer_scan BOOLEAN, layer VARCHAR, spatial_filter WKB_BLOB, spatial_filter_box BOX_2D, sibling_files VARCHAR[], allowed_drivers VARCHAR[], open_options VARCHAR[])
 ```
 
 #### Description

spatial/src/spatial/core/functions/scalar/st_geometrytype.cpp

@@ -84,10 +84,14 @@ static void WKBTypeFunction(DataChunk &args, ExpressionState &state, Vector &res
 // Documentation
 //------------------------------------------------------------------------------
 static constexpr const char *DOC_DESCRIPTION = R"(
-    Returns a 'GEOMETRY_TYPE' enum identifying the input geometry type.
+	Returns a 'GEOMETRY_TYPE' enum identifying the input geometry type. Possible enum return types are: `POINT`, `LINESTRING`, `POLYGON`, `MULTIPOINT`, `MULTILINESTRING`, `MULTIPOLYGON`, and `GEOMETRYCOLLECTION`.
 )";
 
-static constexpr const char *DOC_EXAMPLE = R"()";
+static constexpr const char *DOC_EXAMPLE = R"(
+SELECT DISTINCT ST_GeometryType(ST_GeomFromText('POINT(1 1)'));
+----
+POINT  
+)";
 
 static constexpr DocTag DOC_TAGS[] = {{"ext", "spatial"}, {"category", "property"}};
 //------------------------------------------------------------------------------