Use ST_Point

demo/functions.sql

@@ -143,7 +143,7 @@ BEGIN
     SELECT c.name::text, c.abbrev::text, c.postal::text
     FROM ne.admin_0_countries c
     WHERE ST_Intersects(c.geom,
-            ST_SetSRID( ST_MakePoint(lon, lat), 4326))
+            ST_Point(lon, lat, 4326))
     LIMIT 1;
 END;
 $$
@@ -167,7 +167,7 @@ BEGIN
     SELECT n.name::text, n.geom
     FROM (SELECT c.geom FROM ne.admin_0_countries c
           WHERE ST_Intersects(c.geom,
-            ST_SetSRID( ST_MakePoint(lon, lat), 4326))
+            ST_Point(lon, lat, 4326))
           LIMIT 1) AS t
     JOIN LATERAL (SELECT * FROM ne.admin_0_countries n
       WHERE ST_Touches(t.geom, n.geom)) AS n ON true;
@@ -188,7 +188,7 @@ RETURNS TABLE(name text, dist double precision, geom geometry)
 AS $$
 BEGIN
 	RETURN QUERY
-    SELECT gn.name, gn.geom <-> ST_SetSRID( ST_MakePoint(pt_lon, pt_lat), 4326) AS dist, gn.geom
+    SELECT gn.name, gn.geom <-> ST_Point(pt_lon, pt_lat, 4326) AS dist, gn.geom
     FROM geonames gn
     ORDER BY dist LIMIT k;
 END;

demo/hexagon.sql

@@ -10,13 +10,13 @@ cx float8 := 1.5*i*edge;
 cy float8 := h*(2*j+abs(i%2));
 BEGIN
 RETURN ST_MakePolygon(ST_MakeLine(ARRAY[
-            ST_MakePoint(cx - 1.0*edge, cy + 0),
-            ST_MakePoint(cx - 0.5*edge, cy + -1*h),
-            ST_MakePoint(cx + 0.5*edge, cy + -1*h),
-            ST_MakePoint(cx + 1.0*edge, cy + 0),
-            ST_MakePoint(cx + 0.5*edge, cy + h),
-            ST_MakePoint(cx - 0.5*edge, cy + h),
-            ST_MakePoint(cx - 1.0*edge, cy + 0)
+            ST_Point(cx - 1.0*edge, cy + 0),
+            ST_Point(cx - 0.5*edge, cy + -1*h),
+            ST_Point(cx + 0.5*edge, cy + -1*h),
+            ST_Point(cx + 1.0*edge, cy + 0),
+            ST_Point(cx + 0.5*edge, cy + h),
+            ST_Point(cx - 0.5*edge, cy + h),
+            ST_Point(cx - 1.0*edge, cy + 0)
         ]));
 END;
 $$

hugo/content/examples/ex_query_functions_locate_country.md

@@ -25,7 +25,7 @@ BEGIN
    SELECT c.name::text, c.abbrev::text, c.postal::text
    FROM ne.countries c
    WHERE ST_Intersects(c.geom,
-            ST_SetSRID(ST_MakePoint(lon, lat), 4326))
+            ST_Point(lon, lat, 4326))
    LIMIT 1;
 END;
 $$
@@ -37,7 +37,7 @@ IS 'Finds the country at a geographic location';
 
 Notes:
 
-* The function generates a [Point](https://postgis.net/docs/ST_MakePoint.html) based on the longitude and latitude values provided in the parameters.
+* The function generates a [Point](https://postgis.net/docs/ST_Point.html) based on the longitude and latitude values provided in the parameters.
 * The `ne.countries` table is filtered based on whether the point [intersects](https://postgis.net/docs/ST_Intersects.html) a country polygon.
 * It's possible that a point lies exactly on the boundary between two countries. Both country records will be included in the query result set, but `LIMIT 1` restricts the result to a single record.