analytics/informix/extend/spatial.8.22.FC2/examples/sql/st_polygon.sql

-- The following CREATE TABLE statement creates the polygon_test
-- tables, which has a single column, p1.

CREATE TABLE polygon_test (p1 ST_polygon);

-- The INSERT statement converts a ring (a ST_LineString that is both
-- closed and simple) into a ST_Polygon and inserts it into the p1 column
-- using the ST_LineFromText function within the ST_Polygon function.

INSERT INTO polygon_test VALUES(
   ST_Polygon(ST_LineFromText('linestring (10.01 20.03, 20.94 21.34, 35.93 10.04, 10.01 20.03)',1000))
);