British National Grid 座標を使用してポリゴンの重心を作成しようとしています 以下は私のコードです
CREATE TABLE PROJECT.CINEMAS
(CINEMA_ID INTEGER NOT NULL,
CINEMA_NAME VARCHAR(25) NOT NULL,
ADDRESS_NUMBER INTEGER NOT NULL,
POST_CODE VARCHAR(8) NOT NULL,
STREET VARCHAR (25) NOT NULL,
TOWN VARCHAR (25) NOT NULL,
OPENING_TIME TIME NOT NULL,
CLOSING_TIME TIME NOT NULL,
);
/* Add a geometry column containing point coordinates*/
SELECT ADDGEOMETRYCOLUMN('project','cinemas', 'COORDINATES_GEOM', '27700','POLYGON',2);
/* Create a cinema centroid geometry column
SELECT ADDGEOMETRYCOLUMN('project','cinemas', 'CENTROID', '27700','POINT',2);
INSERT INTO PROJECT.CINEMAS
VALUES
(1,'ODEON LEICESTER SQUARE', 24, 'WC2H 7LQ', 'LEICESTER SQUARE', 'LONDON', '11:00:00 AM','11:00:00 PM',GeometryFromText('POLYGON((529901 180738,529944 180745, 529947 180717, 529906 180710, 529905 180719,529902 180718,529900 180727,529903 180729,529901 180738)',27700),ST_Centroid('POLYGON((529901 180738,529944 180745, 529947 180717, 529906 180710, 529905 180719,529902 180718,529900 180727,529903 180729,529901 180738)'));
これが機能しない理由はありますか?