-- -- PATH -- --DROP TABLE PATH_TBL; CREATE TABLE PATH_TBL (f1 path); INSERT INTO PATH_TBL VALUES ('[(1,2),(3,4)]'); INSERT INTO PATH_TBL VALUES ('((1,2),(3,4))'); INSERT INTO PATH_TBL VALUES ('[(0,0),(3,0),(4,5),(1,6)]'); INSERT INTO PATH_TBL VALUES ('((1,2),(3,4))'); INSERT INTO PATH_TBL VALUES ('1,2 ,3,4'); INSERT INTO PATH_TBL VALUES ('[1,2,3, 4]'); INSERT INTO PATH_TBL VALUES ('[11,12,13,14]'); INSERT INTO PATH_TBL VALUES ('(11,12,13,14)'); -- bad values for parser testing INSERT INTO PATH_TBL VALUES ('[(,2),(3,4)]'); INSERT INTO PATH_TBL VALUES ('[(1,2),(3,4)'); SELECT f1 FROM PATH_TBL; SELECT '' AS count, f1 AS open_path FROM PATH_TBL WHERE isopen(f1); SELECT '' AS count, f1 AS closed_path FROM PATH_TBL WHERE isclosed(f1); SELECT '' AS count, pclose(f1) AS closed_path FROM PATH_TBL; SELECT '' AS count, popen(f1) AS open_path FROM PATH_TBL;