-- -- 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 ('((10,20))'); -- Only one point 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 ('[]'); INSERT INTO PATH_TBL VALUES ('[(,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 ('(1,2),(3,4)]'); 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;