58 lines
1.3 KiB
SQL
58 lines
1.3 KiB
SQL
--
|
|
-- CIRCLE
|
|
--
|
|
|
|
-- Back off displayed precision a little bit to reduce platform-to-platform
|
|
-- variation in results.
|
|
SET extra_float_digits = -1;
|
|
|
|
CREATE TABLE CIRCLE_TBL (f1 circle);
|
|
|
|
INSERT INTO CIRCLE_TBL VALUES ('<(5,1),3>');
|
|
|
|
INSERT INTO CIRCLE_TBL VALUES ('((1,2),100)');
|
|
|
|
INSERT INTO CIRCLE_TBL VALUES (' 1 , 3 , 5 ');
|
|
|
|
INSERT INTO CIRCLE_TBL VALUES (' ( ( 1 , 2 ) , 3 ) ');
|
|
|
|
INSERT INTO CIRCLE_TBL VALUES (' ( 100 , 200 ) , 10 ');
|
|
|
|
INSERT INTO CIRCLE_TBL VALUES (' < ( 100 , 1 ) , 115 > ');
|
|
|
|
INSERT INTO CIRCLE_TBL VALUES ('<(3,5),0>'); -- Zero radius
|
|
|
|
INSERT INTO CIRCLE_TBL VALUES ('<(3,5),NaN>'); -- NaN radius
|
|
|
|
-- bad values
|
|
|
|
INSERT INTO CIRCLE_TBL VALUES ('<(-100,0),-100>');
|
|
|
|
INSERT INTO CIRCLE_TBL VALUES ('<(100,200),10');
|
|
|
|
INSERT INTO CIRCLE_TBL VALUES ('<(100,200),10> x');
|
|
|
|
INSERT INTO CIRCLE_TBL VALUES ('1abc,3,5');
|
|
|
|
INSERT INTO CIRCLE_TBL VALUES ('(3,(1,2),3)');
|
|
|
|
SELECT * FROM CIRCLE_TBL;
|
|
|
|
SELECT center(f1) AS center
|
|
FROM CIRCLE_TBL;
|
|
|
|
SELECT radius(f1) AS radius
|
|
FROM CIRCLE_TBL;
|
|
|
|
SELECT diameter(f1) AS diameter
|
|
FROM CIRCLE_TBL;
|
|
|
|
SELECT f1 FROM CIRCLE_TBL WHERE radius(f1) < 5;
|
|
|
|
SELECT f1 FROM CIRCLE_TBL WHERE diameter(f1) >= 10;
|
|
|
|
SELECT c1.f1 AS one, c2.f1 AS two, (c1.f1 <-> c2.f1) AS distance
|
|
FROM CIRCLE_TBL c1, CIRCLE_TBL c2
|
|
WHERE (c1.f1 < c2.f1) AND ((c1.f1 <-> c2.f1) > 0)
|
|
ORDER BY distance, area(c1.f1), area(c2.f1);
|