100 lines
2.6 KiB
Plaintext
100 lines
2.6 KiB
Plaintext
--
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-- CIRCLE
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--
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CREATE TABLE CIRCLE_TBL (f1 circle);
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INSERT INTO CIRCLE_TBL VALUES ('<(5,1),3>');
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INSERT INTO CIRCLE_TBL VALUES ('<(1,2),100>');
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INSERT INTO CIRCLE_TBL VALUES ('1,3,5');
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INSERT INTO CIRCLE_TBL VALUES ('((1,2),3)');
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INSERT INTO CIRCLE_TBL VALUES ('<(100,200),10>');
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INSERT INTO CIRCLE_TBL VALUES ('<(100,1),115>');
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-- bad values
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INSERT INTO CIRCLE_TBL VALUES ('<(-100,0),-100>');
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ERROR: invalid input syntax for type circle: "<(-100,0),-100>"
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LINE 1: INSERT INTO CIRCLE_TBL VALUES ('<(-100,0),-100>');
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^
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INSERT INTO CIRCLE_TBL VALUES ('1abc,3,5');
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ERROR: invalid input syntax for type circle: "1abc,3,5"
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LINE 1: INSERT INTO CIRCLE_TBL VALUES ('1abc,3,5');
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^
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INSERT INTO CIRCLE_TBL VALUES ('(3,(1,2),3)');
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ERROR: invalid input syntax for type circle: "(3,(1,2),3)"
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LINE 1: INSERT INTO CIRCLE_TBL VALUES ('(3,(1,2),3)');
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^
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SELECT * FROM CIRCLE_TBL;
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f1
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----------------
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<(5,1),3>
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<(1,2),100>
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<(1,3),5>
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<(1,2),3>
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<(100,200),10>
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<(100,1),115>
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(6 rows)
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SELECT '' AS six, center(f1) AS center
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FROM CIRCLE_TBL;
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six | center
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-----+-----------
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| (5,1)
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| (1,2)
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| (1,3)
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| (1,2)
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| (100,200)
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| (100,1)
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(6 rows)
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SELECT '' AS six, radius(f1) AS radius
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FROM CIRCLE_TBL;
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six | radius
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-----+--------
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| 3
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| 100
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| 5
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| 3
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| 10
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| 115
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(6 rows)
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SELECT '' AS six, diameter(f1) AS diameter
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FROM CIRCLE_TBL;
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six | diameter
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-----+----------
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| 6
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| 200
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| 10
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| 6
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| 20
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| 230
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(6 rows)
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SELECT '' AS two, f1 FROM CIRCLE_TBL WHERE radius(f1) < 5;
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two | f1
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-----+-----------
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| <(5,1),3>
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| <(1,2),3>
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(2 rows)
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SELECT '' AS four, f1 FROM CIRCLE_TBL WHERE diameter(f1) >= 10;
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four | f1
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------+----------------
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| <(1,2),100>
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| <(1,3),5>
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| <(100,200),10>
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| <(100,1),115>
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(4 rows)
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SELECT '' as five, c1.f1 AS one, c2.f1 AS two, (c1.f1 <-> c2.f1) AS distance
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FROM CIRCLE_TBL c1, CIRCLE_TBL c2
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WHERE (c1.f1 < c2.f1) AND ((c1.f1 <-> c2.f1) > 0)
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ORDER BY distance, area(c1.f1), area(c2.f1);
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five | one | two | distance
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------+----------------+----------------+------------------
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| <(100,200),10> | <(100,1),115> | 74
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| <(100,200),10> | <(1,2),100> | 111.370729772479
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| <(1,3),5> | <(100,200),10> | 205.476756144497
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| <(5,1),3> | <(100,200),10> | 207.51303816328
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| <(1,2),3> | <(100,200),10> | 208.370729772479
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(5 rows)
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