数据库系统

开发平台：
Unix_Linux

polygon.out：源码内容
							QUERY: CREATE TABLE POLYGON_TBL(f1 polygon);
QUERY: INSERT INTO POLYGON_TBL(f1) VALUES ('(2.0,0.0),(2.0,4.0),(0.0,0.0)');
QUERY: INSERT INTO POLYGON_TBL(f1) VALUES ('(3.0,1.0),(3.0,3.0),(1.0,0.0)');
QUERY: INSERT INTO POLYGON_TBL(f1) VALUES ('(0.0,0.0)');
QUERY: INSERT INTO POLYGON_TBL(f1) VALUES ('(0.0,1.0),(0.0,1.0)');
QUERY: INSERT INTO POLYGON_TBL(f1) VALUES ('0.0');
ERROR:  Bad polygon external representation '0.0'
QUERY: INSERT INTO POLYGON_TBL(f1) VALUES ('(0.0 0.0');
ERROR:  Bad polygon external representation '(0.0 0.0'
QUERY: INSERT INTO POLYGON_TBL(f1) VALUES ('(0,1,2)');
ERROR:  Bad polygon external representation '(0,1,2)'
QUERY: INSERT INTO POLYGON_TBL(f1) VALUES ('(0,1,2,3');
ERROR:  Bad polygon external representation '(0,1,2,3'
QUERY: INSERT INTO POLYGON_TBL(f1) VALUES ('asdf');
ERROR:  Bad polygon external representation 'asdf'
QUERY: SELECT '' AS four, POLYGON_TBL.*;
four|f1                 
----+-------------------
    |((2,0),(2,4),(0,0))
    |((3,1),(3,3),(1,0))
    |((0,0))            
    |((0,1),(0,1))      
(4 rows)
QUERY: SELECT '' AS three, p.*
   FROM POLYGON_TBL p
   WHERE p.f1 && '(3.0,1.0),(3.0,3.0),(1.0,0.0)';
three|f1                 
-----+-------------------
     |((2,0),(2,4),(0,0))
     |((3,1),(3,3),(1,0))
(2 rows)
QUERY: SELECT '' AS four, p.*
   FROM POLYGON_TBL p
   WHERE p.f1 &< '(3.0,1.0),(3.0,3.0),(1.0,0.0)';
four|f1                 
----+-------------------
    |((2,0),(2,4),(0,0))
    |((3,1),(3,3),(1,0))
    |((0,0))            
    |((0,1),(0,1))      
(4 rows)
QUERY: SELECT '' AS two, p.*
   FROM POLYGON_TBL p
   WHERE p.f1 &> '(3.0,1.0),(3.0,3.0),(1.0,0.0)';
two|f1                 
---+-------------------
   |((2,0),(2,4),(0,0))
   |((3,1),(3,3),(1,0))
(2 rows)
QUERY: SELECT '' AS one, p.*
   FROM POLYGON_TBL p
   WHERE p.f1 << '(3.0,1.0),(3.0,3.0),(1.0,0.0)';
one|f1           
---+-------------
   |((0,0))      
   |((0,1),(0,1))
(2 rows)
QUERY: SELECT '' AS zero, p.*
   FROM POLYGON_TBL p
   WHERE p.f1 >> '(3.0,1.0),(3.0,3.0),(1.0,0.0)';
zero|f1
----+--
(0 rows)
QUERY: SELECT '' AS one, p.*
   FROM POLYGON_TBL p
   WHERE p.f1 @ '(3.0,1.0),(3.0,3.0),(1.0,0.0)'::polygon;
one|f1                 
---+-------------------
   |((3,1),(3,3),(1,0))
(1 row)
QUERY: SELECT '' AS one, p.*
   FROM POLYGON_TBL p
   WHERE p.f1 ~= '(3.0,1.0),(3.0,3.0),(1.0,0.0)'::polygon;
one|f1                 
---+-------------------
   |((3,1),(3,3),(1,0))
(1 row)
QUERY: SELECT '' AS one, p.*
   FROM POLYGON_TBL p
   WHERE p.f1 ~ '(3.0,1.0),(3.0,3.0),(1.0,0.0)'::polygon;
one|f1                 
---+-------------------
   |((3,1),(3,3),(1,0))
(1 row)
QUERY: SELECT '(2.0,0.0),(2.0,4.0),(0.0,0.0)'::polygon << '(3.0,1.0),(3.0,3.0),(1.0,0.0)'::polygon AS false;
false
-----
f    
(1 row)
QUERY: SELECT '(2.0,0.0),(2.0,4.0),(0.0,0.0)'::polygon << '(3.0,1.0),(3.0,3.0),(1.0,0.0)'::polygon AS true;
true
----
f   
(1 row)
QUERY: SELECT '(2.0,0.0),(2.0,4.0),(0.0,0.0)'::polygon &> '(3.0,1.0),(3.0,3.0),(1.0,0.0)'::polygon AS true;
true
----
t   
(1 row)
QUERY: SELECT '(2.0,0.0),(2.0,4.0),(0.0,0.0)'::polygon >> '(3.0,1.0),(3.0,3.0),(1.0,0.0)'::polygon AS false;
false
-----
f    
(1 row)
QUERY: SELECT '(2.0,0.0),(2.0,4.0),(0.0,0.0)'::polygon @ '(3.0,1.0),(3.0,3.0),(1.0,0.0)'::polygon AS false;
false
-----
f    
(1 row)
QUERY: SELECT '(2.0,0.0),(2.0,4.0),(0.0,0.0)'::polygon ~ '(3.0,1.0),(3.0,3.0),(1.0,0.0)'::polygon AS false;
false
-----
f    
(1 row)
QUERY: SELECT '(2.0,0.0),(2.0,4.0),(0.0,0.0)'::polygon ~= '(3.0,1.0),(3.0,3.0),(1.0,0.0)'::polygon AS false;
false
-----
f    
(1 row)
QUERY: SELECT '(2.0,0.0),(2.0,4.0),(0.0,0.0)'::polygon && '(3.0,1.0),(3.0,3.0),(1.0,0.0)'::polygon AS true;
true
----
t   
(1 row)

						