numerology.out

关系型数据库 Postgresql 6.5.2

QUERY: CREATE TABLE TEMP_FLOAT (f1 FLOAT8);
QUERY: INSERT INTO TEMP_FLOAT (f1)
  SELECT float8(f1) FROM INT4_TBL;
QUERY: INSERT INTO TEMP_FLOAT (f1)
  SELECT float8(f1) FROM INT2_TBL;
QUERY: SELECT '' AS ten, f1 FROM TEMP_FLOAT
  ORDER BY f1;
ten|         f1
---+-----------
   |-2147483647
   |    -123456
   |     -32767
   |      -1234
   |          0
   |          0
   |       1234
   |      32767
   |     123456
   | 2147483647
(10 rows)

QUERY: CREATE TABLE TEMP_INT4 (f1 INT4);
QUERY: INSERT INTO TEMP_INT4 (f1)
  SELECT int4(f1) FROM FLOAT8_TBL
  WHERE (f1 > -2147483647) AND (f1 < 2147483647);
QUERY: INSERT INTO TEMP_INT4 (f1)
  SELECT int4(f1) FROM INT2_TBL;
QUERY: SELECT '' AS nine, f1 FROM TEMP_INT4
  ORDER BY f1;
nine|    f1
----+------
    |-32767
    | -1234
    | -1004
    |   -35
    |     0
    |     0
    |     0
    |  1234
    | 32767
(9 rows)

QUERY: CREATE TABLE TEMP_INT2 (f1 INT2);
QUERY: INSERT INTO TEMP_INT2 (f1)
  SELECT int2(f1) FROM FLOAT8_TBL
  WHERE (f1 >= -32767) AND (f1 <= 32767);
QUERY: INSERT INTO TEMP_INT2 (f1)
  SELECT int2(f1) FROM INT4_TBL
  WHERE (f1 >= -32767) AND (f1 <= 32767);
QUERY: SELECT '' AS five, f1 FROM TEMP_INT2
  ORDER BY f1;
five|   f1
----+-----
    |-1004
    |  -35
    |    0
    |    0
    |    0
(5 rows)

QUERY: CREATE TABLE TEMP_GROUP (f1 INT4, f2 INT4, f3 FLOAT8);
QUERY: INSERT INTO TEMP_GROUP
  SELECT 1, (- i.f1), (- f.f1)
  FROM INT4_TBL i, FLOAT8_TBL f;
QUERY: INSERT INTO TEMP_GROUP
  SELECT 2, i.f1, f.f1
  FROM INT4_TBL i, FLOAT8_TBL f;
QUERY: SELECT DISTINCT f1 AS two FROM TEMP_GROUP;
two
---
  1
  2
(2 rows)

QUERY: SELECT f1 AS two, max(f3) AS max_float, min(f3) as min_float
  FROM TEMP_GROUP
  GROUP BY two
  ORDER BY two, max_float, min_float;
two|max_float           |min_float            
---+--------------------+---------------------
  1|1.2345678901234e+200|0                    
  2|0                   |-1.2345678901234e+200
(2 rows)

QUERY: SELECT f1 AS two, max(f3) AS max_float, min(f3) AS min_float
  FROM TEMP_GROUP
  GROUP BY two
  ORDER BY two, max_float, min_float;
two|max_float           |min_float            
---+--------------------+---------------------
  1|1.2345678901234e+200|0                    
  2|0                   |-1.2345678901234e+200
(2 rows)

QUERY: SELECT f1 AS two, (max(f3) + 1) AS max_plus_1, (min(f3) - 1) AS min_minus_1
  FROM TEMP_GROUP
  GROUP BY two
  ORDER BY two, min_minus_1;
two|max_plus_1          |min_minus_1          
---+--------------------+---------------------
  1|1.2345678901234e+200|-1                   
  2|1                   |-1.2345678901234e+200
(2 rows)

QUERY: SELECT f1 AS two, (max(f3) + 1) AS max_plus_1, (min(f3) - 1) AS min_minus_1
  FROM TEMP_GROUP
  GROUP BY two
  ORDER BY two, min_minus_1;
two|max_plus_1          |min_minus_1          
---+--------------------+---------------------
  1|1.2345678901234e+200|-1                   
  2|1                   |-1.2345678901234e+200
(2 rows)

QUERY: DROP TABLE TEMP_INT2;
QUERY: DROP TABLE TEMP_INT4;
QUERY: DROP TABLE TEMP_FLOAT;
QUERY: DROP TABLE TEMP_GROUP;