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--
-- NUMEROLOGY
-- Test various combinations of numeric types and functions.
--
--
-- Test implicit type conversions
-- This fails for Postgres v6.1 (and earlier?)
-- so let's try explicit conversions for now - tgl 97/05/07
--
CREATE TABLE TEMP_FLOAT (f1 FLOAT8);
INSERT INTO TEMP_FLOAT (f1)
SELECT float8(f1) FROM INT4_TBL;
INSERT INTO TEMP_FLOAT (f1)
SELECT float8(f1) FROM INT2_TBL;
SELECT '' AS ten, f1 FROM TEMP_FLOAT
ORDER BY f1;
ten | f1
-----+-------------
| -2147483647
| -123456
| -32767
| -1234
| 0
| 0
| 1234
| 32767
| 123456
| 2147483647
(10 rows)
-- int4
CREATE TABLE TEMP_INT4 (f1 INT4);
INSERT INTO TEMP_INT4 (f1)
SELECT int4(f1) FROM FLOAT8_TBL
WHERE (f1 > -2147483647) AND (f1 < 2147483647);
INSERT INTO TEMP_INT4 (f1)
SELECT int4(f1) FROM INT2_TBL;
SELECT '' AS nine, f1 FROM TEMP_INT4
ORDER BY f1;
nine | f1
------+--------
| -32767
| -1234
| -1004
| -35
| 0
| 0
| 0
| 1234
| 32767
(9 rows)
-- int2
CREATE TABLE TEMP_INT2 (f1 INT2);
INSERT INTO TEMP_INT2 (f1)
SELECT int2(f1) FROM FLOAT8_TBL
WHERE (f1 >= -32767) AND (f1 <= 32767);
INSERT INTO TEMP_INT2 (f1)
SELECT int2(f1) FROM INT4_TBL
WHERE (f1 >= -32767) AND (f1 <= 32767);
SELECT '' AS five, f1 FROM TEMP_INT2
ORDER BY f1;
five | f1
------+-------
| -1004
| -35
| 0
| 0
| 0
(5 rows)
--
-- Group-by combinations
--
CREATE TABLE TEMP_GROUP (f1 INT4, f2 INT4, f3 FLOAT8);
INSERT INTO TEMP_GROUP
SELECT 1, (- i.f1), (- f.f1)
FROM INT4_TBL i, FLOAT8_TBL f;
INSERT INTO TEMP_GROUP
SELECT 2, i.f1, f.f1
FROM INT4_TBL i, FLOAT8_TBL f;
SELECT DISTINCT f1 AS two FROM TEMP_GROUP;
two
-----
1
2
(2 rows)
SELECT f1 AS two, max(f3) AS max_float, min(f3) as min_float
FROM TEMP_GROUP
GROUP BY f1
ORDER BY two, max_float, min_float;
two | max_float | min_float
-----+----------------------+-----------------------
1 | 1.2345678901234e+200 | 0
2 | 0 | -1.2345678901234e+200
(2 rows)
-- Postgres used to accept this, but it is clearly against SQL92 to
-- interpret GROUP BY arguments as result column names; they should
-- be source column names *only*. An error is expected.
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;
ERROR: Attribute 'two' not found
SELECT f1 AS two, (max(f3) + 1) AS max_plus_1, (min(f3) - 1) AS min_minus_1
FROM TEMP_GROUP
GROUP BY f1
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)
SELECT f1 AS two,
max(f2) + min(f2) AS max_plus_min,
min(f3) - 1 AS min_minus_1
FROM TEMP_GROUP
GROUP BY f1
ORDER BY two, min_minus_1;
two | max_plus_min | min_minus_1
-----+--------------+-----------------------
1 | 0 | -1
2 | 0 | -1.2345678901234e+200
(2 rows)
DROP TABLE TEMP_INT2;
DROP TABLE TEMP_INT4;
DROP TABLE TEMP_FLOAT;
DROP TABLE TEMP_GROUP;
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