137 lines
3.4 KiB
Plaintext
137 lines
3.4 KiB
Plaintext
--
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-- NUMEROLOGY
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-- Test various combinations of numeric types and functions.
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--
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--
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-- Test implicit type conversions
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-- This fails for Postgres v6.1 (and earlier?)
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-- so let's try explicit conversions for now - tgl 97/05/07
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--
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CREATE TABLE TEMP_FLOAT (f1 FLOAT8);
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INSERT INTO TEMP_FLOAT (f1)
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SELECT float8(f1) FROM INT4_TBL;
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INSERT INTO TEMP_FLOAT (f1)
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SELECT float8(f1) FROM INT2_TBL;
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SELECT '' AS ten, f1 FROM TEMP_FLOAT
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ORDER BY f1;
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ten | f1
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-----+-------------
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| -2147483647
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| -123456
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| -32767
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| -1234
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| 0
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| 0
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| 1234
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| 32767
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| 123456
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| 2147483647
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(10 rows)
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-- int4
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CREATE TABLE TEMP_INT4 (f1 INT4);
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INSERT INTO TEMP_INT4 (f1)
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SELECT int4(f1) FROM FLOAT8_TBL
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WHERE (f1 > -2147483647) AND (f1 < 2147483647);
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INSERT INTO TEMP_INT4 (f1)
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SELECT int4(f1) FROM INT2_TBL;
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SELECT '' AS nine, f1 FROM TEMP_INT4
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ORDER BY f1;
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nine | f1
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------+--------
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| -32767
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| -1234
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| -1004
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| -35
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| 0
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| 0
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| 0
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| 1234
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| 32767
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(9 rows)
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-- int2
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CREATE TABLE TEMP_INT2 (f1 INT2);
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INSERT INTO TEMP_INT2 (f1)
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SELECT int2(f1) FROM FLOAT8_TBL
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WHERE (f1 >= -32767) AND (f1 <= 32767);
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INSERT INTO TEMP_INT2 (f1)
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SELECT int2(f1) FROM INT4_TBL
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WHERE (f1 >= -32767) AND (f1 <= 32767);
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SELECT '' AS five, f1 FROM TEMP_INT2
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ORDER BY f1;
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five | f1
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------+-------
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| -1004
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| -35
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| 0
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| 0
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| 0
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(5 rows)
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--
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-- Group-by combinations
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--
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CREATE TABLE TEMP_GROUP (f1 INT4, f2 INT4, f3 FLOAT8);
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INSERT INTO TEMP_GROUP
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SELECT 1, (- i.f1), (- f.f1)
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FROM INT4_TBL i, FLOAT8_TBL f;
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INSERT INTO TEMP_GROUP
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SELECT 2, i.f1, f.f1
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FROM INT4_TBL i, FLOAT8_TBL f;
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SELECT DISTINCT f1 AS two FROM TEMP_GROUP ORDER BY 1;
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two
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-----
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1
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2
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(2 rows)
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SELECT f1 AS two, max(f3) AS max_float, min(f3) as min_float
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FROM TEMP_GROUP
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GROUP BY f1
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ORDER BY two, max_float, min_float;
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two | max_float | min_float
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-----+----------------------+-----------------------
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1 | 1.2345678901234e+200 | 0
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2 | 0 | -1.2345678901234e+200
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(2 rows)
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-- GROUP BY a result column name is not legal per SQL92, but we accept it
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-- anyway (if the name is not the name of any column exposed by FROM).
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SELECT f1 AS two, max(f3) AS max_float, min(f3) AS min_float
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FROM TEMP_GROUP
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GROUP BY two
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ORDER BY two, max_float, min_float;
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two | max_float | min_float
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-----+----------------------+-----------------------
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1 | 1.2345678901234e+200 | 0
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2 | 0 | -1.2345678901234e+200
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(2 rows)
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SELECT f1 AS two, (max(f3) + 1) AS max_plus_1, (min(f3) - 1) AS min_minus_1
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FROM TEMP_GROUP
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GROUP BY f1
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ORDER BY two, min_minus_1;
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two | max_plus_1 | min_minus_1
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-----+----------------------+-----------------------
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1 | 1.2345678901234e+200 | -1
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2 | 1 | -1.2345678901234e+200
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(2 rows)
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SELECT f1 AS two,
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max(f2) + min(f2) AS max_plus_min,
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min(f3) - 1 AS min_minus_1
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FROM TEMP_GROUP
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GROUP BY f1
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ORDER BY two, min_minus_1;
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two | max_plus_min | min_minus_1
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-----+--------------+-----------------------
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1 | 0 | -1
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2 | 0 | -1.2345678901234e+200
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(2 rows)
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DROP TABLE TEMP_INT2;
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DROP TABLE TEMP_INT4;
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DROP TABLE TEMP_FLOAT;
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DROP TABLE TEMP_GROUP;
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