postgresql/src/test/regress/sql/numerology.sql
Peter Eisentraut c06d6aa4c3 Clean up ancient test style
Many older tests where written in a style like

    SELECT '' AS two, i.* FROM INT2_TBL

where the first column indicated the number of expected result rows.
This has gotten increasingly out of date, as the test data fixtures
have expanded, so a lot of these were wrong and misleading.  Moreover,
this style isn't really necessary, since the psql output already shows
the number of result rows.

To clean this up, remove all those extra columns.

Discussion: https://www.postgresql.org/message-id/flat/1a25312b-2686-380d-3c67-7a69094a999f%40enterprisedb.com
2020-12-15 22:03:39 +01:00

98 lines
2 KiB
SQL

--
-- 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 f1 FROM TEMP_FLOAT
ORDER BY f1;
-- 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 f1 FROM TEMP_INT4
ORDER BY f1;
-- 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 f1 FROM TEMP_INT2
ORDER BY f1;
--
-- 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 ORDER BY 1;
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;
-- GROUP BY a result column name is not legal per SQL92, but we accept it
-- anyway (if the name is not the name of any column exposed by FROM).
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;
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;
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;
DROP TABLE TEMP_INT2;
DROP TABLE TEMP_INT4;
DROP TABLE TEMP_FLOAT;
DROP TABLE TEMP_GROUP;