src/test/singlenode_regress/sql/numerology.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;