1-- 2-- NUMEROLOGY 3-- Test various combinations of numeric types and functions. 4-- 5 6-- 7-- Test implicit type conversions 8-- This fails for Postgres v6.1 (and earlier?) 9-- so let's try explicit conversions for now - tgl 97/05/07 10-- 11 12CREATE TABLE TEMP_FLOAT (f1 FLOAT8); 13 14INSERT INTO TEMP_FLOAT (f1) 15 SELECT float8(f1) FROM INT4_TBL; 16 17INSERT INTO TEMP_FLOAT (f1) 18 SELECT float8(f1) FROM INT2_TBL; 19 20SELECT '' AS ten, f1 FROM TEMP_FLOAT 21 ORDER BY f1; 22 23-- int4 24 25CREATE TABLE TEMP_INT4 (f1 INT4); 26 27INSERT INTO TEMP_INT4 (f1) 28 SELECT int4(f1) FROM FLOAT8_TBL 29 WHERE (f1 > -2147483647) AND (f1 < 2147483647); 30 31INSERT INTO TEMP_INT4 (f1) 32 SELECT int4(f1) FROM INT2_TBL; 33 34SELECT '' AS nine, f1 FROM TEMP_INT4 35 ORDER BY f1; 36 37-- int2 38 39CREATE TABLE TEMP_INT2 (f1 INT2); 40 41INSERT INTO TEMP_INT2 (f1) 42 SELECT int2(f1) FROM FLOAT8_TBL 43 WHERE (f1 >= -32767) AND (f1 <= 32767); 44 45INSERT INTO TEMP_INT2 (f1) 46 SELECT int2(f1) FROM INT4_TBL 47 WHERE (f1 >= -32767) AND (f1 <= 32767); 48 49SELECT '' AS five, f1 FROM TEMP_INT2 50 ORDER BY f1; 51 52-- 53-- Group-by combinations 54-- 55 56CREATE TABLE TEMP_GROUP (f1 INT4, f2 INT4, f3 FLOAT8); 57 58INSERT INTO TEMP_GROUP 59 SELECT 1, (- i.f1), (- f.f1) 60 FROM INT4_TBL i, FLOAT8_TBL f; 61 62INSERT INTO TEMP_GROUP 63 SELECT 2, i.f1, f.f1 64 FROM INT4_TBL i, FLOAT8_TBL f; 65 66SELECT DISTINCT f1 AS two FROM TEMP_GROUP ORDER BY 1; 67 68SELECT f1 AS two, max(f3) AS max_float, min(f3) as min_float 69 FROM TEMP_GROUP 70 GROUP BY f1 71 ORDER BY two, max_float, min_float; 72 73-- GROUP BY a result column name is not legal per SQL92, but we accept it 74-- anyway (if the name is not the name of any column exposed by FROM). 75SELECT f1 AS two, max(f3) AS max_float, min(f3) AS min_float 76 FROM TEMP_GROUP 77 GROUP BY two 78 ORDER BY two, max_float, min_float; 79 80SELECT f1 AS two, (max(f3) + 1) AS max_plus_1, (min(f3) - 1) AS min_minus_1 81 FROM TEMP_GROUP 82 GROUP BY f1 83 ORDER BY two, min_minus_1; 84 85SELECT f1 AS two, 86 max(f2) + min(f2) AS max_plus_min, 87 min(f3) - 1 AS min_minus_1 88 FROM TEMP_GROUP 89 GROUP BY f1 90 ORDER BY two, min_minus_1; 91 92DROP TABLE TEMP_INT2; 93 94DROP TABLE TEMP_INT4; 95 96DROP TABLE TEMP_FLOAT; 97 98DROP TABLE TEMP_GROUP; 99