From 6ca4ea8a80072a0e9ab060cd96a316a64c56cdae Mon Sep 17 00:00:00 2001 From: Bruce Momjian Date: Wed, 6 Sep 2006 02:05:41 +0000 Subject: [PATCH] Add interval division/multiplication regression tests. Michael Glaesemann --- src/test/regress/expected/interval.out | 66 ++++++++++++++++++++++++++ src/test/regress/sql/interval.sql | 35 ++++++++++++++ 2 files changed, 101 insertions(+) diff --git a/src/test/regress/expected/interval.out b/src/test/regress/expected/interval.out index 3a5fb12cbc..f7c35deca1 100644 --- a/src/test/regress/expected/interval.out +++ b/src/test/regress/expected/interval.out @@ -208,6 +208,72 @@ SELECT '' AS fortyfive, r1.*, r2.* | 34 years | 6 years (45 rows) +-- Test multiplication and division with intervals. +-- Floating point arithmetic rounding errors can lead to unexpected results, +-- though the code attempts to do the right thing and round up to days and +-- minutes to avoid results such as '3 days 24:00 hours' or '14:20:60'. +-- Note that it is expected for some day components to be greater than 29 and +-- some time components be greater than 23:59:59 due to how intervals are +-- stored internally. +CREATE TABLE INTERVAL_MULDIV_TBL (span interval); +COPY INTERVAL_MULDIV_TBL FROM STDIN; +SELECT span * 0.3 AS product +FROM INTERVAL_MULDIV_TBL; + product +------------------------------------ + 1 year 12 days 122:24:00 + -1 years -12 days +93:36:00 + -3 days -14:24:00 + 2 mons 13 days 01:22:28.80 + -10 mons +120 days 37:28:21.6567 + 1 mon 6 days + 4 mons 6 days + 24 years 11 mons 320 days 16:48:00 +(8 rows) + +SELECT span * 8.2 AS product +FROM INTERVAL_MULDIV_TBL; + product +--------------------------------------------- + 28 years 104 days 2961:36:00 + -28 years -104 days +2942:24:00 + -98 days -09:36:00 + 6 years 1 mon -197 days +93:34:27.20 + -24 years -7 mons +3946 days 640:15:11.9498 + 2 years 8 mons 24 days + 9 years 6 mons 24 days + 682 years 7 mons 8215 days 19:12:00 +(8 rows) + +SELECT span / 10 AS quotient +FROM INTERVAL_MULDIV_TBL; + quotient +---------------------------------- + 4 mons 4 days 40:48:00 + -4 mons -4 days +31:12:00 + -1 days -04:48:00 + 25 days -15:32:30.40 + -3 mons +30 days 12:29:27.2189 + 12 days + 1 mon 12 days + 8 years 3 mons 126 days 21:36:00 +(8 rows) + +SELECT span / 100 AS quotient +FROM INTERVAL_MULDIV_TBL; + quotient +------------------------- + 12 days 13:40:48 + -12 days -06:28:48 + -02:52:48 + 2 days 10:26:44.96 + -6 days +01:14:56.72189 + 1 day 04:48:00 + 4 days 04:48:00 + 9 mons 39 days 16:33:36 +(8 rows) + +DROP TABLE INTERVAL_MULDIV_TBL; SET DATESTYLE = 'postgres'; SELECT '' AS ten, * FROM INTERVAL_TBL; ten | f1 diff --git a/src/test/regress/sql/interval.sql b/src/test/regress/sql/interval.sql index f38b01e45d..9b2e62514d 100644 --- a/src/test/regress/sql/interval.sql +++ b/src/test/regress/sql/interval.sql @@ -59,6 +59,41 @@ SELECT '' AS fortyfive, r1.*, r2.* WHERE r1.f1 > r2.f1 ORDER BY r1.f1, r2.f1; + +-- Test multiplication and division with intervals. +-- Floating point arithmetic rounding errors can lead to unexpected results, +-- though the code attempts to do the right thing and round up to days and +-- minutes to avoid results such as '3 days 24:00 hours' or '14:20:60'. +-- Note that it is expected for some day components to be greater than 29 and +-- some time components be greater than 23:59:59 due to how intervals are +-- stored internally. + +CREATE TABLE INTERVAL_MULDIV_TBL (span interval); +COPY INTERVAL_MULDIV_TBL FROM STDIN; +41 mon 12 days 360:00 +-41 mon -12 days +360:00 +-12 days +9 mon -27 days 12:34:56 +-3 years 482 days 76:54:32.189 +4 mon +14 mon +999 mon 999 days +\. + +SELECT span * 0.3 AS product +FROM INTERVAL_MULDIV_TBL; + +SELECT span * 8.2 AS product +FROM INTERVAL_MULDIV_TBL; + +SELECT span / 10 AS quotient +FROM INTERVAL_MULDIV_TBL; + +SELECT span / 100 AS quotient +FROM INTERVAL_MULDIV_TBL; + +DROP TABLE INTERVAL_MULDIV_TBL; + SET DATESTYLE = 'postgres'; SELECT '' AS ten, * FROM INTERVAL_TBL; -- 2.40.0