From 8af1fccba2b1a46d58fad46ed8d03e8c92fe1152 Mon Sep 17 00:00:00 2001 From: Jeff Davis Date: Thu, 18 Jul 2019 16:55:59 -0700 Subject: [PATCH] Fix daterange canonicalization for +/- infinity. The values 'infinity' and '-infinity' are a part of the DATE type itself, so a bound of the date 'infinity' is not the same as an unbounded/infinite range. However, it is still wrong to try to canonicalize such values, because adding or subtracting one has no effect. Fix by treating 'infinity' and '-infinity' the same as unbounded ranges for the purposes of canonicalization (but not other purposes). Backpatch to all versions because it is inconsistent with the documented behavior. Note that this could be an incompatibility for applications relying on the behavior contrary to the documentation. Author: Laurenz Albe Reviewed-by: Thomas Munro Discussion: https://postgr.es/m/77f24ea19ab802bc9bc60ddbb8977ee2d646aec1.camel%40cybertec.at Backpatch-through: 9.4 --- src/backend/utils/adt/rangetypes.c | 4 ++-- src/test/regress/expected/rangetypes.out | 24 ++++++++++++++++++++++++ src/test/regress/sql/rangetypes.sql | 4 ++++ 3 files changed, 30 insertions(+), 2 deletions(-) diff --git a/src/backend/utils/adt/rangetypes.c b/src/backend/utils/adt/rangetypes.c index 88f857b509..288052347b 100644 --- a/src/backend/utils/adt/rangetypes.c +++ b/src/backend/utils/adt/rangetypes.c @@ -1366,13 +1366,13 @@ daterange_canonical(PG_FUNCTION_ARGS) if (empty) PG_RETURN_RANGE(r); - if (!lower.infinite && !lower.inclusive) + if (!lower.infinite && !DATE_NOT_FINITE(lower.val) && !lower.inclusive) { lower.val = DirectFunctionCall2(date_pli, lower.val, Int32GetDatum(1)); lower.inclusive = true; } - if (!upper.infinite && upper.inclusive) + if (!upper.infinite && !DATE_NOT_FINITE(upper.val) && upper.inclusive) { upper.val = DirectFunctionCall2(date_pli, upper.val, Int32GetDatum(1)); upper.inclusive = false; diff --git a/src/test/regress/expected/rangetypes.out b/src/test/regress/expected/rangetypes.out index ae03246050..6756a2151b 100644 --- a/src/test/regress/expected/rangetypes.out +++ b/src/test/regress/expected/rangetypes.out @@ -652,6 +652,30 @@ select daterange('2000-01-10'::date, '2000-01-11'::date, '(]'); [01-11-2000,01-12-2000) (1 row) +select daterange('-infinity'::date, '2000-01-01'::date, '()'); + daterange +------------------------ + (-infinity,01-01-2000) +(1 row) + +select daterange('-infinity'::date, '2000-01-01'::date, '[)'); + daterange +------------------------ + [-infinity,01-01-2000) +(1 row) + +select daterange('2000-01-01'::date, 'infinity'::date, '[)'); + daterange +----------------------- + [01-01-2000,infinity) +(1 row) + +select daterange('2000-01-01'::date, 'infinity'::date, '[]'); + daterange +----------------------- + [01-01-2000,infinity] +(1 row) + -- test GiST index that's been built incrementally create table test_range_gist(ir int4range); create index test_range_gist_idx on test_range_gist using gist (ir); diff --git a/src/test/regress/sql/rangetypes.sql b/src/test/regress/sql/rangetypes.sql index 9148d1c893..62cb474a42 100644 --- a/src/test/regress/sql/rangetypes.sql +++ b/src/test/regress/sql/rangetypes.sql @@ -165,6 +165,10 @@ select daterange('2000-01-10'::date, '2000-01-20'::date, '(]'); select daterange('2000-01-10'::date, '2000-01-20'::date, '()'); select daterange('2000-01-10'::date, '2000-01-11'::date, '()'); select daterange('2000-01-10'::date, '2000-01-11'::date, '(]'); +select daterange('-infinity'::date, '2000-01-01'::date, '()'); +select daterange('-infinity'::date, '2000-01-01'::date, '[)'); +select daterange('2000-01-01'::date, 'infinity'::date, '[)'); +select daterange('2000-01-01'::date, 'infinity'::date, '[]'); -- test GiST index that's been built incrementally create table test_range_gist(ir int4range); -- 2.50.1