Accept "+infinity" in date and timestamp[tz] input.

The float and numeric types accept this variant spelling of
"infinity", so it seems like the datetime types should too.

Vik Fearing, some cosmetic mods by me

Discussion: https://postgr.es/m/d0bef637-2dbd-0a5d-e539-48243b6f6c5e@postgresfriends.org

6 files changed, 24 insertions, 0 deletions

diff --git a/src/test/regress/expected/date.out b/src/test/regress/expected/date.out
index f8f83e40e95..c0dec448e1c 100644
--- a/src/test/regress/expected/date.out
+++ b/src/test/regress/expected/date.out
@@ -1373,6 +1373,12 @@ select isfinite('infinity'::date), isfinite('-infinity'::date), isfinite('today'
  f        | f        | t
 (1 row)
 
+select 'infinity'::date = '+infinity'::date as t;
+ t 
+---
+ t
+(1 row)
+
 --
 -- oscillating fields from non-finite date:
 --
diff --git a/src/test/regress/expected/timestamp.out b/src/test/regress/expected/timestamp.out
index be66274738e..edc6912e7ab 100644
--- a/src/test/regress/expected/timestamp.out
+++ b/src/test/regress/expected/timestamp.out
@@ -76,6 +76,12 @@ TRUNCATE TIMESTAMP_TBL;
 INSERT INTO TIMESTAMP_TBL VALUES ('-infinity');
 INSERT INTO TIMESTAMP_TBL VALUES ('infinity');
 INSERT INTO TIMESTAMP_TBL VALUES ('epoch');
+SELECT timestamp 'infinity' = timestamp '+infinity' AS t;
+ t 
+---
+ t
+(1 row)
+
 -- Postgres v6.0 standard output format
 INSERT INTO TIMESTAMP_TBL VALUES ('Mon Feb 10 17:32:01 1997 PST');
 -- Variations on Postgres v6.1 standard output format
diff --git a/src/test/regress/expected/timestamptz.out b/src/test/regress/expected/timestamptz.out
index fb06acbccc4..00379fd0fd3 100644
--- a/src/test/regress/expected/timestamptz.out
+++ b/src/test/regress/expected/timestamptz.out
@@ -87,6 +87,12 @@ TRUNCATE TIMESTAMPTZ_TBL;
 INSERT INTO TIMESTAMPTZ_TBL VALUES ('-infinity');
 INSERT INTO TIMESTAMPTZ_TBL VALUES ('infinity');
 INSERT INTO TIMESTAMPTZ_TBL VALUES ('epoch');
+SELECT timestamptz 'infinity' = timestamptz '+infinity' AS t;
+ t 
+---
+ t
+(1 row)
+
 -- Postgres v6.0 standard output format
 INSERT INTO TIMESTAMPTZ_TBL VALUES ('Mon Feb 10 17:32:01 1997 PST');
 -- Variations on Postgres v6.1 standard output format
diff --git a/src/test/regress/sql/date.sql b/src/test/regress/sql/date.sql
index 9fd15be5f98..89982dd2f86 100644
--- a/src/test/regress/sql/date.sql
+++ b/src/test/regress/sql/date.sql
@@ -329,6 +329,8 @@ select 'infinity'::date, '-infinity'::date;
 select 'infinity'::date > 'today'::date as t;
 select '-infinity'::date < 'today'::date as t;
 select isfinite('infinity'::date), isfinite('-infinity'::date), isfinite('today'::date);
+select 'infinity'::date = '+infinity'::date as t;
+
 --
 -- oscillating fields from non-finite date:
 --
diff --git a/src/test/regress/sql/timestamp.sql b/src/test/regress/sql/timestamp.sql
index e1175b12ce2..1d580f77f15 100644
--- a/src/test/regress/sql/timestamp.sql
+++ b/src/test/regress/sql/timestamp.sql
@@ -49,6 +49,8 @@ INSERT INTO TIMESTAMP_TBL VALUES ('-infinity');
 INSERT INTO TIMESTAMP_TBL VALUES ('infinity');
 INSERT INTO TIMESTAMP_TBL VALUES ('epoch');
 
+SELECT timestamp 'infinity' = timestamp '+infinity' AS t;
+
 -- Postgres v6.0 standard output format
 INSERT INTO TIMESTAMP_TBL VALUES ('Mon Feb 10 17:32:01 1997 PST');
 
diff --git a/src/test/regress/sql/timestamptz.sql b/src/test/regress/sql/timestamptz.sql
index 27263b3e0bb..4905dd08317 100644
--- a/src/test/regress/sql/timestamptz.sql
+++ b/src/test/regress/sql/timestamptz.sql
@@ -50,6 +50,8 @@ INSERT INTO TIMESTAMPTZ_TBL VALUES ('-infinity');
 INSERT INTO TIMESTAMPTZ_TBL VALUES ('infinity');
 INSERT INTO TIMESTAMPTZ_TBL VALUES ('epoch');
 
+SELECT timestamptz 'infinity' = timestamptz '+infinity' AS t;
+
 -- Postgres v6.0 standard output format
 INSERT INTO TIMESTAMPTZ_TBL VALUES ('Mon Feb 10 17:32:01 1997 PST');