On Tue, Jan 26, 2016 at 7:00 PM, Torsten Zuehlsdorff
<mailingli...@toco-domains.de> wrote:
>
> On 26.01.2016 07:52, Simon Riggs wrote:
>
>>> Imagine for example a script that in some rare cases passes happens to
>>> pass infinity into generate_series() - in that case I'd much rather error
>>> out than wait till the end of the universe.
>>>
>>> So +1 from me to checking for infinity.
>>>
>>
>> +1
>>
>> ERROR infinite result sets are not supported, yet
>
>
> Maybe we should skip the "yet". Or do we really plan to support them in
> (infinite) future? ;)
>
> +1 from me to check infinity also.
Something like the patch attached would be fine? This wins a backpatch
because the query continuously running eats memory, no?
--
Michael
diff --git a/src/backend/utils/adt/timestamp.c b/src/backend/utils/adt/timestamp.c
index 1525d2a..2f9e8d0 100644
--- a/src/backend/utils/adt/timestamp.c
+++ b/src/backend/utils/adt/timestamp.c
@@ -5405,6 +5405,16 @@ generate_series_timestamp(PG_FUNCTION_ARGS)
MemoryContext oldcontext;
Interval interval_zero;
+ /* handle infinite in start and stop values */
+ if (TIMESTAMP_NOT_FINITE(start))
+ ereport(ERROR,
+ (errcode(ERRCODE_DATETIME_VALUE_OUT_OF_RANGE),
+ errmsg("start value cannot be infinite")));
+ if (TIMESTAMP_NOT_FINITE(finish))
+ ereport(ERROR,
+ (errcode(ERRCODE_DATETIME_VALUE_OUT_OF_RANGE),
+ errmsg("stop value cannot be infinite")));
+
/* create a function context for cross-call persistence */
funcctx = SRF_FIRSTCALL_INIT();
@@ -5486,6 +5496,16 @@ generate_series_timestamptz(PG_FUNCTION_ARGS)
MemoryContext oldcontext;
Interval interval_zero;
+ /* handle infinite in start and stop values */
+ if (TIMESTAMP_NOT_FINITE(start))
+ ereport(ERROR,
+ (errcode(ERRCODE_DATETIME_VALUE_OUT_OF_RANGE),
+ errmsg("start value cannot be infinite")));
+ if (TIMESTAMP_NOT_FINITE(finish))
+ ereport(ERROR,
+ (errcode(ERRCODE_DATETIME_VALUE_OUT_OF_RANGE),
+ errmsg("stop value cannot be infinite")));
+
/* create a function context for cross-call persistence */
funcctx = SRF_FIRSTCALL_INIT();
diff --git a/src/test/regress/expected/timestamp.out b/src/test/regress/expected/timestamp.out
index e9f5e77..ac708e2 100644
--- a/src/test/regress/expected/timestamp.out
+++ b/src/test/regress/expected/timestamp.out
@@ -1592,3 +1592,8 @@ SELECT make_timestamp(2014,12,28,6,30,45.887);
Sun Dec 28 06:30:45.887 2014
(1 row)
+-- Tests for generate_series
+SELECT generate_series(now(), 'infinity'::timestamp, interval '1 hour');
+ERROR: stop value cannot be infinite
+SELECT generate_series('infinity'::timestamp, now(), interval '1 hour');
+ERROR: start value cannot be infinite
diff --git a/src/test/regress/expected/timestamptz.out b/src/test/regress/expected/timestamptz.out
index 40a2254..3ec7ddb 100644
--- a/src/test/regress/expected/timestamptz.out
+++ b/src/test/regress/expected/timestamptz.out
@@ -2487,3 +2487,8 @@ SELECT '2007-12-09 07:30:00 UTC'::timestamptz AT TIME ZONE 'VET';
Sun Dec 09 03:00:00 2007
(1 row)
+-- Tests for generate_series
+SELECT generate_series(now(), 'infinity'::timestamp, interval '1 hour');
+ERROR: stop value cannot be infinite
+SELECT generate_series('infinity'::timestamp, now(), interval '1 hour');
+ERROR: start value cannot be infinite
diff --git a/src/test/regress/sql/timestamp.sql b/src/test/regress/sql/timestamp.sql
index b22cd48..898d9cb 100644
--- a/src/test/regress/sql/timestamp.sql
+++ b/src/test/regress/sql/timestamp.sql
@@ -225,3 +225,7 @@ SELECT '' AS to_char_11, to_char(d1, 'FMIYYY FMIYY FMIY FMI FMIW FMIDDD FMID')
-- timestamp numeric fields constructor
SELECT make_timestamp(2014,12,28,6,30,45.887);
+
+-- Tests for generate_series
+SELECT generate_series(now(), 'infinity'::timestamp, interval '1 hour');
+SELECT generate_series('infinity'::timestamp, now(), interval '1 hour');
diff --git a/src/test/regress/sql/timestamptz.sql b/src/test/regress/sql/timestamptz.sql
index f4b455e..b565452 100644
--- a/src/test/regress/sql/timestamptz.sql
+++ b/src/test/regress/sql/timestamptz.sql
@@ -432,3 +432,7 @@ SELECT '2007-12-09 07:00:00 UTC'::timestamptz AT TIME ZONE 'VET';
SELECT '2007-12-09 07:00:01 UTC'::timestamptz AT TIME ZONE 'VET';
SELECT '2007-12-09 07:29:59 UTC'::timestamptz AT TIME ZONE 'VET';
SELECT '2007-12-09 07:30:00 UTC'::timestamptz AT TIME ZONE 'VET';
+
+-- Tests for generate_series
+SELECT generate_series(now(), 'infinity'::timestamp, interval '1 hour');
+SELECT generate_series('infinity'::timestamp, now(), interval '1 hour');
--
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