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Allow to_timestamp(float8) to convert float infinity to timestamp infinity.

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With the original SQL-function implementation, such cases failed because
we don't support infinite intervals.  Converting the function to C lets
us bypass the interval representation, which should be a bit faster as
well as more flexible.

Vitaly Burovoy, reviewed by Anastasia Lubennikova
This commit is contained in:
Tom Lane
2016-03-29 17:09:21 -04:00
parent 96f8373cad
commit e511d878f3
7 changed files with 149 additions and 26 deletions
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2
src/include/catalog/catversion.h
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@ -53,6 +53,6 @@
*/
/* yyyymmddN */
#define CATALOG_VERSION_NO 201603291
#define CATALOG_VERSION_NO 201603292
#endif

2
src/include/catalog/pg_proc.h
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@ -1202,7 +1202,7 @@ DATA(insert OID = 1154 ( timestamptz_lt PGNSP PGUID 12 1 0 0 0 f f f t t f i
DATA(insert OID = 1155 ( timestamptz_le PGNSP PGUID 12 1 0 0 0 f f f t t f i s 2 0 16 "1184 1184" _null_ _null_ _null_ _null_ _null_ timestamp_le _null_ _null_ _null_ ));
DATA(insert OID = 1156 ( timestamptz_ge PGNSP PGUID 12 1 0 0 0 f f f t t f i s 2 0 16 "1184 1184" _null_ _null_ _null_ _null_ _null_ timestamp_ge _null_ _null_ _null_ ));
DATA(insert OID = 1157 ( timestamptz_gt PGNSP PGUID 12 1 0 0 0 f f f t t f i s 2 0 16 "1184 1184" _null_ _null_ _null_ _null_ _null_ timestamp_gt _null_ _null_ _null_ ));
DATA(insert OID = 1158 ( to_timestamp PGNSP PGUID 14 1 0 0 0 f f f f t f i s 1 0 1184 "701" _null_ _null_ _null_ _null_ _null_ "select (''epoch''::pg_catalog.timestamptz + $1 * ''1 second''::pg_catalog.interval)" _null_ _null_ _null_ ));
DATA(insert OID = 1158 ( to_timestamp PGNSP PGUID 12 1 0 0 0 f f f f t f i s 1 0 1184 "701" _null_ _null_ _null_ _null_ _null_ float8_timestamptz _null_ _null_ _null_ ));
DESCR("convert UNIX epoch to timestamptz");
DATA(insert OID = 3995 ( timestamp_zone_transform PGNSP PGUID 12 1 0 0 0 f f f f t f i s 1 0 2281 "2281" _null_ _null_ _null_ _null_ _null_ timestamp_zone_transform _null_ _null_ _null_ ));
DESCR("transform a time zone adjustment");

1
src/include/utils/timestamp.h
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@ -124,6 +124,7 @@ extern Datum timestamp_cmp_timestamptz(PG_FUNCTION_ARGS);
extern Datum make_timestamp(PG_FUNCTION_ARGS);
extern Datum make_timestamptz(PG_FUNCTION_ARGS);
extern Datum make_timestamptz_at_timezone(PG_FUNCTION_ARGS);
extern Datum float8_timestamptz(PG_FUNCTION_ARGS);
extern Datum timestamptz_eq_timestamp(PG_FUNCTION_ARGS);
extern Datum timestamptz_ne_timestamp(PG_FUNCTION_ARGS);