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postgresql/src/include/utils/timestamp.h

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Implement "date/time grand unification". Transform datetime and timespan into timestamp and interval. Deprecate datetime and timespan, though translate to new types in gram.y. Transform all datetime and timespan catalog entries into new types. Make "INTERVAL" reserved word allowed as a column identifier in gram.y. Remove dt.h, dt.c files, and retarget datetime.h, datetime.c as utility routines for all date/time types. date.{h,c} now deals with date, time types. timestamp.{h,c} now deals with timestamp, interval types. nabstime.{h,c} now deals with abstime, reltime, tinterval types. Make NUMERIC a known native type for purposes of type coersion. Not tested.
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/*-------------------------------------------------------------------------
*
* timestamp.h
* Definitions for the SQL92 "timestamp" and "interval" types.
*
Change Copyright from PostgreSQL, Inc to PostgreSQL Global Development Group.
2001-01-24 20:43:33 +01:00
* Portions Copyright (c) 1996-2001, PostgreSQL Global Development Group
Implement "date/time grand unification". Transform datetime and timespan into timestamp and interval. Deprecate datetime and timespan, though translate to new types in gram.y. Transform all datetime and timespan catalog entries into new types. Make "INTERVAL" reserved word allowed as a column identifier in gram.y. Remove dt.h, dt.c files, and retarget datetime.h, datetime.c as utility routines for all date/time types. date.{h,c} now deals with date, time types. timestamp.{h,c} now deals with timestamp, interval types. nabstime.{h,c} now deals with abstime, reltime, tinterval types. Make NUMERIC a known native type for purposes of type coersion. Not tested.
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* Portions Copyright (c) 1994, Regents of the University of California
*
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* $Id: timestamp.h,v 1.16 2001/03/22 04:01:14 momjian Exp $
Implement "date/time grand unification". Transform datetime and timespan into timestamp and interval. Deprecate datetime and timespan, though translate to new types in gram.y. Transform all datetime and timespan catalog entries into new types. Make "INTERVAL" reserved word allowed as a column identifier in gram.y. Remove dt.h, dt.c files, and retarget datetime.h, datetime.c as utility routines for all date/time types. date.{h,c} now deals with date, time types. timestamp.{h,c} now deals with timestamp, interval types. nabstime.{h,c} now deals with abstime, reltime, tinterval types. Make NUMERIC a known native type for purposes of type coersion. Not tested.
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*
*-------------------------------------------------------------------------
*/
#ifndef TIMESTAMP_H
#define TIMESTAMP_H
#include <time.h>
#include <math.h>
#include <limits.h>
#include cleanups
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#include <float.h>
Implement "date/time grand unification". Transform datetime and timespan into timestamp and interval. Deprecate datetime and timespan, though translate to new types in gram.y. Transform all datetime and timespan catalog entries into new types. Make "INTERVAL" reserved word allowed as a column identifier in gram.y. Remove dt.h, dt.c files, and retarget datetime.h, datetime.c as utility routines for all date/time types. date.{h,c} now deals with date, time types. timestamp.{h,c} now deals with timestamp, interval types. nabstime.{h,c} now deals with abstime, reltime, tinterval types. Make NUMERIC a known native type for purposes of type coersion. Not tested.
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Another round of updates for new fmgr, mostly in the datetime code.
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#include "fmgr.h"
Implement "date/time grand unification". Transform datetime and timespan into timestamp and interval. Deprecate datetime and timespan, though translate to new types in gram.y. Transform all datetime and timespan catalog entries into new types. Make "INTERVAL" reserved word allowed as a column identifier in gram.y. Remove dt.h, dt.c files, and retarget datetime.h, datetime.c as utility routines for all date/time types. date.{h,c} now deals with date, time types. timestamp.{h,c} now deals with timestamp, interval types. nabstime.{h,c} now deals with abstime, reltime, tinterval types. Make NUMERIC a known native type for purposes of type coersion. Not tested.
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/*
* Timestamp represents absolute time.
* Interval represents delta time. Keep track of months (and years)
* separately since the elapsed time spanned is unknown until instantiated
* relative to an absolute time.
*
* Note that Postgres uses "time interval" to mean a bounded interval,
* consisting of a beginning and ending time, not a time span - thomas 97/03/20
*/
typedef double Timestamp;
typedef struct
{
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double time; /* all time units other than months and
* years */
int32 month; /* months and years, after time for
* alignment */
Implement "date/time grand unification". Transform datetime and timespan into timestamp and interval. Deprecate datetime and timespan, though translate to new types in gram.y. Transform all datetime and timespan catalog entries into new types. Make "INTERVAL" reserved word allowed as a column identifier in gram.y. Remove dt.h, dt.c files, and retarget datetime.h, datetime.c as utility routines for all date/time types. date.{h,c} now deals with date, time types. timestamp.{h,c} now deals with timestamp, interval types. nabstime.{h,c} now deals with abstime, reltime, tinterval types. Make NUMERIC a known native type for purposes of type coersion. Not tested.
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} Interval;
Another round of updates for new fmgr, mostly in the datetime code.
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/*
* Macros for fmgr-callable functions.
*
* For Timestamp, we make use of the same support routines as for float8.
* Therefore Timestamp is pass-by-reference if and only if float8 is!
*/
#define DatumGetTimestamp(X) ((Timestamp) DatumGetFloat8(X))
#define DatumGetIntervalP(X) ((Interval *) DatumGetPointer(X))
#define TimestampGetDatum(X) Float8GetDatum(X)
#define IntervalPGetDatum(X) PointerGetDatum(X)
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#define PG_GETARG_TIMESTAMP(n) DatumGetTimestamp(PG_GETARG_DATUM(n))
Another round of updates for new fmgr, mostly in the datetime code.
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#define PG_GETARG_INTERVAL_P(n) DatumGetIntervalP(PG_GETARG_DATUM(n))
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#define PG_RETURN_TIMESTAMP(x) return TimestampGetDatum(x)
Another round of updates for new fmgr, mostly in the datetime code.
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#define PG_RETURN_INTERVAL_P(x) return IntervalPGetDatum(x)
Implement "date/time grand unification". Transform datetime and timespan into timestamp and interval. Deprecate datetime and timespan, though translate to new types in gram.y. Transform all datetime and timespan catalog entries into new types. Make "INTERVAL" reserved word allowed as a column identifier in gram.y. Remove dt.h, dt.c files, and retarget datetime.h, datetime.c as utility routines for all date/time types. date.{h,c} now deals with date, time types. timestamp.{h,c} now deals with timestamp, interval types. nabstime.{h,c} now deals with abstime, reltime, tinterval types. Make NUMERIC a known native type for purposes of type coersion. Not tested.
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#ifdef NAN
#define DT_INVALID (NAN)
#else
#define DT_INVALID (DBL_MIN+DBL_MIN)
#endif
#ifdef HUGE_VAL
#define DT_NOBEGIN (-HUGE_VAL)
#define DT_NOEND (HUGE_VAL)
#else
#define DT_NOBEGIN (-DBL_MAX)
#define DT_NOEND (DBL_MAX)
#endif
#define DT_CURRENT (DBL_MIN)
#define DT_EPOCH (-DBL_MIN)
Remove obsolete PowerPC-specific hack for comparisons to DBL_MIN (per recent discussion with Tatsuo). Hopefully the compilers with that old bug are all long gone.
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#define TIMESTAMP_INVALID(j) do {j = DT_INVALID;} while (0)
Implement "date/time grand unification". Transform datetime and timespan into timestamp and interval. Deprecate datetime and timespan, though translate to new types in gram.y. Transform all datetime and timespan catalog entries into new types. Make "INTERVAL" reserved word allowed as a column identifier in gram.y. Remove dt.h, dt.c files, and retarget datetime.h, datetime.c as utility routines for all date/time types. date.{h,c} now deals with date, time types. timestamp.{h,c} now deals with timestamp, interval types. nabstime.{h,c} now deals with abstime, reltime, tinterval types. Make NUMERIC a known native type for purposes of type coersion. Not tested.
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#ifdef NAN
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#define TIMESTAMP_IS_INVALID(j) (isnan(j))
Implement "date/time grand unification". Transform datetime and timespan into timestamp and interval. Deprecate datetime and timespan, though translate to new types in gram.y. Transform all datetime and timespan catalog entries into new types. Make "INTERVAL" reserved word allowed as a column identifier in gram.y. Remove dt.h, dt.c files, and retarget datetime.h, datetime.c as utility routines for all date/time types. date.{h,c} now deals with date, time types. timestamp.{h,c} now deals with timestamp, interval types. nabstime.{h,c} now deals with abstime, reltime, tinterval types. Make NUMERIC a known native type for purposes of type coersion. Not tested.
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#else
Remove obsolete PowerPC-specific hack for comparisons to DBL_MIN (per recent discussion with Tatsuo). Hopefully the compilers with that old bug are all long gone.
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#define TIMESTAMP_IS_INVALID(j) ((j) == DT_INVALID)
Implement "date/time grand unification". Transform datetime and timespan into timestamp and interval. Deprecate datetime and timespan, though translate to new types in gram.y. Transform all datetime and timespan catalog entries into new types. Make "INTERVAL" reserved word allowed as a column identifier in gram.y. Remove dt.h, dt.c files, and retarget datetime.h, datetime.c as utility routines for all date/time types. date.{h,c} now deals with date, time types. timestamp.{h,c} now deals with timestamp, interval types. nabstime.{h,c} now deals with abstime, reltime, tinterval types. Make NUMERIC a known native type for purposes of type coersion. Not tested.
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#endif
Remove obsolete PowerPC-specific hack for comparisons to DBL_MIN (per recent discussion with Tatsuo). Hopefully the compilers with that old bug are all long gone.
2001-03-14 21:12:10 +01:00
#define TIMESTAMP_NOBEGIN(j) do {j = DT_NOBEGIN;} while (0)
#define TIMESTAMP_IS_NOBEGIN(j) ((j) == DT_NOBEGIN)
Implement "date/time grand unification". Transform datetime and timespan into timestamp and interval. Deprecate datetime and timespan, though translate to new types in gram.y. Transform all datetime and timespan catalog entries into new types. Make "INTERVAL" reserved word allowed as a column identifier in gram.y. Remove dt.h, dt.c files, and retarget datetime.h, datetime.c as utility routines for all date/time types. date.{h,c} now deals with date, time types. timestamp.{h,c} now deals with timestamp, interval types. nabstime.{h,c} now deals with abstime, reltime, tinterval types. Make NUMERIC a known native type for purposes of type coersion. Not tested.
2000-02-16 18:26:26 +01:00
Ye-old pgindent run. Same 4-space tabs.
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#define TIMESTAMP_NOEND(j) do {j = DT_NOEND;} while (0)
Remove obsolete PowerPC-specific hack for comparisons to DBL_MIN (per recent discussion with Tatsuo). Hopefully the compilers with that old bug are all long gone.
2001-03-14 21:12:10 +01:00
#define TIMESTAMP_IS_NOEND(j) ((j) == DT_NOEND)
Implement "date/time grand unification". Transform datetime and timespan into timestamp and interval. Deprecate datetime and timespan, though translate to new types in gram.y. Transform all datetime and timespan catalog entries into new types. Make "INTERVAL" reserved word allowed as a column identifier in gram.y. Remove dt.h, dt.c files, and retarget datetime.h, datetime.c as utility routines for all date/time types. date.{h,c} now deals with date, time types. timestamp.{h,c} now deals with timestamp, interval types. nabstime.{h,c} now deals with abstime, reltime, tinterval types. Make NUMERIC a known native type for purposes of type coersion. Not tested.
2000-02-16 18:26:26 +01:00
Remove obsolete PowerPC-specific hack for comparisons to DBL_MIN (per recent discussion with Tatsuo). Hopefully the compilers with that old bug are all long gone.
2001-03-14 21:12:10 +01:00
#define TIMESTAMP_CURRENT(j) do {j = DT_CURRENT;} while (0)
#define TIMESTAMP_IS_CURRENT(j) ((j) == DT_CURRENT)
Implement "date/time grand unification". Transform datetime and timespan into timestamp and interval. Deprecate datetime and timespan, though translate to new types in gram.y. Transform all datetime and timespan catalog entries into new types. Make "INTERVAL" reserved word allowed as a column identifier in gram.y. Remove dt.h, dt.c files, and retarget datetime.h, datetime.c as utility routines for all date/time types. date.{h,c} now deals with date, time types. timestamp.{h,c} now deals with timestamp, interval types. nabstime.{h,c} now deals with abstime, reltime, tinterval types. Make NUMERIC a known native type for purposes of type coersion. Not tested.
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Ye-old pgindent run. Same 4-space tabs.
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#define TIMESTAMP_EPOCH(j) do {j = DT_EPOCH;} while (0)
Remove obsolete PowerPC-specific hack for comparisons to DBL_MIN (per recent discussion with Tatsuo). Hopefully the compilers with that old bug are all long gone.
2001-03-14 21:12:10 +01:00
#define TIMESTAMP_IS_EPOCH(j) ((j) == DT_EPOCH)
Implement "date/time grand unification". Transform datetime and timespan into timestamp and interval. Deprecate datetime and timespan, though translate to new types in gram.y. Transform all datetime and timespan catalog entries into new types. Make "INTERVAL" reserved word allowed as a column identifier in gram.y. Remove dt.h, dt.c files, and retarget datetime.h, datetime.c as utility routines for all date/time types. date.{h,c} now deals with date, time types. timestamp.{h,c} now deals with timestamp, interval types. nabstime.{h,c} now deals with abstime, reltime, tinterval types. Make NUMERIC a known native type for purposes of type coersion. Not tested.
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#define TIMESTAMP_IS_RELATIVE(j) (TIMESTAMP_IS_CURRENT(j) || TIMESTAMP_IS_EPOCH(j))
Ye-old pgindent run. Same 4-space tabs.
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#define TIMESTAMP_NOT_FINITE(j) (TIMESTAMP_IS_INVALID(j) \
Implement "date/time grand unification". Transform datetime and timespan into timestamp and interval. Deprecate datetime and timespan, though translate to new types in gram.y. Transform all datetime and timespan catalog entries into new types. Make "INTERVAL" reserved word allowed as a column identifier in gram.y. Remove dt.h, dt.c files, and retarget datetime.h, datetime.c as utility routines for all date/time types. date.{h,c} now deals with date, time types. timestamp.{h,c} now deals with timestamp, interval types. nabstime.{h,c} now deals with abstime, reltime, tinterval types. Make NUMERIC a known native type for purposes of type coersion. Not tested.
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|| TIMESTAMP_IS_NOBEGIN(j) || TIMESTAMP_IS_NOEND(j))
#define TIMESTAMP_IS_RESERVED(j) (TIMESTAMP_IS_RELATIVE(j) || TIMESTAMP_NOT_FINITE(j))
Ye-old pgindent run. Same 4-space tabs.
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#define INTERVAL_INVALID(j) do {(j).time = DT_INVALID;} while (0)
Implement "date/time grand unification". Transform datetime and timespan into timestamp and interval. Deprecate datetime and timespan, though translate to new types in gram.y. Transform all datetime and timespan catalog entries into new types. Make "INTERVAL" reserved word allowed as a column identifier in gram.y. Remove dt.h, dt.c files, and retarget datetime.h, datetime.c as utility routines for all date/time types. date.{h,c} now deals with date, time types. timestamp.{h,c} now deals with timestamp, interval types. nabstime.{h,c} now deals with abstime, reltime, tinterval types. Make NUMERIC a known native type for purposes of type coersion. Not tested.
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#ifdef NAN
#define INTERVAL_IS_INVALID(j) (isnan((j).time))
#else
#define INTERVAL_IS_INVALID(j) ((j).time == DT_INVALID)
#endif
#define INTERVAL_NOT_FINITE(j) INTERVAL_IS_INVALID(j)
#define TIME_PREC_INV 1000000.0
#define JROUND(j) (rint(((double) (j))*TIME_PREC_INV)/TIME_PREC_INV)
/*
* timestamp.c prototypes
*/
Another round of updates for new fmgr, mostly in the datetime code.
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extern Datum timestamp_in(PG_FUNCTION_ARGS);
extern Datum timestamp_out(PG_FUNCTION_ARGS);
extern Datum timestamp_eq(PG_FUNCTION_ARGS);
extern Datum timestamp_ne(PG_FUNCTION_ARGS);
extern Datum timestamp_lt(PG_FUNCTION_ARGS);
extern Datum timestamp_le(PG_FUNCTION_ARGS);
extern Datum timestamp_ge(PG_FUNCTION_ARGS);
extern Datum timestamp_gt(PG_FUNCTION_ARGS);
extern Datum timestamp_finite(PG_FUNCTION_ARGS);
extern Datum timestamp_cmp(PG_FUNCTION_ARGS);
extern Datum timestamp_smaller(PG_FUNCTION_ARGS);
extern Datum timestamp_larger(PG_FUNCTION_ARGS);
extern Datum interval_in(PG_FUNCTION_ARGS);
extern Datum interval_out(PG_FUNCTION_ARGS);
extern Datum interval_eq(PG_FUNCTION_ARGS);
extern Datum interval_ne(PG_FUNCTION_ARGS);
extern Datum interval_lt(PG_FUNCTION_ARGS);
extern Datum interval_le(PG_FUNCTION_ARGS);
extern Datum interval_ge(PG_FUNCTION_ARGS);
extern Datum interval_gt(PG_FUNCTION_ARGS);
extern Datum interval_finite(PG_FUNCTION_ARGS);
extern Datum interval_cmp(PG_FUNCTION_ARGS);
Clean up bogosities in pg_opclass, pg_amop, pg_amproc. There are amproc entries now for int8 and network hash indexes. int24_ops and int42_ops are gone. pg_opclass no longer contains multiple entries claiming to be the default opclass for the same datatype. opr_sanity regress test extended to catch errors like these in the future.
2000-06-19 05:55:01 +02:00
extern Datum interval_hash(PG_FUNCTION_ARGS);
Another round of updates for new fmgr, mostly in the datetime code.
2000-06-09 03:11:16 +02:00
extern Datum interval_smaller(PG_FUNCTION_ARGS);
extern Datum interval_larger(PG_FUNCTION_ARGS);
extern Datum timestamp_text(PG_FUNCTION_ARGS);
extern Datum text_timestamp(PG_FUNCTION_ARGS);
extern Datum interval_text(PG_FUNCTION_ARGS);
extern Datum text_interval(PG_FUNCTION_ARGS);
extern Datum timestamp_trunc(PG_FUNCTION_ARGS);
extern Datum interval_trunc(PG_FUNCTION_ARGS);
extern Datum timestamp_part(PG_FUNCTION_ARGS);
extern Datum interval_part(PG_FUNCTION_ARGS);
extern Datum timestamp_zone(PG_FUNCTION_ARGS);
Add support for AT TIME ZONE syntax.
2000-11-06 17:05:25 +01:00
extern Datum timestamp_izone(PG_FUNCTION_ARGS);
Another round of updates for new fmgr, mostly in the datetime code.
2000-06-09 03:11:16 +02:00
extern Datum interval_um(PG_FUNCTION_ARGS);
extern Datum interval_pl(PG_FUNCTION_ARGS);
extern Datum interval_mi(PG_FUNCTION_ARGS);
extern Datum interval_mul(PG_FUNCTION_ARGS);
extern Datum mul_d_interval(PG_FUNCTION_ARGS);
extern Datum interval_div(PG_FUNCTION_ARGS);
Revise aggregate functions per earlier discussions in pghackers. There's now only one transition value and transition function. NULL handling in aggregates is a lot cleaner. Also, use Numeric accumulators instead of integer accumulators for sum/avg on integer datatypes --- this avoids overflow at the cost of being a little slower. Implement VARIANCE() and STDDEV() aggregates in the standard backend. Also, enable new LIKE selectivity estimators by default. Unrelated change, but as long as I had to force initdb anyway...
2000-07-17 05:05:41 +02:00
extern Datum interval_accum(PG_FUNCTION_ARGS);
extern Datum interval_avg(PG_FUNCTION_ARGS);
Another round of updates for new fmgr, mostly in the datetime code.
2000-06-09 03:11:16 +02:00
extern Datum timestamp_mi(PG_FUNCTION_ARGS);
extern Datum timestamp_pl_span(PG_FUNCTION_ARGS);
extern Datum timestamp_mi_span(PG_FUNCTION_ARGS);
extern Datum timestamp_age(PG_FUNCTION_ARGS);
extern Datum overlaps_timestamp(PG_FUNCTION_ARGS);
extern Datum now(PG_FUNCTION_ARGS);
/* Internal routines (not fmgr-callable) */
Implement "date/time grand unification". Transform datetime and timespan into timestamp and interval. Deprecate datetime and timespan, though translate to new types in gram.y. Transform all datetime and timespan catalog entries into new types. Make "INTERVAL" reserved word allowed as a column identifier in gram.y. Remove dt.h, dt.c files, and retarget datetime.h, datetime.c as utility routines for all date/time types. date.{h,c} now deals with date, time types. timestamp.{h,c} now deals with timestamp, interval types. nabstime.{h,c} now deals with abstime, reltime, tinterval types. Make NUMERIC a known native type for purposes of type coersion. Not tested.
2000-02-16 18:26:26 +01:00
Ye-old pgindent run. Same 4-space tabs.
2000-04-12 19:17:23 +02:00
extern int tm2timestamp(struct tm * tm, double fsec, int *tzp, Timestamp *dt);
pgindent run. Make it all clean.
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extern int timestamp2tm(Timestamp dt, int *tzp, struct tm * tm,
double *fsec, char **tzn);
Implement "date/time grand unification". Transform datetime and timespan into timestamp and interval. Deprecate datetime and timespan, though translate to new types in gram.y. Transform all datetime and timespan catalog entries into new types. Make "INTERVAL" reserved word allowed as a column identifier in gram.y. Remove dt.h, dt.c files, and retarget datetime.h, datetime.c as utility routines for all date/time types. date.{h,c} now deals with date, time types. timestamp.{h,c} now deals with timestamp, interval types. nabstime.{h,c} now deals with abstime, reltime, tinterval types. Make NUMERIC a known native type for purposes of type coersion. Not tested.
2000-02-16 18:26:26 +01:00
extern Timestamp SetTimestamp(Timestamp timestamp);
pgindent run. Make it all clean.
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extern void isoweek2date(int woy, int *year, int *mon, int *mday);
* to_char: - full support for IW (ISO week) and vice versa conversion for IW too (the to_char 'week' support is now complete and I hope correct). Thomas, I use for IW code from timestamp.c, for this I create separate function date2isoweek() from original 'case DTK_WEEK:' code in the timestamp_part(). I mean will better use one code for same feature in date_part() and in to_char(). The isoweek2date() is added to timestamp.c too. Right? IMHO in 7.1 will all to_char's features complete. It is cca 41 templates for date/time and cca 21 for numbers. * to_ascii: - gcc, is it correct now? :-) In the patch is documentation for to_char's IW and for to_ascii(). Karel
2000-08-29 06:41:48 +02:00
extern int date2isoweek(int year, int mon, int mday);
Implement "date/time grand unification". Transform datetime and timespan into timestamp and interval. Deprecate datetime and timespan, though translate to new types in gram.y. Transform all datetime and timespan catalog entries into new types. Make "INTERVAL" reserved word allowed as a column identifier in gram.y. Remove dt.h, dt.c files, and retarget datetime.h, datetime.c as utility routines for all date/time types. date.{h,c} now deals with date, time types. timestamp.{h,c} now deals with timestamp, interval types. nabstime.{h,c} now deals with abstime, reltime, tinterval types. Make NUMERIC a known native type for purposes of type coersion. Not tested.
2000-02-16 18:26:26 +01:00
#endif /* TIMESTAMP_H */