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3e1beda2cd
time zones. SQL99 spec requires a default of zero (round to seconds) which is set in gram.y as typmod is set in the parse tree. We *could* change to a default of either 6 (for internal compatibility with previous versions) or 2 (for external compatibility with previous versions). Evaluate entries in pg_proc wrt the iscachable attribute for timestamp and other date/time types. Try to recognize cases where side effects like the current time zone setting may have an effect on results to decide whether something is cachable or not.
127 lines
4.5 KiB
C
127 lines
4.5 KiB
C
/*-------------------------------------------------------------------------
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*
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* date.h
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* Definitions for the SQL92 "date" and "time" types.
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*
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*
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* Portions Copyright (c) 1996-2001, PostgreSQL Global Development Group
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* Portions Copyright (c) 1994, Regents of the University of California
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*
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* $Id: date.h,v 1.13 2001/10/03 05:29:25 thomas Exp $
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*
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*-------------------------------------------------------------------------
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*/
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#ifndef DATE_H
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#define DATE_H
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#include "fmgr.h"
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typedef int32 DateADT;
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typedef float8 TimeADT;
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typedef struct
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{
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double time; /* all time units other than months and
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* years */
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int32 zone; /* numeric time zone, in seconds */
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} TimeTzADT;
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/*
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* Macros for fmgr-callable functions.
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*
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* For TimeADT, we make use of the same support routines as for float8.
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* Therefore TimeADT is pass-by-reference if and only if float8 is!
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*/
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#define DatumGetDateADT(X) ((DateADT) DatumGetInt32(X))
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#define DatumGetTimeADT(X) ((TimeADT) DatumGetFloat8(X))
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#define DatumGetTimeTzADTP(X) ((TimeTzADT *) DatumGetPointer(X))
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#define DateADTGetDatum(X) Int32GetDatum(X)
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#define TimeADTGetDatum(X) Float8GetDatum(X)
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#define TimeTzADTPGetDatum(X) PointerGetDatum(X)
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#define PG_GETARG_DATEADT(n) DatumGetDateADT(PG_GETARG_DATUM(n))
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#define PG_GETARG_TIMEADT(n) DatumGetTimeADT(PG_GETARG_DATUM(n))
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#define PG_GETARG_TIMETZADT_P(n) DatumGetTimeTzADTP(PG_GETARG_DATUM(n))
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#define PG_RETURN_DATEADT(x) return DateADTGetDatum(x)
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#define PG_RETURN_TIMEADT(x) return TimeADTGetDatum(x)
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#define PG_RETURN_TIMETZADT_P(x) return TimeTzADTPGetDatum(x)
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/* date.c */
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extern Datum date_in(PG_FUNCTION_ARGS);
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extern Datum date_out(PG_FUNCTION_ARGS);
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extern Datum date_eq(PG_FUNCTION_ARGS);
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extern Datum date_ne(PG_FUNCTION_ARGS);
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extern Datum date_lt(PG_FUNCTION_ARGS);
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extern Datum date_le(PG_FUNCTION_ARGS);
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extern Datum date_gt(PG_FUNCTION_ARGS);
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extern Datum date_ge(PG_FUNCTION_ARGS);
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extern Datum date_cmp(PG_FUNCTION_ARGS);
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extern Datum date_larger(PG_FUNCTION_ARGS);
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extern Datum date_smaller(PG_FUNCTION_ARGS);
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extern Datum date_mi(PG_FUNCTION_ARGS);
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extern Datum date_pli(PG_FUNCTION_ARGS);
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extern Datum date_mii(PG_FUNCTION_ARGS);
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extern Datum date_timestamp(PG_FUNCTION_ARGS);
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extern Datum timestamp_date(PG_FUNCTION_ARGS);
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extern Datum date_timestamptz(PG_FUNCTION_ARGS);
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extern Datum timestamptz_date(PG_FUNCTION_ARGS);
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extern Datum datetime_timestamp(PG_FUNCTION_ARGS);
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extern Datum abstime_date(PG_FUNCTION_ARGS);
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extern Datum text_date(PG_FUNCTION_ARGS);
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extern Datum date_text(PG_FUNCTION_ARGS);
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extern Datum time_in(PG_FUNCTION_ARGS);
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extern Datum time_out(PG_FUNCTION_ARGS);
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extern Datum time_scale(PG_FUNCTION_ARGS);
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extern Datum time_eq(PG_FUNCTION_ARGS);
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extern Datum time_ne(PG_FUNCTION_ARGS);
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extern Datum time_lt(PG_FUNCTION_ARGS);
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extern Datum time_le(PG_FUNCTION_ARGS);
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extern Datum time_gt(PG_FUNCTION_ARGS);
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extern Datum time_ge(PG_FUNCTION_ARGS);
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extern Datum time_cmp(PG_FUNCTION_ARGS);
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extern Datum overlaps_time(PG_FUNCTION_ARGS);
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extern Datum time_larger(PG_FUNCTION_ARGS);
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extern Datum time_smaller(PG_FUNCTION_ARGS);
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extern Datum time_mi_time(PG_FUNCTION_ARGS);
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extern Datum timestamp_time(PG_FUNCTION_ARGS);
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extern Datum time_interval(PG_FUNCTION_ARGS);
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extern Datum interval_time(PG_FUNCTION_ARGS);
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extern Datum text_time(PG_FUNCTION_ARGS);
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extern Datum time_text(PG_FUNCTION_ARGS);
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extern Datum time_pl_interval(PG_FUNCTION_ARGS);
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extern Datum time_mi_interval(PG_FUNCTION_ARGS);
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extern Datum interval_pl_time(PG_FUNCTION_ARGS);
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extern Datum timetz_in(PG_FUNCTION_ARGS);
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extern Datum timetz_out(PG_FUNCTION_ARGS);
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extern Datum timetz_scale(PG_FUNCTION_ARGS);
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extern Datum timetz_eq(PG_FUNCTION_ARGS);
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extern Datum timetz_ne(PG_FUNCTION_ARGS);
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extern Datum timetz_lt(PG_FUNCTION_ARGS);
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extern Datum timetz_le(PG_FUNCTION_ARGS);
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extern Datum timetz_gt(PG_FUNCTION_ARGS);
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extern Datum timetz_ge(PG_FUNCTION_ARGS);
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extern Datum timetz_cmp(PG_FUNCTION_ARGS);
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extern Datum timetz_hash(PG_FUNCTION_ARGS);
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extern Datum overlaps_timetz(PG_FUNCTION_ARGS);
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extern Datum timetz_larger(PG_FUNCTION_ARGS);
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extern Datum timetz_smaller(PG_FUNCTION_ARGS);
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extern Datum timetz_time(PG_FUNCTION_ARGS);
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extern Datum time_timetz(PG_FUNCTION_ARGS);
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extern Datum timestamptz_timetz(PG_FUNCTION_ARGS);
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extern Datum datetimetz_timestamptz(PG_FUNCTION_ARGS);
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extern Datum text_timetz(PG_FUNCTION_ARGS);
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extern Datum timetz_text(PG_FUNCTION_ARGS);
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extern Datum timetz_zone(PG_FUNCTION_ARGS);
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extern Datum timetz_izone(PG_FUNCTION_ARGS);
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extern Datum timetz_pl_interval(PG_FUNCTION_ARGS);
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extern Datum timetz_mi_interval(PG_FUNCTION_ARGS);
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#endif /* DATE_H */
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