2932 lines
63 KiB
C
2932 lines
63 KiB
C
/*-------------------------------------------------------------------------
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*
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* date.c
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* implements DATE and TIME data types specified in SQL standard
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*
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* Portions Copyright (c) 1996-2020, PostgreSQL Global Development Group
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* Portions Copyright (c) 1994-5, Regents of the University of California
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*
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*
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* IDENTIFICATION
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* src/backend/utils/adt/date.c
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*
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*-------------------------------------------------------------------------
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*/
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#include "postgres.h"
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#include <ctype.h>
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#include <limits.h>
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#include <float.h>
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#include <math.h>
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#include <time.h>
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#include "access/xact.h"
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#include "common/hashfn.h"
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#include "libpq/pqformat.h"
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#include "miscadmin.h"
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#include "nodes/supportnodes.h"
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#include "parser/scansup.h"
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#include "utils/array.h"
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#include "utils/builtins.h"
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#include "utils/date.h"
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#include "utils/datetime.h"
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#include "utils/sortsupport.h"
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/*
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* gcc's -ffast-math switch breaks routines that expect exact results from
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* expressions like timeval / SECS_PER_HOUR, where timeval is double.
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*/
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#ifdef __FAST_MATH__
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#error -ffast-math is known to break this code
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#endif
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/* common code for timetypmodin and timetztypmodin */
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static int32
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anytime_typmodin(bool istz, ArrayType *ta)
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{
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int32 *tl;
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int n;
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tl = ArrayGetIntegerTypmods(ta, &n);
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/*
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* we're not too tense about good error message here because grammar
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* shouldn't allow wrong number of modifiers for TIME
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*/
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if (n != 1)
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ereport(ERROR,
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(errcode(ERRCODE_INVALID_PARAMETER_VALUE),
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errmsg("invalid type modifier")));
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return anytime_typmod_check(istz, tl[0]);
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}
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/* exported so parse_expr.c can use it */
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int32
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anytime_typmod_check(bool istz, int32 typmod)
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{
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if (typmod < 0)
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ereport(ERROR,
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(errcode(ERRCODE_INVALID_PARAMETER_VALUE),
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errmsg("TIME(%d)%s precision must not be negative",
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typmod, (istz ? " WITH TIME ZONE" : ""))));
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if (typmod > MAX_TIME_PRECISION)
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{
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ereport(WARNING,
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(errcode(ERRCODE_INVALID_PARAMETER_VALUE),
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errmsg("TIME(%d)%s precision reduced to maximum allowed, %d",
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typmod, (istz ? " WITH TIME ZONE" : ""),
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MAX_TIME_PRECISION)));
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typmod = MAX_TIME_PRECISION;
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}
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return typmod;
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}
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/* common code for timetypmodout and timetztypmodout */
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static char *
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anytime_typmodout(bool istz, int32 typmod)
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{
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const char *tz = istz ? " with time zone" : " without time zone";
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if (typmod >= 0)
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return psprintf("(%d)%s", (int) typmod, tz);
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else
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return psprintf("%s", tz);
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}
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/*****************************************************************************
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* Date ADT
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*****************************************************************************/
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/* date_in()
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* Given date text string, convert to internal date format.
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*/
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Datum
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date_in(PG_FUNCTION_ARGS)
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{
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char *str = PG_GETARG_CSTRING(0);
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DateADT date;
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fsec_t fsec;
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struct pg_tm tt,
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*tm = &tt;
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int tzp;
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int dtype;
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int nf;
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int dterr;
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char *field[MAXDATEFIELDS];
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int ftype[MAXDATEFIELDS];
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char workbuf[MAXDATELEN + 1];
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dterr = ParseDateTime(str, workbuf, sizeof(workbuf),
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field, ftype, MAXDATEFIELDS, &nf);
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if (dterr == 0)
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dterr = DecodeDateTime(field, ftype, nf, &dtype, tm, &fsec, &tzp);
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if (dterr != 0)
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DateTimeParseError(dterr, str, "date");
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switch (dtype)
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{
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case DTK_DATE:
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break;
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case DTK_EPOCH:
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GetEpochTime(tm);
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break;
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case DTK_LATE:
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DATE_NOEND(date);
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PG_RETURN_DATEADT(date);
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case DTK_EARLY:
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DATE_NOBEGIN(date);
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PG_RETURN_DATEADT(date);
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default:
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DateTimeParseError(DTERR_BAD_FORMAT, str, "date");
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break;
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}
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/* Prevent overflow in Julian-day routines */
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if (!IS_VALID_JULIAN(tm->tm_year, tm->tm_mon, tm->tm_mday))
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ereport(ERROR,
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(errcode(ERRCODE_DATETIME_VALUE_OUT_OF_RANGE),
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errmsg("date out of range: \"%s\"", str)));
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date = date2j(tm->tm_year, tm->tm_mon, tm->tm_mday) - POSTGRES_EPOCH_JDATE;
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/* Now check for just-out-of-range dates */
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if (!IS_VALID_DATE(date))
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ereport(ERROR,
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(errcode(ERRCODE_DATETIME_VALUE_OUT_OF_RANGE),
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errmsg("date out of range: \"%s\"", str)));
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PG_RETURN_DATEADT(date);
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}
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/* date_out()
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* Given internal format date, convert to text string.
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*/
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Datum
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date_out(PG_FUNCTION_ARGS)
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{
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DateADT date = PG_GETARG_DATEADT(0);
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char *result;
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struct pg_tm tt,
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*tm = &tt;
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char buf[MAXDATELEN + 1];
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if (DATE_NOT_FINITE(date))
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EncodeSpecialDate(date, buf);
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else
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{
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j2date(date + POSTGRES_EPOCH_JDATE,
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&(tm->tm_year), &(tm->tm_mon), &(tm->tm_mday));
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EncodeDateOnly(tm, DateStyle, buf);
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}
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result = pstrdup(buf);
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PG_RETURN_CSTRING(result);
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}
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/*
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* date_recv - converts external binary format to date
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*/
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Datum
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date_recv(PG_FUNCTION_ARGS)
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{
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StringInfo buf = (StringInfo) PG_GETARG_POINTER(0);
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DateADT result;
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result = (DateADT) pq_getmsgint(buf, sizeof(DateADT));
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/* Limit to the same range that date_in() accepts. */
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if (DATE_NOT_FINITE(result))
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/* ok */ ;
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else if (!IS_VALID_DATE(result))
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ereport(ERROR,
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(errcode(ERRCODE_DATETIME_VALUE_OUT_OF_RANGE),
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errmsg("date out of range")));
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PG_RETURN_DATEADT(result);
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}
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/*
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* date_send - converts date to binary format
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*/
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Datum
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date_send(PG_FUNCTION_ARGS)
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{
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DateADT date = PG_GETARG_DATEADT(0);
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StringInfoData buf;
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pq_begintypsend(&buf);
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pq_sendint32(&buf, date);
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PG_RETURN_BYTEA_P(pq_endtypsend(&buf));
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}
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/*
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* make_date - date constructor
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*/
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Datum
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make_date(PG_FUNCTION_ARGS)
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{
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struct pg_tm tm;
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DateADT date;
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int dterr;
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bool bc = false;
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tm.tm_year = PG_GETARG_INT32(0);
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tm.tm_mon = PG_GETARG_INT32(1);
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tm.tm_mday = PG_GETARG_INT32(2);
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/* Handle negative years as BC */
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if (tm.tm_year < 0)
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{
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bc = true;
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tm.tm_year = -tm.tm_year;
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}
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dterr = ValidateDate(DTK_DATE_M, false, false, bc, &tm);
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if (dterr != 0)
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ereport(ERROR,
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(errcode(ERRCODE_DATETIME_FIELD_OVERFLOW),
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errmsg("date field value out of range: %d-%02d-%02d",
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tm.tm_year, tm.tm_mon, tm.tm_mday)));
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/* Prevent overflow in Julian-day routines */
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if (!IS_VALID_JULIAN(tm.tm_year, tm.tm_mon, tm.tm_mday))
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ereport(ERROR,
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(errcode(ERRCODE_DATETIME_VALUE_OUT_OF_RANGE),
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errmsg("date out of range: %d-%02d-%02d",
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tm.tm_year, tm.tm_mon, tm.tm_mday)));
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date = date2j(tm.tm_year, tm.tm_mon, tm.tm_mday) - POSTGRES_EPOCH_JDATE;
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/* Now check for just-out-of-range dates */
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if (!IS_VALID_DATE(date))
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ereport(ERROR,
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(errcode(ERRCODE_DATETIME_VALUE_OUT_OF_RANGE),
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errmsg("date out of range: %d-%02d-%02d",
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tm.tm_year, tm.tm_mon, tm.tm_mday)));
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PG_RETURN_DATEADT(date);
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}
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/*
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* Convert reserved date values to string.
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*/
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void
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EncodeSpecialDate(DateADT dt, char *str)
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{
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if (DATE_IS_NOBEGIN(dt))
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strcpy(str, EARLY);
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else if (DATE_IS_NOEND(dt))
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strcpy(str, LATE);
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else /* shouldn't happen */
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elog(ERROR, "invalid argument for EncodeSpecialDate");
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}
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/*
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* GetSQLCurrentDate -- implements CURRENT_DATE
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*/
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DateADT
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GetSQLCurrentDate(void)
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{
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TimestampTz ts;
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struct pg_tm tt,
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*tm = &tt;
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fsec_t fsec;
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int tz;
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ts = GetCurrentTransactionStartTimestamp();
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if (timestamp2tm(ts, &tz, tm, &fsec, NULL, NULL) != 0)
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ereport(ERROR,
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(errcode(ERRCODE_DATETIME_VALUE_OUT_OF_RANGE),
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errmsg("timestamp out of range")));
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return date2j(tm->tm_year, tm->tm_mon, tm->tm_mday) - POSTGRES_EPOCH_JDATE;
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}
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/*
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* GetSQLCurrentTime -- implements CURRENT_TIME, CURRENT_TIME(n)
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*/
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TimeTzADT *
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GetSQLCurrentTime(int32 typmod)
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{
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TimeTzADT *result;
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TimestampTz ts;
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struct pg_tm tt,
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*tm = &tt;
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fsec_t fsec;
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int tz;
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ts = GetCurrentTransactionStartTimestamp();
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if (timestamp2tm(ts, &tz, tm, &fsec, NULL, NULL) != 0)
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ereport(ERROR,
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(errcode(ERRCODE_DATETIME_VALUE_OUT_OF_RANGE),
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errmsg("timestamp out of range")));
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result = (TimeTzADT *) palloc(sizeof(TimeTzADT));
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tm2timetz(tm, fsec, tz, result);
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AdjustTimeForTypmod(&(result->time), typmod);
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return result;
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}
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/*
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* GetSQLLocalTime -- implements LOCALTIME, LOCALTIME(n)
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*/
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TimeADT
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GetSQLLocalTime(int32 typmod)
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{
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TimeADT result;
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TimestampTz ts;
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struct pg_tm tt,
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*tm = &tt;
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fsec_t fsec;
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int tz;
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ts = GetCurrentTransactionStartTimestamp();
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if (timestamp2tm(ts, &tz, tm, &fsec, NULL, NULL) != 0)
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ereport(ERROR,
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(errcode(ERRCODE_DATETIME_VALUE_OUT_OF_RANGE),
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errmsg("timestamp out of range")));
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tm2time(tm, fsec, &result);
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AdjustTimeForTypmod(&result, typmod);
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return result;
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}
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/*
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* Comparison functions for dates
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*/
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Datum
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date_eq(PG_FUNCTION_ARGS)
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{
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DateADT dateVal1 = PG_GETARG_DATEADT(0);
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DateADT dateVal2 = PG_GETARG_DATEADT(1);
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PG_RETURN_BOOL(dateVal1 == dateVal2);
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}
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Datum
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date_ne(PG_FUNCTION_ARGS)
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{
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DateADT dateVal1 = PG_GETARG_DATEADT(0);
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DateADT dateVal2 = PG_GETARG_DATEADT(1);
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PG_RETURN_BOOL(dateVal1 != dateVal2);
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}
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Datum
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date_lt(PG_FUNCTION_ARGS)
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{
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DateADT dateVal1 = PG_GETARG_DATEADT(0);
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DateADT dateVal2 = PG_GETARG_DATEADT(1);
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PG_RETURN_BOOL(dateVal1 < dateVal2);
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}
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Datum
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date_le(PG_FUNCTION_ARGS)
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{
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DateADT dateVal1 = PG_GETARG_DATEADT(0);
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DateADT dateVal2 = PG_GETARG_DATEADT(1);
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PG_RETURN_BOOL(dateVal1 <= dateVal2);
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}
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Datum
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date_gt(PG_FUNCTION_ARGS)
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{
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DateADT dateVal1 = PG_GETARG_DATEADT(0);
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DateADT dateVal2 = PG_GETARG_DATEADT(1);
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PG_RETURN_BOOL(dateVal1 > dateVal2);
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}
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Datum
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date_ge(PG_FUNCTION_ARGS)
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{
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DateADT dateVal1 = PG_GETARG_DATEADT(0);
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DateADT dateVal2 = PG_GETARG_DATEADT(1);
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PG_RETURN_BOOL(dateVal1 >= dateVal2);
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}
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Datum
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date_cmp(PG_FUNCTION_ARGS)
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{
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DateADT dateVal1 = PG_GETARG_DATEADT(0);
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DateADT dateVal2 = PG_GETARG_DATEADT(1);
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if (dateVal1 < dateVal2)
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PG_RETURN_INT32(-1);
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else if (dateVal1 > dateVal2)
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PG_RETURN_INT32(1);
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PG_RETURN_INT32(0);
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}
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static int
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date_fastcmp(Datum x, Datum y, SortSupport ssup)
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{
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DateADT a = DatumGetDateADT(x);
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DateADT b = DatumGetDateADT(y);
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if (a < b)
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return -1;
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else if (a > b)
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return 1;
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return 0;
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}
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Datum
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date_sortsupport(PG_FUNCTION_ARGS)
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{
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SortSupport ssup = (SortSupport) PG_GETARG_POINTER(0);
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ssup->comparator = date_fastcmp;
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PG_RETURN_VOID();
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}
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Datum
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date_finite(PG_FUNCTION_ARGS)
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{
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DateADT date = PG_GETARG_DATEADT(0);
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PG_RETURN_BOOL(!DATE_NOT_FINITE(date));
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}
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Datum
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date_larger(PG_FUNCTION_ARGS)
|
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{
|
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DateADT dateVal1 = PG_GETARG_DATEADT(0);
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DateADT dateVal2 = PG_GETARG_DATEADT(1);
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|
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PG_RETURN_DATEADT((dateVal1 > dateVal2) ? dateVal1 : dateVal2);
|
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}
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Datum
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date_smaller(PG_FUNCTION_ARGS)
|
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{
|
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DateADT dateVal1 = PG_GETARG_DATEADT(0);
|
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DateADT dateVal2 = PG_GETARG_DATEADT(1);
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|
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PG_RETURN_DATEADT((dateVal1 < dateVal2) ? dateVal1 : dateVal2);
|
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}
|
|
|
|
/* Compute difference between two dates in days.
|
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*/
|
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Datum
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date_mi(PG_FUNCTION_ARGS)
|
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{
|
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DateADT dateVal1 = PG_GETARG_DATEADT(0);
|
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DateADT dateVal2 = PG_GETARG_DATEADT(1);
|
|
|
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if (DATE_NOT_FINITE(dateVal1) || DATE_NOT_FINITE(dateVal2))
|
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ereport(ERROR,
|
|
(errcode(ERRCODE_DATETIME_VALUE_OUT_OF_RANGE),
|
|
errmsg("cannot subtract infinite dates")));
|
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|
|
PG_RETURN_INT32((int32) (dateVal1 - dateVal2));
|
|
}
|
|
|
|
/* Add a number of days to a date, giving a new date.
|
|
* Must handle both positive and negative numbers of days.
|
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*/
|
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Datum
|
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date_pli(PG_FUNCTION_ARGS)
|
|
{
|
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DateADT dateVal = PG_GETARG_DATEADT(0);
|
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int32 days = PG_GETARG_INT32(1);
|
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DateADT result;
|
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|
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if (DATE_NOT_FINITE(dateVal))
|
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PG_RETURN_DATEADT(dateVal); /* can't change infinity */
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|
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result = dateVal + days;
|
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|
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/* Check for integer overflow and out-of-allowed-range */
|
|
if ((days >= 0 ? (result < dateVal) : (result > dateVal)) ||
|
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!IS_VALID_DATE(result))
|
|
ereport(ERROR,
|
|
(errcode(ERRCODE_DATETIME_VALUE_OUT_OF_RANGE),
|
|
errmsg("date out of range")));
|
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|
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PG_RETURN_DATEADT(result);
|
|
}
|
|
|
|
/* Subtract a number of days from a date, giving a new date.
|
|
*/
|
|
Datum
|
|
date_mii(PG_FUNCTION_ARGS)
|
|
{
|
|
DateADT dateVal = PG_GETARG_DATEADT(0);
|
|
int32 days = PG_GETARG_INT32(1);
|
|
DateADT result;
|
|
|
|
if (DATE_NOT_FINITE(dateVal))
|
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PG_RETURN_DATEADT(dateVal); /* can't change infinity */
|
|
|
|
result = dateVal - days;
|
|
|
|
/* Check for integer overflow and out-of-allowed-range */
|
|
if ((days >= 0 ? (result > dateVal) : (result < dateVal)) ||
|
|
!IS_VALID_DATE(result))
|
|
ereport(ERROR,
|
|
(errcode(ERRCODE_DATETIME_VALUE_OUT_OF_RANGE),
|
|
errmsg("date out of range")));
|
|
|
|
PG_RETURN_DATEADT(result);
|
|
}
|
|
|
|
|
|
/*
|
|
* Promote date to timestamp.
|
|
*
|
|
* On overflow error is thrown if 'overflow' is NULL. Otherwise, '*overflow'
|
|
* is set to -1 (+1) when result value exceed lower (upper) boundary and zero
|
|
* returned.
|
|
*/
|
|
Timestamp
|
|
date2timestamp_opt_overflow(DateADT dateVal, int *overflow)
|
|
{
|
|
Timestamp result;
|
|
|
|
if (DATE_IS_NOBEGIN(dateVal))
|
|
TIMESTAMP_NOBEGIN(result);
|
|
else if (DATE_IS_NOEND(dateVal))
|
|
TIMESTAMP_NOEND(result);
|
|
else
|
|
{
|
|
/*
|
|
* Date's range is wider than timestamp's, so check for boundaries.
|
|
* Since dates have the same minimum values as timestamps, only upper
|
|
* boundary need be checked for overflow.
|
|
*/
|
|
if (dateVal >= (TIMESTAMP_END_JULIAN - POSTGRES_EPOCH_JDATE))
|
|
{
|
|
if (overflow)
|
|
{
|
|
*overflow = 1;
|
|
return (Timestamp) 0;
|
|
}
|
|
else
|
|
{
|
|
ereport(ERROR,
|
|
(errcode(ERRCODE_DATETIME_VALUE_OUT_OF_RANGE),
|
|
errmsg("date out of range for timestamp")));
|
|
}
|
|
}
|
|
|
|
/* date is days since 2000, timestamp is microseconds since same... */
|
|
result = dateVal * USECS_PER_DAY;
|
|
}
|
|
|
|
return result;
|
|
}
|
|
|
|
/*
|
|
* Single-argument version of date2timestamp_opt_overflow().
|
|
*/
|
|
static TimestampTz
|
|
date2timestamp(DateADT dateVal)
|
|
{
|
|
return date2timestamp_opt_overflow(dateVal, NULL);
|
|
}
|
|
|
|
/*
|
|
* Promote date to timestamp with time zone.
|
|
*
|
|
* On overflow error is thrown if 'overflow' is NULL. Otherwise, '*overflow'
|
|
* is set to -1 (+1) when result value exceed lower (upper) boundary and zero
|
|
* returned.
|
|
*/
|
|
TimestampTz
|
|
date2timestamptz_opt_overflow(DateADT dateVal, int *overflow)
|
|
{
|
|
TimestampTz result;
|
|
struct pg_tm tt,
|
|
*tm = &tt;
|
|
int tz;
|
|
|
|
if (DATE_IS_NOBEGIN(dateVal))
|
|
TIMESTAMP_NOBEGIN(result);
|
|
else if (DATE_IS_NOEND(dateVal))
|
|
TIMESTAMP_NOEND(result);
|
|
else
|
|
{
|
|
/*
|
|
* Date's range is wider than timestamp's, so check for boundaries.
|
|
* Since dates have the same minimum values as timestamps, only upper
|
|
* boundary need be checked for overflow.
|
|
*/
|
|
if (dateVal >= (TIMESTAMP_END_JULIAN - POSTGRES_EPOCH_JDATE))
|
|
{
|
|
if (overflow)
|
|
{
|
|
*overflow = 1;
|
|
return (TimestampTz) 0;
|
|
}
|
|
else
|
|
{
|
|
ereport(ERROR,
|
|
(errcode(ERRCODE_DATETIME_VALUE_OUT_OF_RANGE),
|
|
errmsg("date out of range for timestamp")));
|
|
}
|
|
}
|
|
|
|
j2date(dateVal + POSTGRES_EPOCH_JDATE,
|
|
&(tm->tm_year), &(tm->tm_mon), &(tm->tm_mday));
|
|
tm->tm_hour = 0;
|
|
tm->tm_min = 0;
|
|
tm->tm_sec = 0;
|
|
tz = DetermineTimeZoneOffset(tm, session_timezone);
|
|
|
|
result = dateVal * USECS_PER_DAY + tz * USECS_PER_SEC;
|
|
|
|
/*
|
|
* Since it is possible to go beyond allowed timestamptz range because
|
|
* of time zone, check for allowed timestamp range after adding tz.
|
|
*/
|
|
if (!IS_VALID_TIMESTAMP(result))
|
|
{
|
|
if (overflow)
|
|
{
|
|
if (result < MIN_TIMESTAMP)
|
|
*overflow = -1;
|
|
else
|
|
{
|
|
Assert(result >= END_TIMESTAMP);
|
|
*overflow = 1;
|
|
}
|
|
return (TimestampTz) 0;
|
|
}
|
|
else
|
|
{
|
|
ereport(ERROR,
|
|
(errcode(ERRCODE_DATETIME_VALUE_OUT_OF_RANGE),
|
|
errmsg("date out of range for timestamp")));
|
|
}
|
|
}
|
|
}
|
|
|
|
return result;
|
|
}
|
|
|
|
/*
|
|
* Single-argument version of date2timestamptz_opt_overflow().
|
|
*/
|
|
static TimestampTz
|
|
date2timestamptz(DateADT dateVal)
|
|
{
|
|
return date2timestamptz_opt_overflow(dateVal, NULL);
|
|
}
|
|
|
|
/*
|
|
* date2timestamp_no_overflow
|
|
*
|
|
* This is chartered to produce a double value that is numerically
|
|
* equivalent to the corresponding Timestamp value, if the date is in the
|
|
* valid range of Timestamps, but in any case not throw an overflow error.
|
|
* We can do this since the numerical range of double is greater than
|
|
* that of non-erroneous timestamps. The results are currently only
|
|
* used for statistical estimation purposes.
|
|
*/
|
|
double
|
|
date2timestamp_no_overflow(DateADT dateVal)
|
|
{
|
|
double result;
|
|
|
|
if (DATE_IS_NOBEGIN(dateVal))
|
|
result = -DBL_MAX;
|
|
else if (DATE_IS_NOEND(dateVal))
|
|
result = DBL_MAX;
|
|
else
|
|
{
|
|
/* date is days since 2000, timestamp is microseconds since same... */
|
|
result = dateVal * (double) USECS_PER_DAY;
|
|
}
|
|
|
|
return result;
|
|
}
|
|
|
|
|
|
/*
|
|
* Crosstype comparison functions for dates
|
|
*/
|
|
|
|
Datum
|
|
date_eq_timestamp(PG_FUNCTION_ARGS)
|
|
{
|
|
DateADT dateVal = PG_GETARG_DATEADT(0);
|
|
Timestamp dt2 = PG_GETARG_TIMESTAMP(1);
|
|
Timestamp dt1;
|
|
|
|
dt1 = date2timestamp(dateVal);
|
|
|
|
PG_RETURN_BOOL(timestamp_cmp_internal(dt1, dt2) == 0);
|
|
}
|
|
|
|
Datum
|
|
date_ne_timestamp(PG_FUNCTION_ARGS)
|
|
{
|
|
DateADT dateVal = PG_GETARG_DATEADT(0);
|
|
Timestamp dt2 = PG_GETARG_TIMESTAMP(1);
|
|
Timestamp dt1;
|
|
|
|
dt1 = date2timestamp(dateVal);
|
|
|
|
PG_RETURN_BOOL(timestamp_cmp_internal(dt1, dt2) != 0);
|
|
}
|
|
|
|
Datum
|
|
date_lt_timestamp(PG_FUNCTION_ARGS)
|
|
{
|
|
DateADT dateVal = PG_GETARG_DATEADT(0);
|
|
Timestamp dt2 = PG_GETARG_TIMESTAMP(1);
|
|
Timestamp dt1;
|
|
|
|
dt1 = date2timestamp(dateVal);
|
|
|
|
PG_RETURN_BOOL(timestamp_cmp_internal(dt1, dt2) < 0);
|
|
}
|
|
|
|
Datum
|
|
date_gt_timestamp(PG_FUNCTION_ARGS)
|
|
{
|
|
DateADT dateVal = PG_GETARG_DATEADT(0);
|
|
Timestamp dt2 = PG_GETARG_TIMESTAMP(1);
|
|
Timestamp dt1;
|
|
|
|
dt1 = date2timestamp(dateVal);
|
|
|
|
PG_RETURN_BOOL(timestamp_cmp_internal(dt1, dt2) > 0);
|
|
}
|
|
|
|
Datum
|
|
date_le_timestamp(PG_FUNCTION_ARGS)
|
|
{
|
|
DateADT dateVal = PG_GETARG_DATEADT(0);
|
|
Timestamp dt2 = PG_GETARG_TIMESTAMP(1);
|
|
Timestamp dt1;
|
|
|
|
dt1 = date2timestamp(dateVal);
|
|
|
|
PG_RETURN_BOOL(timestamp_cmp_internal(dt1, dt2) <= 0);
|
|
}
|
|
|
|
Datum
|
|
date_ge_timestamp(PG_FUNCTION_ARGS)
|
|
{
|
|
DateADT dateVal = PG_GETARG_DATEADT(0);
|
|
Timestamp dt2 = PG_GETARG_TIMESTAMP(1);
|
|
Timestamp dt1;
|
|
|
|
dt1 = date2timestamp(dateVal);
|
|
|
|
PG_RETURN_BOOL(timestamp_cmp_internal(dt1, dt2) >= 0);
|
|
}
|
|
|
|
Datum
|
|
date_cmp_timestamp(PG_FUNCTION_ARGS)
|
|
{
|
|
DateADT dateVal = PG_GETARG_DATEADT(0);
|
|
Timestamp dt2 = PG_GETARG_TIMESTAMP(1);
|
|
Timestamp dt1;
|
|
|
|
dt1 = date2timestamp(dateVal);
|
|
|
|
PG_RETURN_INT32(timestamp_cmp_internal(dt1, dt2));
|
|
}
|
|
|
|
Datum
|
|
date_eq_timestamptz(PG_FUNCTION_ARGS)
|
|
{
|
|
DateADT dateVal = PG_GETARG_DATEADT(0);
|
|
TimestampTz dt2 = PG_GETARG_TIMESTAMPTZ(1);
|
|
TimestampTz dt1;
|
|
|
|
dt1 = date2timestamptz(dateVal);
|
|
|
|
PG_RETURN_BOOL(timestamptz_cmp_internal(dt1, dt2) == 0);
|
|
}
|
|
|
|
Datum
|
|
date_ne_timestamptz(PG_FUNCTION_ARGS)
|
|
{
|
|
DateADT dateVal = PG_GETARG_DATEADT(0);
|
|
TimestampTz dt2 = PG_GETARG_TIMESTAMPTZ(1);
|
|
TimestampTz dt1;
|
|
|
|
dt1 = date2timestamptz(dateVal);
|
|
|
|
PG_RETURN_BOOL(timestamptz_cmp_internal(dt1, dt2) != 0);
|
|
}
|
|
|
|
Datum
|
|
date_lt_timestamptz(PG_FUNCTION_ARGS)
|
|
{
|
|
DateADT dateVal = PG_GETARG_DATEADT(0);
|
|
TimestampTz dt2 = PG_GETARG_TIMESTAMPTZ(1);
|
|
TimestampTz dt1;
|
|
|
|
dt1 = date2timestamptz(dateVal);
|
|
|
|
PG_RETURN_BOOL(timestamptz_cmp_internal(dt1, dt2) < 0);
|
|
}
|
|
|
|
Datum
|
|
date_gt_timestamptz(PG_FUNCTION_ARGS)
|
|
{
|
|
DateADT dateVal = PG_GETARG_DATEADT(0);
|
|
TimestampTz dt2 = PG_GETARG_TIMESTAMPTZ(1);
|
|
TimestampTz dt1;
|
|
|
|
dt1 = date2timestamptz(dateVal);
|
|
|
|
PG_RETURN_BOOL(timestamptz_cmp_internal(dt1, dt2) > 0);
|
|
}
|
|
|
|
Datum
|
|
date_le_timestamptz(PG_FUNCTION_ARGS)
|
|
{
|
|
DateADT dateVal = PG_GETARG_DATEADT(0);
|
|
TimestampTz dt2 = PG_GETARG_TIMESTAMPTZ(1);
|
|
TimestampTz dt1;
|
|
|
|
dt1 = date2timestamptz(dateVal);
|
|
|
|
PG_RETURN_BOOL(timestamptz_cmp_internal(dt1, dt2) <= 0);
|
|
}
|
|
|
|
Datum
|
|
date_ge_timestamptz(PG_FUNCTION_ARGS)
|
|
{
|
|
DateADT dateVal = PG_GETARG_DATEADT(0);
|
|
TimestampTz dt2 = PG_GETARG_TIMESTAMPTZ(1);
|
|
TimestampTz dt1;
|
|
|
|
dt1 = date2timestamptz(dateVal);
|
|
|
|
PG_RETURN_BOOL(timestamptz_cmp_internal(dt1, dt2) >= 0);
|
|
}
|
|
|
|
Datum
|
|
date_cmp_timestamptz(PG_FUNCTION_ARGS)
|
|
{
|
|
DateADT dateVal = PG_GETARG_DATEADT(0);
|
|
TimestampTz dt2 = PG_GETARG_TIMESTAMPTZ(1);
|
|
TimestampTz dt1;
|
|
|
|
dt1 = date2timestamptz(dateVal);
|
|
|
|
PG_RETURN_INT32(timestamptz_cmp_internal(dt1, dt2));
|
|
}
|
|
|
|
Datum
|
|
timestamp_eq_date(PG_FUNCTION_ARGS)
|
|
{
|
|
Timestamp dt1 = PG_GETARG_TIMESTAMP(0);
|
|
DateADT dateVal = PG_GETARG_DATEADT(1);
|
|
Timestamp dt2;
|
|
|
|
dt2 = date2timestamp(dateVal);
|
|
|
|
PG_RETURN_BOOL(timestamp_cmp_internal(dt1, dt2) == 0);
|
|
}
|
|
|
|
Datum
|
|
timestamp_ne_date(PG_FUNCTION_ARGS)
|
|
{
|
|
Timestamp dt1 = PG_GETARG_TIMESTAMP(0);
|
|
DateADT dateVal = PG_GETARG_DATEADT(1);
|
|
Timestamp dt2;
|
|
|
|
dt2 = date2timestamp(dateVal);
|
|
|
|
PG_RETURN_BOOL(timestamp_cmp_internal(dt1, dt2) != 0);
|
|
}
|
|
|
|
Datum
|
|
timestamp_lt_date(PG_FUNCTION_ARGS)
|
|
{
|
|
Timestamp dt1 = PG_GETARG_TIMESTAMP(0);
|
|
DateADT dateVal = PG_GETARG_DATEADT(1);
|
|
Timestamp dt2;
|
|
|
|
dt2 = date2timestamp(dateVal);
|
|
|
|
PG_RETURN_BOOL(timestamp_cmp_internal(dt1, dt2) < 0);
|
|
}
|
|
|
|
Datum
|
|
timestamp_gt_date(PG_FUNCTION_ARGS)
|
|
{
|
|
Timestamp dt1 = PG_GETARG_TIMESTAMP(0);
|
|
DateADT dateVal = PG_GETARG_DATEADT(1);
|
|
Timestamp dt2;
|
|
|
|
dt2 = date2timestamp(dateVal);
|
|
|
|
PG_RETURN_BOOL(timestamp_cmp_internal(dt1, dt2) > 0);
|
|
}
|
|
|
|
Datum
|
|
timestamp_le_date(PG_FUNCTION_ARGS)
|
|
{
|
|
Timestamp dt1 = PG_GETARG_TIMESTAMP(0);
|
|
DateADT dateVal = PG_GETARG_DATEADT(1);
|
|
Timestamp dt2;
|
|
|
|
dt2 = date2timestamp(dateVal);
|
|
|
|
PG_RETURN_BOOL(timestamp_cmp_internal(dt1, dt2) <= 0);
|
|
}
|
|
|
|
Datum
|
|
timestamp_ge_date(PG_FUNCTION_ARGS)
|
|
{
|
|
Timestamp dt1 = PG_GETARG_TIMESTAMP(0);
|
|
DateADT dateVal = PG_GETARG_DATEADT(1);
|
|
Timestamp dt2;
|
|
|
|
dt2 = date2timestamp(dateVal);
|
|
|
|
PG_RETURN_BOOL(timestamp_cmp_internal(dt1, dt2) >= 0);
|
|
}
|
|
|
|
Datum
|
|
timestamp_cmp_date(PG_FUNCTION_ARGS)
|
|
{
|
|
Timestamp dt1 = PG_GETARG_TIMESTAMP(0);
|
|
DateADT dateVal = PG_GETARG_DATEADT(1);
|
|
Timestamp dt2;
|
|
|
|
dt2 = date2timestamp(dateVal);
|
|
|
|
PG_RETURN_INT32(timestamp_cmp_internal(dt1, dt2));
|
|
}
|
|
|
|
Datum
|
|
timestamptz_eq_date(PG_FUNCTION_ARGS)
|
|
{
|
|
TimestampTz dt1 = PG_GETARG_TIMESTAMPTZ(0);
|
|
DateADT dateVal = PG_GETARG_DATEADT(1);
|
|
TimestampTz dt2;
|
|
|
|
dt2 = date2timestamptz(dateVal);
|
|
|
|
PG_RETURN_BOOL(timestamptz_cmp_internal(dt1, dt2) == 0);
|
|
}
|
|
|
|
Datum
|
|
timestamptz_ne_date(PG_FUNCTION_ARGS)
|
|
{
|
|
TimestampTz dt1 = PG_GETARG_TIMESTAMPTZ(0);
|
|
DateADT dateVal = PG_GETARG_DATEADT(1);
|
|
TimestampTz dt2;
|
|
|
|
dt2 = date2timestamptz(dateVal);
|
|
|
|
PG_RETURN_BOOL(timestamptz_cmp_internal(dt1, dt2) != 0);
|
|
}
|
|
|
|
Datum
|
|
timestamptz_lt_date(PG_FUNCTION_ARGS)
|
|
{
|
|
TimestampTz dt1 = PG_GETARG_TIMESTAMPTZ(0);
|
|
DateADT dateVal = PG_GETARG_DATEADT(1);
|
|
TimestampTz dt2;
|
|
|
|
dt2 = date2timestamptz(dateVal);
|
|
|
|
PG_RETURN_BOOL(timestamptz_cmp_internal(dt1, dt2) < 0);
|
|
}
|
|
|
|
Datum
|
|
timestamptz_gt_date(PG_FUNCTION_ARGS)
|
|
{
|
|
TimestampTz dt1 = PG_GETARG_TIMESTAMPTZ(0);
|
|
DateADT dateVal = PG_GETARG_DATEADT(1);
|
|
TimestampTz dt2;
|
|
|
|
dt2 = date2timestamptz(dateVal);
|
|
|
|
PG_RETURN_BOOL(timestamptz_cmp_internal(dt1, dt2) > 0);
|
|
}
|
|
|
|
Datum
|
|
timestamptz_le_date(PG_FUNCTION_ARGS)
|
|
{
|
|
TimestampTz dt1 = PG_GETARG_TIMESTAMPTZ(0);
|
|
DateADT dateVal = PG_GETARG_DATEADT(1);
|
|
TimestampTz dt2;
|
|
|
|
dt2 = date2timestamptz(dateVal);
|
|
|
|
PG_RETURN_BOOL(timestamptz_cmp_internal(dt1, dt2) <= 0);
|
|
}
|
|
|
|
Datum
|
|
timestamptz_ge_date(PG_FUNCTION_ARGS)
|
|
{
|
|
TimestampTz dt1 = PG_GETARG_TIMESTAMPTZ(0);
|
|
DateADT dateVal = PG_GETARG_DATEADT(1);
|
|
TimestampTz dt2;
|
|
|
|
dt2 = date2timestamptz(dateVal);
|
|
|
|
PG_RETURN_BOOL(timestamptz_cmp_internal(dt1, dt2) >= 0);
|
|
}
|
|
|
|
Datum
|
|
timestamptz_cmp_date(PG_FUNCTION_ARGS)
|
|
{
|
|
TimestampTz dt1 = PG_GETARG_TIMESTAMPTZ(0);
|
|
DateADT dateVal = PG_GETARG_DATEADT(1);
|
|
TimestampTz dt2;
|
|
|
|
dt2 = date2timestamptz(dateVal);
|
|
|
|
PG_RETURN_INT32(timestamptz_cmp_internal(dt1, dt2));
|
|
}
|
|
|
|
/*
|
|
* in_range support function for date.
|
|
*
|
|
* We implement this by promoting the dates to timestamp (without time zone)
|
|
* and then using the timestamp-and-interval in_range function.
|
|
*/
|
|
Datum
|
|
in_range_date_interval(PG_FUNCTION_ARGS)
|
|
{
|
|
DateADT val = PG_GETARG_DATEADT(0);
|
|
DateADT base = PG_GETARG_DATEADT(1);
|
|
Interval *offset = PG_GETARG_INTERVAL_P(2);
|
|
bool sub = PG_GETARG_BOOL(3);
|
|
bool less = PG_GETARG_BOOL(4);
|
|
Timestamp valStamp;
|
|
Timestamp baseStamp;
|
|
|
|
valStamp = date2timestamp(val);
|
|
baseStamp = date2timestamp(base);
|
|
|
|
return DirectFunctionCall5(in_range_timestamp_interval,
|
|
TimestampGetDatum(valStamp),
|
|
TimestampGetDatum(baseStamp),
|
|
IntervalPGetDatum(offset),
|
|
BoolGetDatum(sub),
|
|
BoolGetDatum(less));
|
|
}
|
|
|
|
|
|
/* Add an interval to a date, giving a new date.
|
|
* Must handle both positive and negative intervals.
|
|
*
|
|
* We implement this by promoting the date to timestamp (without time zone)
|
|
* and then using the timestamp plus interval function.
|
|
*/
|
|
Datum
|
|
date_pl_interval(PG_FUNCTION_ARGS)
|
|
{
|
|
DateADT dateVal = PG_GETARG_DATEADT(0);
|
|
Interval *span = PG_GETARG_INTERVAL_P(1);
|
|
Timestamp dateStamp;
|
|
|
|
dateStamp = date2timestamp(dateVal);
|
|
|
|
return DirectFunctionCall2(timestamp_pl_interval,
|
|
TimestampGetDatum(dateStamp),
|
|
PointerGetDatum(span));
|
|
}
|
|
|
|
/* Subtract an interval from a date, giving a new date.
|
|
* Must handle both positive and negative intervals.
|
|
*
|
|
* We implement this by promoting the date to timestamp (without time zone)
|
|
* and then using the timestamp minus interval function.
|
|
*/
|
|
Datum
|
|
date_mi_interval(PG_FUNCTION_ARGS)
|
|
{
|
|
DateADT dateVal = PG_GETARG_DATEADT(0);
|
|
Interval *span = PG_GETARG_INTERVAL_P(1);
|
|
Timestamp dateStamp;
|
|
|
|
dateStamp = date2timestamp(dateVal);
|
|
|
|
return DirectFunctionCall2(timestamp_mi_interval,
|
|
TimestampGetDatum(dateStamp),
|
|
PointerGetDatum(span));
|
|
}
|
|
|
|
/* date_timestamp()
|
|
* Convert date to timestamp data type.
|
|
*/
|
|
Datum
|
|
date_timestamp(PG_FUNCTION_ARGS)
|
|
{
|
|
DateADT dateVal = PG_GETARG_DATEADT(0);
|
|
Timestamp result;
|
|
|
|
result = date2timestamp(dateVal);
|
|
|
|
PG_RETURN_TIMESTAMP(result);
|
|
}
|
|
|
|
/* timestamp_date()
|
|
* Convert timestamp to date data type.
|
|
*/
|
|
Datum
|
|
timestamp_date(PG_FUNCTION_ARGS)
|
|
{
|
|
Timestamp timestamp = PG_GETARG_TIMESTAMP(0);
|
|
DateADT result;
|
|
struct pg_tm tt,
|
|
*tm = &tt;
|
|
fsec_t fsec;
|
|
|
|
if (TIMESTAMP_IS_NOBEGIN(timestamp))
|
|
DATE_NOBEGIN(result);
|
|
else if (TIMESTAMP_IS_NOEND(timestamp))
|
|
DATE_NOEND(result);
|
|
else
|
|
{
|
|
if (timestamp2tm(timestamp, NULL, tm, &fsec, NULL, NULL) != 0)
|
|
ereport(ERROR,
|
|
(errcode(ERRCODE_DATETIME_VALUE_OUT_OF_RANGE),
|
|
errmsg("timestamp out of range")));
|
|
|
|
result = date2j(tm->tm_year, tm->tm_mon, tm->tm_mday) - POSTGRES_EPOCH_JDATE;
|
|
}
|
|
|
|
PG_RETURN_DATEADT(result);
|
|
}
|
|
|
|
|
|
/* date_timestamptz()
|
|
* Convert date to timestamp with time zone data type.
|
|
*/
|
|
Datum
|
|
date_timestamptz(PG_FUNCTION_ARGS)
|
|
{
|
|
DateADT dateVal = PG_GETARG_DATEADT(0);
|
|
TimestampTz result;
|
|
|
|
result = date2timestamptz(dateVal);
|
|
|
|
PG_RETURN_TIMESTAMP(result);
|
|
}
|
|
|
|
|
|
/* timestamptz_date()
|
|
* Convert timestamp with time zone to date data type.
|
|
*/
|
|
Datum
|
|
timestamptz_date(PG_FUNCTION_ARGS)
|
|
{
|
|
TimestampTz timestamp = PG_GETARG_TIMESTAMP(0);
|
|
DateADT result;
|
|
struct pg_tm tt,
|
|
*tm = &tt;
|
|
fsec_t fsec;
|
|
int tz;
|
|
|
|
if (TIMESTAMP_IS_NOBEGIN(timestamp))
|
|
DATE_NOBEGIN(result);
|
|
else if (TIMESTAMP_IS_NOEND(timestamp))
|
|
DATE_NOEND(result);
|
|
else
|
|
{
|
|
if (timestamp2tm(timestamp, &tz, tm, &fsec, NULL, NULL) != 0)
|
|
ereport(ERROR,
|
|
(errcode(ERRCODE_DATETIME_VALUE_OUT_OF_RANGE),
|
|
errmsg("timestamp out of range")));
|
|
|
|
result = date2j(tm->tm_year, tm->tm_mon, tm->tm_mday) - POSTGRES_EPOCH_JDATE;
|
|
}
|
|
|
|
PG_RETURN_DATEADT(result);
|
|
}
|
|
|
|
|
|
/*****************************************************************************
|
|
* Time ADT
|
|
*****************************************************************************/
|
|
|
|
Datum
|
|
time_in(PG_FUNCTION_ARGS)
|
|
{
|
|
char *str = PG_GETARG_CSTRING(0);
|
|
|
|
#ifdef NOT_USED
|
|
Oid typelem = PG_GETARG_OID(1);
|
|
#endif
|
|
int32 typmod = PG_GETARG_INT32(2);
|
|
TimeADT result;
|
|
fsec_t fsec;
|
|
struct pg_tm tt,
|
|
*tm = &tt;
|
|
int tz;
|
|
int nf;
|
|
int dterr;
|
|
char workbuf[MAXDATELEN + 1];
|
|
char *field[MAXDATEFIELDS];
|
|
int dtype;
|
|
int ftype[MAXDATEFIELDS];
|
|
|
|
dterr = ParseDateTime(str, workbuf, sizeof(workbuf),
|
|
field, ftype, MAXDATEFIELDS, &nf);
|
|
if (dterr == 0)
|
|
dterr = DecodeTimeOnly(field, ftype, nf, &dtype, tm, &fsec, &tz);
|
|
if (dterr != 0)
|
|
DateTimeParseError(dterr, str, "time");
|
|
|
|
tm2time(tm, fsec, &result);
|
|
AdjustTimeForTypmod(&result, typmod);
|
|
|
|
PG_RETURN_TIMEADT(result);
|
|
}
|
|
|
|
/* tm2time()
|
|
* Convert a tm structure to a time data type.
|
|
*/
|
|
int
|
|
tm2time(struct pg_tm *tm, fsec_t fsec, TimeADT *result)
|
|
{
|
|
*result = ((((tm->tm_hour * MINS_PER_HOUR + tm->tm_min) * SECS_PER_MINUTE) + tm->tm_sec)
|
|
* USECS_PER_SEC) + fsec;
|
|
return 0;
|
|
}
|
|
|
|
/* time_overflows()
|
|
* Check to see if a broken-down time-of-day is out of range.
|
|
*/
|
|
bool
|
|
time_overflows(int hour, int min, int sec, fsec_t fsec)
|
|
{
|
|
/* Range-check the fields individually. */
|
|
if (hour < 0 || hour > HOURS_PER_DAY ||
|
|
min < 0 || min >= MINS_PER_HOUR ||
|
|
sec < 0 || sec > SECS_PER_MINUTE ||
|
|
fsec < 0 || fsec > USECS_PER_SEC)
|
|
return true;
|
|
|
|
/*
|
|
* Because we allow, eg, hour = 24 or sec = 60, we must check separately
|
|
* that the total time value doesn't exceed 24:00:00.
|
|
*/
|
|
if ((((((hour * MINS_PER_HOUR + min) * SECS_PER_MINUTE)
|
|
+ sec) * USECS_PER_SEC) + fsec) > USECS_PER_DAY)
|
|
return true;
|
|
|
|
return false;
|
|
}
|
|
|
|
/* float_time_overflows()
|
|
* Same, when we have seconds + fractional seconds as one "double" value.
|
|
*/
|
|
bool
|
|
float_time_overflows(int hour, int min, double sec)
|
|
{
|
|
/* Range-check the fields individually. */
|
|
if (hour < 0 || hour > HOURS_PER_DAY ||
|
|
min < 0 || min >= MINS_PER_HOUR)
|
|
return true;
|
|
|
|
/*
|
|
* "sec", being double, requires extra care. Cope with NaN, and round off
|
|
* before applying the range check to avoid unexpected errors due to
|
|
* imprecise input. (We assume rint() behaves sanely with infinities.)
|
|
*/
|
|
if (isnan(sec))
|
|
return true;
|
|
sec = rint(sec * USECS_PER_SEC);
|
|
if (sec < 0 || sec > SECS_PER_MINUTE * USECS_PER_SEC)
|
|
return true;
|
|
|
|
/*
|
|
* Because we allow, eg, hour = 24 or sec = 60, we must check separately
|
|
* that the total time value doesn't exceed 24:00:00. This must match the
|
|
* way that callers will convert the fields to a time.
|
|
*/
|
|
if (((((hour * MINS_PER_HOUR + min) * SECS_PER_MINUTE)
|
|
* USECS_PER_SEC) + (int64) sec) > USECS_PER_DAY)
|
|
return true;
|
|
|
|
return false;
|
|
}
|
|
|
|
|
|
/* time2tm()
|
|
* Convert time data type to POSIX time structure.
|
|
*
|
|
* For dates within the range of pg_time_t, convert to the local time zone.
|
|
* If out of this range, leave as UTC (in practice that could only happen
|
|
* if pg_time_t is just 32 bits) - thomas 97/05/27
|
|
*/
|
|
int
|
|
time2tm(TimeADT time, struct pg_tm *tm, fsec_t *fsec)
|
|
{
|
|
tm->tm_hour = time / USECS_PER_HOUR;
|
|
time -= tm->tm_hour * USECS_PER_HOUR;
|
|
tm->tm_min = time / USECS_PER_MINUTE;
|
|
time -= tm->tm_min * USECS_PER_MINUTE;
|
|
tm->tm_sec = time / USECS_PER_SEC;
|
|
time -= tm->tm_sec * USECS_PER_SEC;
|
|
*fsec = time;
|
|
return 0;
|
|
}
|
|
|
|
Datum
|
|
time_out(PG_FUNCTION_ARGS)
|
|
{
|
|
TimeADT time = PG_GETARG_TIMEADT(0);
|
|
char *result;
|
|
struct pg_tm tt,
|
|
*tm = &tt;
|
|
fsec_t fsec;
|
|
char buf[MAXDATELEN + 1];
|
|
|
|
time2tm(time, tm, &fsec);
|
|
EncodeTimeOnly(tm, fsec, false, 0, DateStyle, buf);
|
|
|
|
result = pstrdup(buf);
|
|
PG_RETURN_CSTRING(result);
|
|
}
|
|
|
|
/*
|
|
* time_recv - converts external binary format to time
|
|
*/
|
|
Datum
|
|
time_recv(PG_FUNCTION_ARGS)
|
|
{
|
|
StringInfo buf = (StringInfo) PG_GETARG_POINTER(0);
|
|
|
|
#ifdef NOT_USED
|
|
Oid typelem = PG_GETARG_OID(1);
|
|
#endif
|
|
int32 typmod = PG_GETARG_INT32(2);
|
|
TimeADT result;
|
|
|
|
result = pq_getmsgint64(buf);
|
|
|
|
if (result < INT64CONST(0) || result > USECS_PER_DAY)
|
|
ereport(ERROR,
|
|
(errcode(ERRCODE_DATETIME_VALUE_OUT_OF_RANGE),
|
|
errmsg("time out of range")));
|
|
|
|
AdjustTimeForTypmod(&result, typmod);
|
|
|
|
PG_RETURN_TIMEADT(result);
|
|
}
|
|
|
|
/*
|
|
* time_send - converts time to binary format
|
|
*/
|
|
Datum
|
|
time_send(PG_FUNCTION_ARGS)
|
|
{
|
|
TimeADT time = PG_GETARG_TIMEADT(0);
|
|
StringInfoData buf;
|
|
|
|
pq_begintypsend(&buf);
|
|
pq_sendint64(&buf, time);
|
|
PG_RETURN_BYTEA_P(pq_endtypsend(&buf));
|
|
}
|
|
|
|
Datum
|
|
timetypmodin(PG_FUNCTION_ARGS)
|
|
{
|
|
ArrayType *ta = PG_GETARG_ARRAYTYPE_P(0);
|
|
|
|
PG_RETURN_INT32(anytime_typmodin(false, ta));
|
|
}
|
|
|
|
Datum
|
|
timetypmodout(PG_FUNCTION_ARGS)
|
|
{
|
|
int32 typmod = PG_GETARG_INT32(0);
|
|
|
|
PG_RETURN_CSTRING(anytime_typmodout(false, typmod));
|
|
}
|
|
|
|
/*
|
|
* make_time - time constructor
|
|
*/
|
|
Datum
|
|
make_time(PG_FUNCTION_ARGS)
|
|
{
|
|
int tm_hour = PG_GETARG_INT32(0);
|
|
int tm_min = PG_GETARG_INT32(1);
|
|
double sec = PG_GETARG_FLOAT8(2);
|
|
TimeADT time;
|
|
|
|
/* Check for time overflow */
|
|
if (float_time_overflows(tm_hour, tm_min, sec))
|
|
ereport(ERROR,
|
|
(errcode(ERRCODE_DATETIME_FIELD_OVERFLOW),
|
|
errmsg("time field value out of range: %d:%02d:%02g",
|
|
tm_hour, tm_min, sec)));
|
|
|
|
/* This should match tm2time */
|
|
time = (((tm_hour * MINS_PER_HOUR + tm_min) * SECS_PER_MINUTE)
|
|
* USECS_PER_SEC) + (int64) rint(sec * USECS_PER_SEC);
|
|
|
|
PG_RETURN_TIMEADT(time);
|
|
}
|
|
|
|
|
|
/* time_support()
|
|
*
|
|
* Planner support function for the time_scale() and timetz_scale()
|
|
* length coercion functions (we need not distinguish them here).
|
|
*/
|
|
Datum
|
|
time_support(PG_FUNCTION_ARGS)
|
|
{
|
|
Node *rawreq = (Node *) PG_GETARG_POINTER(0);
|
|
Node *ret = NULL;
|
|
|
|
if (IsA(rawreq, SupportRequestSimplify))
|
|
{
|
|
SupportRequestSimplify *req = (SupportRequestSimplify *) rawreq;
|
|
|
|
ret = TemporalSimplify(MAX_TIME_PRECISION, (Node *) req->fcall);
|
|
}
|
|
|
|
PG_RETURN_POINTER(ret);
|
|
}
|
|
|
|
/* time_scale()
|
|
* Adjust time type for specified scale factor.
|
|
* Used by PostgreSQL type system to stuff columns.
|
|
*/
|
|
Datum
|
|
time_scale(PG_FUNCTION_ARGS)
|
|
{
|
|
TimeADT time = PG_GETARG_TIMEADT(0);
|
|
int32 typmod = PG_GETARG_INT32(1);
|
|
TimeADT result;
|
|
|
|
result = time;
|
|
AdjustTimeForTypmod(&result, typmod);
|
|
|
|
PG_RETURN_TIMEADT(result);
|
|
}
|
|
|
|
/* AdjustTimeForTypmod()
|
|
* Force the precision of the time value to a specified value.
|
|
* Uses *exactly* the same code as in AdjustTimestampForTypmod()
|
|
* but we make a separate copy because those types do not
|
|
* have a fundamental tie together but rather a coincidence of
|
|
* implementation. - thomas
|
|
*/
|
|
void
|
|
AdjustTimeForTypmod(TimeADT *time, int32 typmod)
|
|
{
|
|
static const int64 TimeScales[MAX_TIME_PRECISION + 1] = {
|
|
INT64CONST(1000000),
|
|
INT64CONST(100000),
|
|
INT64CONST(10000),
|
|
INT64CONST(1000),
|
|
INT64CONST(100),
|
|
INT64CONST(10),
|
|
INT64CONST(1)
|
|
};
|
|
|
|
static const int64 TimeOffsets[MAX_TIME_PRECISION + 1] = {
|
|
INT64CONST(500000),
|
|
INT64CONST(50000),
|
|
INT64CONST(5000),
|
|
INT64CONST(500),
|
|
INT64CONST(50),
|
|
INT64CONST(5),
|
|
INT64CONST(0)
|
|
};
|
|
|
|
if (typmod >= 0 && typmod <= MAX_TIME_PRECISION)
|
|
{
|
|
if (*time >= INT64CONST(0))
|
|
*time = ((*time + TimeOffsets[typmod]) / TimeScales[typmod]) *
|
|
TimeScales[typmod];
|
|
else
|
|
*time = -((((-*time) + TimeOffsets[typmod]) / TimeScales[typmod]) *
|
|
TimeScales[typmod]);
|
|
}
|
|
}
|
|
|
|
|
|
Datum
|
|
time_eq(PG_FUNCTION_ARGS)
|
|
{
|
|
TimeADT time1 = PG_GETARG_TIMEADT(0);
|
|
TimeADT time2 = PG_GETARG_TIMEADT(1);
|
|
|
|
PG_RETURN_BOOL(time1 == time2);
|
|
}
|
|
|
|
Datum
|
|
time_ne(PG_FUNCTION_ARGS)
|
|
{
|
|
TimeADT time1 = PG_GETARG_TIMEADT(0);
|
|
TimeADT time2 = PG_GETARG_TIMEADT(1);
|
|
|
|
PG_RETURN_BOOL(time1 != time2);
|
|
}
|
|
|
|
Datum
|
|
time_lt(PG_FUNCTION_ARGS)
|
|
{
|
|
TimeADT time1 = PG_GETARG_TIMEADT(0);
|
|
TimeADT time2 = PG_GETARG_TIMEADT(1);
|
|
|
|
PG_RETURN_BOOL(time1 < time2);
|
|
}
|
|
|
|
Datum
|
|
time_le(PG_FUNCTION_ARGS)
|
|
{
|
|
TimeADT time1 = PG_GETARG_TIMEADT(0);
|
|
TimeADT time2 = PG_GETARG_TIMEADT(1);
|
|
|
|
PG_RETURN_BOOL(time1 <= time2);
|
|
}
|
|
|
|
Datum
|
|
time_gt(PG_FUNCTION_ARGS)
|
|
{
|
|
TimeADT time1 = PG_GETARG_TIMEADT(0);
|
|
TimeADT time2 = PG_GETARG_TIMEADT(1);
|
|
|
|
PG_RETURN_BOOL(time1 > time2);
|
|
}
|
|
|
|
Datum
|
|
time_ge(PG_FUNCTION_ARGS)
|
|
{
|
|
TimeADT time1 = PG_GETARG_TIMEADT(0);
|
|
TimeADT time2 = PG_GETARG_TIMEADT(1);
|
|
|
|
PG_RETURN_BOOL(time1 >= time2);
|
|
}
|
|
|
|
Datum
|
|
time_cmp(PG_FUNCTION_ARGS)
|
|
{
|
|
TimeADT time1 = PG_GETARG_TIMEADT(0);
|
|
TimeADT time2 = PG_GETARG_TIMEADT(1);
|
|
|
|
if (time1 < time2)
|
|
PG_RETURN_INT32(-1);
|
|
if (time1 > time2)
|
|
PG_RETURN_INT32(1);
|
|
PG_RETURN_INT32(0);
|
|
}
|
|
|
|
Datum
|
|
time_hash(PG_FUNCTION_ARGS)
|
|
{
|
|
return hashint8(fcinfo);
|
|
}
|
|
|
|
Datum
|
|
time_hash_extended(PG_FUNCTION_ARGS)
|
|
{
|
|
return hashint8extended(fcinfo);
|
|
}
|
|
|
|
Datum
|
|
time_larger(PG_FUNCTION_ARGS)
|
|
{
|
|
TimeADT time1 = PG_GETARG_TIMEADT(0);
|
|
TimeADT time2 = PG_GETARG_TIMEADT(1);
|
|
|
|
PG_RETURN_TIMEADT((time1 > time2) ? time1 : time2);
|
|
}
|
|
|
|
Datum
|
|
time_smaller(PG_FUNCTION_ARGS)
|
|
{
|
|
TimeADT time1 = PG_GETARG_TIMEADT(0);
|
|
TimeADT time2 = PG_GETARG_TIMEADT(1);
|
|
|
|
PG_RETURN_TIMEADT((time1 < time2) ? time1 : time2);
|
|
}
|
|
|
|
/* overlaps_time() --- implements the SQL OVERLAPS operator.
|
|
*
|
|
* Algorithm is per SQL spec. This is much harder than you'd think
|
|
* because the spec requires us to deliver a non-null answer in some cases
|
|
* where some of the inputs are null.
|
|
*/
|
|
Datum
|
|
overlaps_time(PG_FUNCTION_ARGS)
|
|
{
|
|
/*
|
|
* The arguments are TimeADT, but we leave them as generic Datums to avoid
|
|
* dereferencing nulls (TimeADT is pass-by-reference!)
|
|
*/
|
|
Datum ts1 = PG_GETARG_DATUM(0);
|
|
Datum te1 = PG_GETARG_DATUM(1);
|
|
Datum ts2 = PG_GETARG_DATUM(2);
|
|
Datum te2 = PG_GETARG_DATUM(3);
|
|
bool ts1IsNull = PG_ARGISNULL(0);
|
|
bool te1IsNull = PG_ARGISNULL(1);
|
|
bool ts2IsNull = PG_ARGISNULL(2);
|
|
bool te2IsNull = PG_ARGISNULL(3);
|
|
|
|
#define TIMEADT_GT(t1,t2) \
|
|
(DatumGetTimeADT(t1) > DatumGetTimeADT(t2))
|
|
#define TIMEADT_LT(t1,t2) \
|
|
(DatumGetTimeADT(t1) < DatumGetTimeADT(t2))
|
|
|
|
/*
|
|
* If both endpoints of interval 1 are null, the result is null (unknown).
|
|
* If just one endpoint is null, take ts1 as the non-null one. Otherwise,
|
|
* take ts1 as the lesser endpoint.
|
|
*/
|
|
if (ts1IsNull)
|
|
{
|
|
if (te1IsNull)
|
|
PG_RETURN_NULL();
|
|
/* swap null for non-null */
|
|
ts1 = te1;
|
|
te1IsNull = true;
|
|
}
|
|
else if (!te1IsNull)
|
|
{
|
|
if (TIMEADT_GT(ts1, te1))
|
|
{
|
|
Datum tt = ts1;
|
|
|
|
ts1 = te1;
|
|
te1 = tt;
|
|
}
|
|
}
|
|
|
|
/* Likewise for interval 2. */
|
|
if (ts2IsNull)
|
|
{
|
|
if (te2IsNull)
|
|
PG_RETURN_NULL();
|
|
/* swap null for non-null */
|
|
ts2 = te2;
|
|
te2IsNull = true;
|
|
}
|
|
else if (!te2IsNull)
|
|
{
|
|
if (TIMEADT_GT(ts2, te2))
|
|
{
|
|
Datum tt = ts2;
|
|
|
|
ts2 = te2;
|
|
te2 = tt;
|
|
}
|
|
}
|
|
|
|
/*
|
|
* At this point neither ts1 nor ts2 is null, so we can consider three
|
|
* cases: ts1 > ts2, ts1 < ts2, ts1 = ts2
|
|
*/
|
|
if (TIMEADT_GT(ts1, ts2))
|
|
{
|
|
/*
|
|
* This case is ts1 < te2 OR te1 < te2, which may look redundant but
|
|
* in the presence of nulls it's not quite completely so.
|
|
*/
|
|
if (te2IsNull)
|
|
PG_RETURN_NULL();
|
|
if (TIMEADT_LT(ts1, te2))
|
|
PG_RETURN_BOOL(true);
|
|
if (te1IsNull)
|
|
PG_RETURN_NULL();
|
|
|
|
/*
|
|
* If te1 is not null then we had ts1 <= te1 above, and we just found
|
|
* ts1 >= te2, hence te1 >= te2.
|
|
*/
|
|
PG_RETURN_BOOL(false);
|
|
}
|
|
else if (TIMEADT_LT(ts1, ts2))
|
|
{
|
|
/* This case is ts2 < te1 OR te2 < te1 */
|
|
if (te1IsNull)
|
|
PG_RETURN_NULL();
|
|
if (TIMEADT_LT(ts2, te1))
|
|
PG_RETURN_BOOL(true);
|
|
if (te2IsNull)
|
|
PG_RETURN_NULL();
|
|
|
|
/*
|
|
* If te2 is not null then we had ts2 <= te2 above, and we just found
|
|
* ts2 >= te1, hence te2 >= te1.
|
|
*/
|
|
PG_RETURN_BOOL(false);
|
|
}
|
|
else
|
|
{
|
|
/*
|
|
* For ts1 = ts2 the spec says te1 <> te2 OR te1 = te2, which is a
|
|
* rather silly way of saying "true if both are nonnull, else null".
|
|
*/
|
|
if (te1IsNull || te2IsNull)
|
|
PG_RETURN_NULL();
|
|
PG_RETURN_BOOL(true);
|
|
}
|
|
|
|
#undef TIMEADT_GT
|
|
#undef TIMEADT_LT
|
|
}
|
|
|
|
/* timestamp_time()
|
|
* Convert timestamp to time data type.
|
|
*/
|
|
Datum
|
|
timestamp_time(PG_FUNCTION_ARGS)
|
|
{
|
|
Timestamp timestamp = PG_GETARG_TIMESTAMP(0);
|
|
TimeADT result;
|
|
struct pg_tm tt,
|
|
*tm = &tt;
|
|
fsec_t fsec;
|
|
|
|
if (TIMESTAMP_NOT_FINITE(timestamp))
|
|
PG_RETURN_NULL();
|
|
|
|
if (timestamp2tm(timestamp, NULL, tm, &fsec, NULL, NULL) != 0)
|
|
ereport(ERROR,
|
|
(errcode(ERRCODE_DATETIME_VALUE_OUT_OF_RANGE),
|
|
errmsg("timestamp out of range")));
|
|
|
|
/*
|
|
* Could also do this with time = (timestamp / USECS_PER_DAY *
|
|
* USECS_PER_DAY) - timestamp;
|
|
*/
|
|
result = ((((tm->tm_hour * MINS_PER_HOUR + tm->tm_min) * SECS_PER_MINUTE) + tm->tm_sec) *
|
|
USECS_PER_SEC) + fsec;
|
|
|
|
PG_RETURN_TIMEADT(result);
|
|
}
|
|
|
|
/* timestamptz_time()
|
|
* Convert timestamptz to time data type.
|
|
*/
|
|
Datum
|
|
timestamptz_time(PG_FUNCTION_ARGS)
|
|
{
|
|
TimestampTz timestamp = PG_GETARG_TIMESTAMP(0);
|
|
TimeADT result;
|
|
struct pg_tm tt,
|
|
*tm = &tt;
|
|
int tz;
|
|
fsec_t fsec;
|
|
|
|
if (TIMESTAMP_NOT_FINITE(timestamp))
|
|
PG_RETURN_NULL();
|
|
|
|
if (timestamp2tm(timestamp, &tz, tm, &fsec, NULL, NULL) != 0)
|
|
ereport(ERROR,
|
|
(errcode(ERRCODE_DATETIME_VALUE_OUT_OF_RANGE),
|
|
errmsg("timestamp out of range")));
|
|
|
|
/*
|
|
* Could also do this with time = (timestamp / USECS_PER_DAY *
|
|
* USECS_PER_DAY) - timestamp;
|
|
*/
|
|
result = ((((tm->tm_hour * MINS_PER_HOUR + tm->tm_min) * SECS_PER_MINUTE) + tm->tm_sec) *
|
|
USECS_PER_SEC) + fsec;
|
|
|
|
PG_RETURN_TIMEADT(result);
|
|
}
|
|
|
|
/* datetime_timestamp()
|
|
* Convert date and time to timestamp data type.
|
|
*/
|
|
Datum
|
|
datetime_timestamp(PG_FUNCTION_ARGS)
|
|
{
|
|
DateADT date = PG_GETARG_DATEADT(0);
|
|
TimeADT time = PG_GETARG_TIMEADT(1);
|
|
Timestamp result;
|
|
|
|
result = date2timestamp(date);
|
|
if (!TIMESTAMP_NOT_FINITE(result))
|
|
{
|
|
result += time;
|
|
if (!IS_VALID_TIMESTAMP(result))
|
|
ereport(ERROR,
|
|
(errcode(ERRCODE_DATETIME_VALUE_OUT_OF_RANGE),
|
|
errmsg("timestamp out of range")));
|
|
}
|
|
|
|
PG_RETURN_TIMESTAMP(result);
|
|
}
|
|
|
|
/* time_interval()
|
|
* Convert time to interval data type.
|
|
*/
|
|
Datum
|
|
time_interval(PG_FUNCTION_ARGS)
|
|
{
|
|
TimeADT time = PG_GETARG_TIMEADT(0);
|
|
Interval *result;
|
|
|
|
result = (Interval *) palloc(sizeof(Interval));
|
|
|
|
result->time = time;
|
|
result->day = 0;
|
|
result->month = 0;
|
|
|
|
PG_RETURN_INTERVAL_P(result);
|
|
}
|
|
|
|
/* interval_time()
|
|
* Convert interval to time data type.
|
|
*
|
|
* This is defined as producing the fractional-day portion of the interval.
|
|
* Therefore, we can just ignore the months field. It is not real clear
|
|
* what to do with negative intervals, but we choose to subtract the floor,
|
|
* so that, say, '-2 hours' becomes '22:00:00'.
|
|
*/
|
|
Datum
|
|
interval_time(PG_FUNCTION_ARGS)
|
|
{
|
|
Interval *span = PG_GETARG_INTERVAL_P(0);
|
|
TimeADT result;
|
|
int64 days;
|
|
|
|
result = span->time;
|
|
if (result >= USECS_PER_DAY)
|
|
{
|
|
days = result / USECS_PER_DAY;
|
|
result -= days * USECS_PER_DAY;
|
|
}
|
|
else if (result < 0)
|
|
{
|
|
days = (-result + USECS_PER_DAY - 1) / USECS_PER_DAY;
|
|
result += days * USECS_PER_DAY;
|
|
}
|
|
|
|
PG_RETURN_TIMEADT(result);
|
|
}
|
|
|
|
/* time_mi_time()
|
|
* Subtract two times to produce an interval.
|
|
*/
|
|
Datum
|
|
time_mi_time(PG_FUNCTION_ARGS)
|
|
{
|
|
TimeADT time1 = PG_GETARG_TIMEADT(0);
|
|
TimeADT time2 = PG_GETARG_TIMEADT(1);
|
|
Interval *result;
|
|
|
|
result = (Interval *) palloc(sizeof(Interval));
|
|
|
|
result->month = 0;
|
|
result->day = 0;
|
|
result->time = time1 - time2;
|
|
|
|
PG_RETURN_INTERVAL_P(result);
|
|
}
|
|
|
|
/* time_pl_interval()
|
|
* Add interval to time.
|
|
*/
|
|
Datum
|
|
time_pl_interval(PG_FUNCTION_ARGS)
|
|
{
|
|
TimeADT time = PG_GETARG_TIMEADT(0);
|
|
Interval *span = PG_GETARG_INTERVAL_P(1);
|
|
TimeADT result;
|
|
|
|
result = time + span->time;
|
|
result -= result / USECS_PER_DAY * USECS_PER_DAY;
|
|
if (result < INT64CONST(0))
|
|
result += USECS_PER_DAY;
|
|
|
|
PG_RETURN_TIMEADT(result);
|
|
}
|
|
|
|
/* time_mi_interval()
|
|
* Subtract interval from time.
|
|
*/
|
|
Datum
|
|
time_mi_interval(PG_FUNCTION_ARGS)
|
|
{
|
|
TimeADT time = PG_GETARG_TIMEADT(0);
|
|
Interval *span = PG_GETARG_INTERVAL_P(1);
|
|
TimeADT result;
|
|
|
|
result = time - span->time;
|
|
result -= result / USECS_PER_DAY * USECS_PER_DAY;
|
|
if (result < INT64CONST(0))
|
|
result += USECS_PER_DAY;
|
|
|
|
PG_RETURN_TIMEADT(result);
|
|
}
|
|
|
|
/*
|
|
* in_range support function for time.
|
|
*/
|
|
Datum
|
|
in_range_time_interval(PG_FUNCTION_ARGS)
|
|
{
|
|
TimeADT val = PG_GETARG_TIMEADT(0);
|
|
TimeADT base = PG_GETARG_TIMEADT(1);
|
|
Interval *offset = PG_GETARG_INTERVAL_P(2);
|
|
bool sub = PG_GETARG_BOOL(3);
|
|
bool less = PG_GETARG_BOOL(4);
|
|
TimeADT sum;
|
|
|
|
/*
|
|
* Like time_pl_interval/time_mi_interval, we disregard the month and day
|
|
* fields of the offset. So our test for negative should too.
|
|
*/
|
|
if (offset->time < 0)
|
|
ereport(ERROR,
|
|
(errcode(ERRCODE_INVALID_PRECEDING_OR_FOLLOWING_SIZE),
|
|
errmsg("invalid preceding or following size in window function")));
|
|
|
|
/*
|
|
* We can't use time_pl_interval/time_mi_interval here, because their
|
|
* wraparound behavior would give wrong (or at least undesirable) answers.
|
|
* Fortunately the equivalent non-wrapping behavior is trivial, especially
|
|
* since we don't worry about integer overflow.
|
|
*/
|
|
if (sub)
|
|
sum = base - offset->time;
|
|
else
|
|
sum = base + offset->time;
|
|
|
|
if (less)
|
|
PG_RETURN_BOOL(val <= sum);
|
|
else
|
|
PG_RETURN_BOOL(val >= sum);
|
|
}
|
|
|
|
|
|
/* time_part()
|
|
* Extract specified field from time type.
|
|
*/
|
|
Datum
|
|
time_part(PG_FUNCTION_ARGS)
|
|
{
|
|
text *units = PG_GETARG_TEXT_PP(0);
|
|
TimeADT time = PG_GETARG_TIMEADT(1);
|
|
float8 result;
|
|
int type,
|
|
val;
|
|
char *lowunits;
|
|
|
|
lowunits = downcase_truncate_identifier(VARDATA_ANY(units),
|
|
VARSIZE_ANY_EXHDR(units),
|
|
false);
|
|
|
|
type = DecodeUnits(0, lowunits, &val);
|
|
if (type == UNKNOWN_FIELD)
|
|
type = DecodeSpecial(0, lowunits, &val);
|
|
|
|
if (type == UNITS)
|
|
{
|
|
fsec_t fsec;
|
|
struct pg_tm tt,
|
|
*tm = &tt;
|
|
|
|
time2tm(time, tm, &fsec);
|
|
|
|
switch (val)
|
|
{
|
|
case DTK_MICROSEC:
|
|
result = tm->tm_sec * 1000000.0 + fsec;
|
|
break;
|
|
|
|
case DTK_MILLISEC:
|
|
result = tm->tm_sec * 1000.0 + fsec / 1000.0;
|
|
break;
|
|
|
|
case DTK_SECOND:
|
|
result = tm->tm_sec + fsec / 1000000.0;
|
|
break;
|
|
|
|
case DTK_MINUTE:
|
|
result = tm->tm_min;
|
|
break;
|
|
|
|
case DTK_HOUR:
|
|
result = tm->tm_hour;
|
|
break;
|
|
|
|
case DTK_TZ:
|
|
case DTK_TZ_MINUTE:
|
|
case DTK_TZ_HOUR:
|
|
case DTK_DAY:
|
|
case DTK_MONTH:
|
|
case DTK_QUARTER:
|
|
case DTK_YEAR:
|
|
case DTK_DECADE:
|
|
case DTK_CENTURY:
|
|
case DTK_MILLENNIUM:
|
|
case DTK_ISOYEAR:
|
|
default:
|
|
ereport(ERROR,
|
|
(errcode(ERRCODE_INVALID_PARAMETER_VALUE),
|
|
errmsg("\"time\" units \"%s\" not recognized",
|
|
lowunits)));
|
|
result = 0;
|
|
}
|
|
}
|
|
else if (type == RESERV && val == DTK_EPOCH)
|
|
{
|
|
result = time / 1000000.0;
|
|
}
|
|
else
|
|
{
|
|
ereport(ERROR,
|
|
(errcode(ERRCODE_INVALID_PARAMETER_VALUE),
|
|
errmsg("\"time\" units \"%s\" not recognized",
|
|
lowunits)));
|
|
result = 0;
|
|
}
|
|
|
|
PG_RETURN_FLOAT8(result);
|
|
}
|
|
|
|
|
|
/*****************************************************************************
|
|
* Time With Time Zone ADT
|
|
*****************************************************************************/
|
|
|
|
/* tm2timetz()
|
|
* Convert a tm structure to a time data type.
|
|
*/
|
|
int
|
|
tm2timetz(struct pg_tm *tm, fsec_t fsec, int tz, TimeTzADT *result)
|
|
{
|
|
result->time = ((((tm->tm_hour * MINS_PER_HOUR + tm->tm_min) * SECS_PER_MINUTE) + tm->tm_sec) *
|
|
USECS_PER_SEC) + fsec;
|
|
result->zone = tz;
|
|
|
|
return 0;
|
|
}
|
|
|
|
Datum
|
|
timetz_in(PG_FUNCTION_ARGS)
|
|
{
|
|
char *str = PG_GETARG_CSTRING(0);
|
|
|
|
#ifdef NOT_USED
|
|
Oid typelem = PG_GETARG_OID(1);
|
|
#endif
|
|
int32 typmod = PG_GETARG_INT32(2);
|
|
TimeTzADT *result;
|
|
fsec_t fsec;
|
|
struct pg_tm tt,
|
|
*tm = &tt;
|
|
int tz;
|
|
int nf;
|
|
int dterr;
|
|
char workbuf[MAXDATELEN + 1];
|
|
char *field[MAXDATEFIELDS];
|
|
int dtype;
|
|
int ftype[MAXDATEFIELDS];
|
|
|
|
dterr = ParseDateTime(str, workbuf, sizeof(workbuf),
|
|
field, ftype, MAXDATEFIELDS, &nf);
|
|
if (dterr == 0)
|
|
dterr = DecodeTimeOnly(field, ftype, nf, &dtype, tm, &fsec, &tz);
|
|
if (dterr != 0)
|
|
DateTimeParseError(dterr, str, "time with time zone");
|
|
|
|
result = (TimeTzADT *) palloc(sizeof(TimeTzADT));
|
|
tm2timetz(tm, fsec, tz, result);
|
|
AdjustTimeForTypmod(&(result->time), typmod);
|
|
|
|
PG_RETURN_TIMETZADT_P(result);
|
|
}
|
|
|
|
Datum
|
|
timetz_out(PG_FUNCTION_ARGS)
|
|
{
|
|
TimeTzADT *time = PG_GETARG_TIMETZADT_P(0);
|
|
char *result;
|
|
struct pg_tm tt,
|
|
*tm = &tt;
|
|
fsec_t fsec;
|
|
int tz;
|
|
char buf[MAXDATELEN + 1];
|
|
|
|
timetz2tm(time, tm, &fsec, &tz);
|
|
EncodeTimeOnly(tm, fsec, true, tz, DateStyle, buf);
|
|
|
|
result = pstrdup(buf);
|
|
PG_RETURN_CSTRING(result);
|
|
}
|
|
|
|
/*
|
|
* timetz_recv - converts external binary format to timetz
|
|
*/
|
|
Datum
|
|
timetz_recv(PG_FUNCTION_ARGS)
|
|
{
|
|
StringInfo buf = (StringInfo) PG_GETARG_POINTER(0);
|
|
|
|
#ifdef NOT_USED
|
|
Oid typelem = PG_GETARG_OID(1);
|
|
#endif
|
|
int32 typmod = PG_GETARG_INT32(2);
|
|
TimeTzADT *result;
|
|
|
|
result = (TimeTzADT *) palloc(sizeof(TimeTzADT));
|
|
|
|
result->time = pq_getmsgint64(buf);
|
|
|
|
if (result->time < INT64CONST(0) || result->time > USECS_PER_DAY)
|
|
ereport(ERROR,
|
|
(errcode(ERRCODE_DATETIME_VALUE_OUT_OF_RANGE),
|
|
errmsg("time out of range")));
|
|
|
|
result->zone = pq_getmsgint(buf, sizeof(result->zone));
|
|
|
|
/* Check for sane GMT displacement; see notes in datatype/timestamp.h */
|
|
if (result->zone <= -TZDISP_LIMIT || result->zone >= TZDISP_LIMIT)
|
|
ereport(ERROR,
|
|
(errcode(ERRCODE_INVALID_TIME_ZONE_DISPLACEMENT_VALUE),
|
|
errmsg("time zone displacement out of range")));
|
|
|
|
AdjustTimeForTypmod(&(result->time), typmod);
|
|
|
|
PG_RETURN_TIMETZADT_P(result);
|
|
}
|
|
|
|
/*
|
|
* timetz_send - converts timetz to binary format
|
|
*/
|
|
Datum
|
|
timetz_send(PG_FUNCTION_ARGS)
|
|
{
|
|
TimeTzADT *time = PG_GETARG_TIMETZADT_P(0);
|
|
StringInfoData buf;
|
|
|
|
pq_begintypsend(&buf);
|
|
pq_sendint64(&buf, time->time);
|
|
pq_sendint32(&buf, time->zone);
|
|
PG_RETURN_BYTEA_P(pq_endtypsend(&buf));
|
|
}
|
|
|
|
Datum
|
|
timetztypmodin(PG_FUNCTION_ARGS)
|
|
{
|
|
ArrayType *ta = PG_GETARG_ARRAYTYPE_P(0);
|
|
|
|
PG_RETURN_INT32(anytime_typmodin(true, ta));
|
|
}
|
|
|
|
Datum
|
|
timetztypmodout(PG_FUNCTION_ARGS)
|
|
{
|
|
int32 typmod = PG_GETARG_INT32(0);
|
|
|
|
PG_RETURN_CSTRING(anytime_typmodout(true, typmod));
|
|
}
|
|
|
|
|
|
/* timetz2tm()
|
|
* Convert TIME WITH TIME ZONE data type to POSIX time structure.
|
|
*/
|
|
int
|
|
timetz2tm(TimeTzADT *time, struct pg_tm *tm, fsec_t *fsec, int *tzp)
|
|
{
|
|
TimeOffset trem = time->time;
|
|
|
|
tm->tm_hour = trem / USECS_PER_HOUR;
|
|
trem -= tm->tm_hour * USECS_PER_HOUR;
|
|
tm->tm_min = trem / USECS_PER_MINUTE;
|
|
trem -= tm->tm_min * USECS_PER_MINUTE;
|
|
tm->tm_sec = trem / USECS_PER_SEC;
|
|
*fsec = trem - tm->tm_sec * USECS_PER_SEC;
|
|
|
|
if (tzp != NULL)
|
|
*tzp = time->zone;
|
|
|
|
return 0;
|
|
}
|
|
|
|
/* timetz_scale()
|
|
* Adjust time type for specified scale factor.
|
|
* Used by PostgreSQL type system to stuff columns.
|
|
*/
|
|
Datum
|
|
timetz_scale(PG_FUNCTION_ARGS)
|
|
{
|
|
TimeTzADT *time = PG_GETARG_TIMETZADT_P(0);
|
|
int32 typmod = PG_GETARG_INT32(1);
|
|
TimeTzADT *result;
|
|
|
|
result = (TimeTzADT *) palloc(sizeof(TimeTzADT));
|
|
|
|
result->time = time->time;
|
|
result->zone = time->zone;
|
|
|
|
AdjustTimeForTypmod(&(result->time), typmod);
|
|
|
|
PG_RETURN_TIMETZADT_P(result);
|
|
}
|
|
|
|
|
|
static int
|
|
timetz_cmp_internal(TimeTzADT *time1, TimeTzADT *time2)
|
|
{
|
|
TimeOffset t1,
|
|
t2;
|
|
|
|
/* Primary sort is by true (GMT-equivalent) time */
|
|
t1 = time1->time + (time1->zone * USECS_PER_SEC);
|
|
t2 = time2->time + (time2->zone * USECS_PER_SEC);
|
|
|
|
if (t1 > t2)
|
|
return 1;
|
|
if (t1 < t2)
|
|
return -1;
|
|
|
|
/*
|
|
* If same GMT time, sort by timezone; we only want to say that two
|
|
* timetz's are equal if both the time and zone parts are equal.
|
|
*/
|
|
if (time1->zone > time2->zone)
|
|
return 1;
|
|
if (time1->zone < time2->zone)
|
|
return -1;
|
|
|
|
return 0;
|
|
}
|
|
|
|
Datum
|
|
timetz_eq(PG_FUNCTION_ARGS)
|
|
{
|
|
TimeTzADT *time1 = PG_GETARG_TIMETZADT_P(0);
|
|
TimeTzADT *time2 = PG_GETARG_TIMETZADT_P(1);
|
|
|
|
PG_RETURN_BOOL(timetz_cmp_internal(time1, time2) == 0);
|
|
}
|
|
|
|
Datum
|
|
timetz_ne(PG_FUNCTION_ARGS)
|
|
{
|
|
TimeTzADT *time1 = PG_GETARG_TIMETZADT_P(0);
|
|
TimeTzADT *time2 = PG_GETARG_TIMETZADT_P(1);
|
|
|
|
PG_RETURN_BOOL(timetz_cmp_internal(time1, time2) != 0);
|
|
}
|
|
|
|
Datum
|
|
timetz_lt(PG_FUNCTION_ARGS)
|
|
{
|
|
TimeTzADT *time1 = PG_GETARG_TIMETZADT_P(0);
|
|
TimeTzADT *time2 = PG_GETARG_TIMETZADT_P(1);
|
|
|
|
PG_RETURN_BOOL(timetz_cmp_internal(time1, time2) < 0);
|
|
}
|
|
|
|
Datum
|
|
timetz_le(PG_FUNCTION_ARGS)
|
|
{
|
|
TimeTzADT *time1 = PG_GETARG_TIMETZADT_P(0);
|
|
TimeTzADT *time2 = PG_GETARG_TIMETZADT_P(1);
|
|
|
|
PG_RETURN_BOOL(timetz_cmp_internal(time1, time2) <= 0);
|
|
}
|
|
|
|
Datum
|
|
timetz_gt(PG_FUNCTION_ARGS)
|
|
{
|
|
TimeTzADT *time1 = PG_GETARG_TIMETZADT_P(0);
|
|
TimeTzADT *time2 = PG_GETARG_TIMETZADT_P(1);
|
|
|
|
PG_RETURN_BOOL(timetz_cmp_internal(time1, time2) > 0);
|
|
}
|
|
|
|
Datum
|
|
timetz_ge(PG_FUNCTION_ARGS)
|
|
{
|
|
TimeTzADT *time1 = PG_GETARG_TIMETZADT_P(0);
|
|
TimeTzADT *time2 = PG_GETARG_TIMETZADT_P(1);
|
|
|
|
PG_RETURN_BOOL(timetz_cmp_internal(time1, time2) >= 0);
|
|
}
|
|
|
|
Datum
|
|
timetz_cmp(PG_FUNCTION_ARGS)
|
|
{
|
|
TimeTzADT *time1 = PG_GETARG_TIMETZADT_P(0);
|
|
TimeTzADT *time2 = PG_GETARG_TIMETZADT_P(1);
|
|
|
|
PG_RETURN_INT32(timetz_cmp_internal(time1, time2));
|
|
}
|
|
|
|
Datum
|
|
timetz_hash(PG_FUNCTION_ARGS)
|
|
{
|
|
TimeTzADT *key = PG_GETARG_TIMETZADT_P(0);
|
|
uint32 thash;
|
|
|
|
/*
|
|
* To avoid any problems with padding bytes in the struct, we figure the
|
|
* field hashes separately and XOR them.
|
|
*/
|
|
thash = DatumGetUInt32(DirectFunctionCall1(hashint8,
|
|
Int64GetDatumFast(key->time)));
|
|
thash ^= DatumGetUInt32(hash_uint32(key->zone));
|
|
PG_RETURN_UINT32(thash);
|
|
}
|
|
|
|
Datum
|
|
timetz_hash_extended(PG_FUNCTION_ARGS)
|
|
{
|
|
TimeTzADT *key = PG_GETARG_TIMETZADT_P(0);
|
|
Datum seed = PG_GETARG_DATUM(1);
|
|
uint64 thash;
|
|
|
|
/* Same approach as timetz_hash */
|
|
thash = DatumGetUInt64(DirectFunctionCall2(hashint8extended,
|
|
Int64GetDatumFast(key->time),
|
|
seed));
|
|
thash ^= DatumGetUInt64(hash_uint32_extended(key->zone,
|
|
DatumGetInt64(seed)));
|
|
PG_RETURN_UINT64(thash);
|
|
}
|
|
|
|
Datum
|
|
timetz_larger(PG_FUNCTION_ARGS)
|
|
{
|
|
TimeTzADT *time1 = PG_GETARG_TIMETZADT_P(0);
|
|
TimeTzADT *time2 = PG_GETARG_TIMETZADT_P(1);
|
|
TimeTzADT *result;
|
|
|
|
if (timetz_cmp_internal(time1, time2) > 0)
|
|
result = time1;
|
|
else
|
|
result = time2;
|
|
PG_RETURN_TIMETZADT_P(result);
|
|
}
|
|
|
|
Datum
|
|
timetz_smaller(PG_FUNCTION_ARGS)
|
|
{
|
|
TimeTzADT *time1 = PG_GETARG_TIMETZADT_P(0);
|
|
TimeTzADT *time2 = PG_GETARG_TIMETZADT_P(1);
|
|
TimeTzADT *result;
|
|
|
|
if (timetz_cmp_internal(time1, time2) < 0)
|
|
result = time1;
|
|
else
|
|
result = time2;
|
|
PG_RETURN_TIMETZADT_P(result);
|
|
}
|
|
|
|
/* timetz_pl_interval()
|
|
* Add interval to timetz.
|
|
*/
|
|
Datum
|
|
timetz_pl_interval(PG_FUNCTION_ARGS)
|
|
{
|
|
TimeTzADT *time = PG_GETARG_TIMETZADT_P(0);
|
|
Interval *span = PG_GETARG_INTERVAL_P(1);
|
|
TimeTzADT *result;
|
|
|
|
result = (TimeTzADT *) palloc(sizeof(TimeTzADT));
|
|
|
|
result->time = time->time + span->time;
|
|
result->time -= result->time / USECS_PER_DAY * USECS_PER_DAY;
|
|
if (result->time < INT64CONST(0))
|
|
result->time += USECS_PER_DAY;
|
|
|
|
result->zone = time->zone;
|
|
|
|
PG_RETURN_TIMETZADT_P(result);
|
|
}
|
|
|
|
/* timetz_mi_interval()
|
|
* Subtract interval from timetz.
|
|
*/
|
|
Datum
|
|
timetz_mi_interval(PG_FUNCTION_ARGS)
|
|
{
|
|
TimeTzADT *time = PG_GETARG_TIMETZADT_P(0);
|
|
Interval *span = PG_GETARG_INTERVAL_P(1);
|
|
TimeTzADT *result;
|
|
|
|
result = (TimeTzADT *) palloc(sizeof(TimeTzADT));
|
|
|
|
result->time = time->time - span->time;
|
|
result->time -= result->time / USECS_PER_DAY * USECS_PER_DAY;
|
|
if (result->time < INT64CONST(0))
|
|
result->time += USECS_PER_DAY;
|
|
|
|
result->zone = time->zone;
|
|
|
|
PG_RETURN_TIMETZADT_P(result);
|
|
}
|
|
|
|
/*
|
|
* in_range support function for timetz.
|
|
*/
|
|
Datum
|
|
in_range_timetz_interval(PG_FUNCTION_ARGS)
|
|
{
|
|
TimeTzADT *val = PG_GETARG_TIMETZADT_P(0);
|
|
TimeTzADT *base = PG_GETARG_TIMETZADT_P(1);
|
|
Interval *offset = PG_GETARG_INTERVAL_P(2);
|
|
bool sub = PG_GETARG_BOOL(3);
|
|
bool less = PG_GETARG_BOOL(4);
|
|
TimeTzADT sum;
|
|
|
|
/*
|
|
* Like timetz_pl_interval/timetz_mi_interval, we disregard the month and
|
|
* day fields of the offset. So our test for negative should too.
|
|
*/
|
|
if (offset->time < 0)
|
|
ereport(ERROR,
|
|
(errcode(ERRCODE_INVALID_PRECEDING_OR_FOLLOWING_SIZE),
|
|
errmsg("invalid preceding or following size in window function")));
|
|
|
|
/*
|
|
* We can't use timetz_pl_interval/timetz_mi_interval here, because their
|
|
* wraparound behavior would give wrong (or at least undesirable) answers.
|
|
* Fortunately the equivalent non-wrapping behavior is trivial, especially
|
|
* since we don't worry about integer overflow.
|
|
*/
|
|
if (sub)
|
|
sum.time = base->time - offset->time;
|
|
else
|
|
sum.time = base->time + offset->time;
|
|
sum.zone = base->zone;
|
|
|
|
if (less)
|
|
PG_RETURN_BOOL(timetz_cmp_internal(val, &sum) <= 0);
|
|
else
|
|
PG_RETURN_BOOL(timetz_cmp_internal(val, &sum) >= 0);
|
|
}
|
|
|
|
/* overlaps_timetz() --- implements the SQL OVERLAPS operator.
|
|
*
|
|
* Algorithm is per SQL spec. This is much harder than you'd think
|
|
* because the spec requires us to deliver a non-null answer in some cases
|
|
* where some of the inputs are null.
|
|
*/
|
|
Datum
|
|
overlaps_timetz(PG_FUNCTION_ARGS)
|
|
{
|
|
/*
|
|
* The arguments are TimeTzADT *, but we leave them as generic Datums for
|
|
* convenience of notation --- and to avoid dereferencing nulls.
|
|
*/
|
|
Datum ts1 = PG_GETARG_DATUM(0);
|
|
Datum te1 = PG_GETARG_DATUM(1);
|
|
Datum ts2 = PG_GETARG_DATUM(2);
|
|
Datum te2 = PG_GETARG_DATUM(3);
|
|
bool ts1IsNull = PG_ARGISNULL(0);
|
|
bool te1IsNull = PG_ARGISNULL(1);
|
|
bool ts2IsNull = PG_ARGISNULL(2);
|
|
bool te2IsNull = PG_ARGISNULL(3);
|
|
|
|
#define TIMETZ_GT(t1,t2) \
|
|
DatumGetBool(DirectFunctionCall2(timetz_gt,t1,t2))
|
|
#define TIMETZ_LT(t1,t2) \
|
|
DatumGetBool(DirectFunctionCall2(timetz_lt,t1,t2))
|
|
|
|
/*
|
|
* If both endpoints of interval 1 are null, the result is null (unknown).
|
|
* If just one endpoint is null, take ts1 as the non-null one. Otherwise,
|
|
* take ts1 as the lesser endpoint.
|
|
*/
|
|
if (ts1IsNull)
|
|
{
|
|
if (te1IsNull)
|
|
PG_RETURN_NULL();
|
|
/* swap null for non-null */
|
|
ts1 = te1;
|
|
te1IsNull = true;
|
|
}
|
|
else if (!te1IsNull)
|
|
{
|
|
if (TIMETZ_GT(ts1, te1))
|
|
{
|
|
Datum tt = ts1;
|
|
|
|
ts1 = te1;
|
|
te1 = tt;
|
|
}
|
|
}
|
|
|
|
/* Likewise for interval 2. */
|
|
if (ts2IsNull)
|
|
{
|
|
if (te2IsNull)
|
|
PG_RETURN_NULL();
|
|
/* swap null for non-null */
|
|
ts2 = te2;
|
|
te2IsNull = true;
|
|
}
|
|
else if (!te2IsNull)
|
|
{
|
|
if (TIMETZ_GT(ts2, te2))
|
|
{
|
|
Datum tt = ts2;
|
|
|
|
ts2 = te2;
|
|
te2 = tt;
|
|
}
|
|
}
|
|
|
|
/*
|
|
* At this point neither ts1 nor ts2 is null, so we can consider three
|
|
* cases: ts1 > ts2, ts1 < ts2, ts1 = ts2
|
|
*/
|
|
if (TIMETZ_GT(ts1, ts2))
|
|
{
|
|
/*
|
|
* This case is ts1 < te2 OR te1 < te2, which may look redundant but
|
|
* in the presence of nulls it's not quite completely so.
|
|
*/
|
|
if (te2IsNull)
|
|
PG_RETURN_NULL();
|
|
if (TIMETZ_LT(ts1, te2))
|
|
PG_RETURN_BOOL(true);
|
|
if (te1IsNull)
|
|
PG_RETURN_NULL();
|
|
|
|
/*
|
|
* If te1 is not null then we had ts1 <= te1 above, and we just found
|
|
* ts1 >= te2, hence te1 >= te2.
|
|
*/
|
|
PG_RETURN_BOOL(false);
|
|
}
|
|
else if (TIMETZ_LT(ts1, ts2))
|
|
{
|
|
/* This case is ts2 < te1 OR te2 < te1 */
|
|
if (te1IsNull)
|
|
PG_RETURN_NULL();
|
|
if (TIMETZ_LT(ts2, te1))
|
|
PG_RETURN_BOOL(true);
|
|
if (te2IsNull)
|
|
PG_RETURN_NULL();
|
|
|
|
/*
|
|
* If te2 is not null then we had ts2 <= te2 above, and we just found
|
|
* ts2 >= te1, hence te2 >= te1.
|
|
*/
|
|
PG_RETURN_BOOL(false);
|
|
}
|
|
else
|
|
{
|
|
/*
|
|
* For ts1 = ts2 the spec says te1 <> te2 OR te1 = te2, which is a
|
|
* rather silly way of saying "true if both are nonnull, else null".
|
|
*/
|
|
if (te1IsNull || te2IsNull)
|
|
PG_RETURN_NULL();
|
|
PG_RETURN_BOOL(true);
|
|
}
|
|
|
|
#undef TIMETZ_GT
|
|
#undef TIMETZ_LT
|
|
}
|
|
|
|
|
|
Datum
|
|
timetz_time(PG_FUNCTION_ARGS)
|
|
{
|
|
TimeTzADT *timetz = PG_GETARG_TIMETZADT_P(0);
|
|
TimeADT result;
|
|
|
|
/* swallow the time zone and just return the time */
|
|
result = timetz->time;
|
|
|
|
PG_RETURN_TIMEADT(result);
|
|
}
|
|
|
|
|
|
Datum
|
|
time_timetz(PG_FUNCTION_ARGS)
|
|
{
|
|
TimeADT time = PG_GETARG_TIMEADT(0);
|
|
TimeTzADT *result;
|
|
struct pg_tm tt,
|
|
*tm = &tt;
|
|
fsec_t fsec;
|
|
int tz;
|
|
|
|
GetCurrentDateTime(tm);
|
|
time2tm(time, tm, &fsec);
|
|
tz = DetermineTimeZoneOffset(tm, session_timezone);
|
|
|
|
result = (TimeTzADT *) palloc(sizeof(TimeTzADT));
|
|
|
|
result->time = time;
|
|
result->zone = tz;
|
|
|
|
PG_RETURN_TIMETZADT_P(result);
|
|
}
|
|
|
|
|
|
/* timestamptz_timetz()
|
|
* Convert timestamp to timetz data type.
|
|
*/
|
|
Datum
|
|
timestamptz_timetz(PG_FUNCTION_ARGS)
|
|
{
|
|
TimestampTz timestamp = PG_GETARG_TIMESTAMP(0);
|
|
TimeTzADT *result;
|
|
struct pg_tm tt,
|
|
*tm = &tt;
|
|
int tz;
|
|
fsec_t fsec;
|
|
|
|
if (TIMESTAMP_NOT_FINITE(timestamp))
|
|
PG_RETURN_NULL();
|
|
|
|
if (timestamp2tm(timestamp, &tz, tm, &fsec, NULL, NULL) != 0)
|
|
ereport(ERROR,
|
|
(errcode(ERRCODE_DATETIME_VALUE_OUT_OF_RANGE),
|
|
errmsg("timestamp out of range")));
|
|
|
|
result = (TimeTzADT *) palloc(sizeof(TimeTzADT));
|
|
|
|
tm2timetz(tm, fsec, tz, result);
|
|
|
|
PG_RETURN_TIMETZADT_P(result);
|
|
}
|
|
|
|
|
|
/* datetimetz_timestamptz()
|
|
* Convert date and timetz to timestamp with time zone data type.
|
|
* Timestamp is stored in GMT, so add the time zone
|
|
* stored with the timetz to the result.
|
|
* - thomas 2000-03-10
|
|
*/
|
|
Datum
|
|
datetimetz_timestamptz(PG_FUNCTION_ARGS)
|
|
{
|
|
DateADT date = PG_GETARG_DATEADT(0);
|
|
TimeTzADT *time = PG_GETARG_TIMETZADT_P(1);
|
|
TimestampTz result;
|
|
|
|
if (DATE_IS_NOBEGIN(date))
|
|
TIMESTAMP_NOBEGIN(result);
|
|
else if (DATE_IS_NOEND(date))
|
|
TIMESTAMP_NOEND(result);
|
|
else
|
|
{
|
|
/*
|
|
* Date's range is wider than timestamp's, so check for boundaries.
|
|
* Since dates have the same minimum values as timestamps, only upper
|
|
* boundary need be checked for overflow.
|
|
*/
|
|
if (date >= (TIMESTAMP_END_JULIAN - POSTGRES_EPOCH_JDATE))
|
|
ereport(ERROR,
|
|
(errcode(ERRCODE_DATETIME_VALUE_OUT_OF_RANGE),
|
|
errmsg("date out of range for timestamp")));
|
|
result = date * USECS_PER_DAY + time->time + time->zone * USECS_PER_SEC;
|
|
|
|
/*
|
|
* Since it is possible to go beyond allowed timestamptz range because
|
|
* of time zone, check for allowed timestamp range after adding tz.
|
|
*/
|
|
if (!IS_VALID_TIMESTAMP(result))
|
|
ereport(ERROR,
|
|
(errcode(ERRCODE_DATETIME_VALUE_OUT_OF_RANGE),
|
|
errmsg("date out of range for timestamp")));
|
|
}
|
|
|
|
PG_RETURN_TIMESTAMP(result);
|
|
}
|
|
|
|
|
|
/* timetz_part()
|
|
* Extract specified field from time type.
|
|
*/
|
|
Datum
|
|
timetz_part(PG_FUNCTION_ARGS)
|
|
{
|
|
text *units = PG_GETARG_TEXT_PP(0);
|
|
TimeTzADT *time = PG_GETARG_TIMETZADT_P(1);
|
|
float8 result;
|
|
int type,
|
|
val;
|
|
char *lowunits;
|
|
|
|
lowunits = downcase_truncate_identifier(VARDATA_ANY(units),
|
|
VARSIZE_ANY_EXHDR(units),
|
|
false);
|
|
|
|
type = DecodeUnits(0, lowunits, &val);
|
|
if (type == UNKNOWN_FIELD)
|
|
type = DecodeSpecial(0, lowunits, &val);
|
|
|
|
if (type == UNITS)
|
|
{
|
|
double dummy;
|
|
int tz;
|
|
fsec_t fsec;
|
|
struct pg_tm tt,
|
|
*tm = &tt;
|
|
|
|
timetz2tm(time, tm, &fsec, &tz);
|
|
|
|
switch (val)
|
|
{
|
|
case DTK_TZ:
|
|
result = -tz;
|
|
break;
|
|
|
|
case DTK_TZ_MINUTE:
|
|
result = -tz;
|
|
result /= SECS_PER_MINUTE;
|
|
FMODULO(result, dummy, (double) SECS_PER_MINUTE);
|
|
break;
|
|
|
|
case DTK_TZ_HOUR:
|
|
dummy = -tz;
|
|
FMODULO(dummy, result, (double) SECS_PER_HOUR);
|
|
break;
|
|
|
|
case DTK_MICROSEC:
|
|
result = tm->tm_sec * 1000000.0 + fsec;
|
|
break;
|
|
|
|
case DTK_MILLISEC:
|
|
result = tm->tm_sec * 1000.0 + fsec / 1000.0;
|
|
break;
|
|
|
|
case DTK_SECOND:
|
|
result = tm->tm_sec + fsec / 1000000.0;
|
|
break;
|
|
|
|
case DTK_MINUTE:
|
|
result = tm->tm_min;
|
|
break;
|
|
|
|
case DTK_HOUR:
|
|
result = tm->tm_hour;
|
|
break;
|
|
|
|
case DTK_DAY:
|
|
case DTK_MONTH:
|
|
case DTK_QUARTER:
|
|
case DTK_YEAR:
|
|
case DTK_DECADE:
|
|
case DTK_CENTURY:
|
|
case DTK_MILLENNIUM:
|
|
default:
|
|
ereport(ERROR,
|
|
(errcode(ERRCODE_INVALID_PARAMETER_VALUE),
|
|
errmsg("\"time with time zone\" units \"%s\" not recognized",
|
|
lowunits)));
|
|
result = 0;
|
|
}
|
|
}
|
|
else if (type == RESERV && val == DTK_EPOCH)
|
|
{
|
|
result = time->time / 1000000.0 + time->zone;
|
|
}
|
|
else
|
|
{
|
|
ereport(ERROR,
|
|
(errcode(ERRCODE_INVALID_PARAMETER_VALUE),
|
|
errmsg("\"time with time zone\" units \"%s\" not recognized",
|
|
lowunits)));
|
|
result = 0;
|
|
}
|
|
|
|
PG_RETURN_FLOAT8(result);
|
|
}
|
|
|
|
/* timetz_zone()
|
|
* Encode time with time zone type with specified time zone.
|
|
* Applies DST rules as of the current date.
|
|
*/
|
|
Datum
|
|
timetz_zone(PG_FUNCTION_ARGS)
|
|
{
|
|
text *zone = PG_GETARG_TEXT_PP(0);
|
|
TimeTzADT *t = PG_GETARG_TIMETZADT_P(1);
|
|
TimeTzADT *result;
|
|
int tz;
|
|
char tzname[TZ_STRLEN_MAX + 1];
|
|
char *lowzone;
|
|
int type,
|
|
val;
|
|
pg_tz *tzp;
|
|
|
|
/*
|
|
* Look up the requested timezone. First we look in the timezone
|
|
* abbreviation table (to handle cases like "EST"), and if that fails, we
|
|
* look in the timezone database (to handle cases like
|
|
* "America/New_York"). (This matches the order in which timestamp input
|
|
* checks the cases; it's important because the timezone database unwisely
|
|
* uses a few zone names that are identical to offset abbreviations.)
|
|
*/
|
|
text_to_cstring_buffer(zone, tzname, sizeof(tzname));
|
|
|
|
/* DecodeTimezoneAbbrev requires lowercase input */
|
|
lowzone = downcase_truncate_identifier(tzname,
|
|
strlen(tzname),
|
|
false);
|
|
|
|
type = DecodeTimezoneAbbrev(0, lowzone, &val, &tzp);
|
|
|
|
if (type == TZ || type == DTZ)
|
|
{
|
|
/* fixed-offset abbreviation */
|
|
tz = -val;
|
|
}
|
|
else if (type == DYNTZ)
|
|
{
|
|
/* dynamic-offset abbreviation, resolve using current time */
|
|
pg_time_t now = (pg_time_t) time(NULL);
|
|
struct pg_tm *tm;
|
|
|
|
tm = pg_localtime(&now, tzp);
|
|
tz = DetermineTimeZoneAbbrevOffset(tm, tzname, tzp);
|
|
}
|
|
else
|
|
{
|
|
/* try it as a full zone name */
|
|
tzp = pg_tzset(tzname);
|
|
if (tzp)
|
|
{
|
|
/* Get the offset-from-GMT that is valid today for the zone */
|
|
pg_time_t now = (pg_time_t) time(NULL);
|
|
struct pg_tm *tm;
|
|
|
|
tm = pg_localtime(&now, tzp);
|
|
tz = -tm->tm_gmtoff;
|
|
}
|
|
else
|
|
{
|
|
ereport(ERROR,
|
|
(errcode(ERRCODE_INVALID_PARAMETER_VALUE),
|
|
errmsg("time zone \"%s\" not recognized", tzname)));
|
|
tz = 0; /* keep compiler quiet */
|
|
}
|
|
}
|
|
|
|
result = (TimeTzADT *) palloc(sizeof(TimeTzADT));
|
|
|
|
result->time = t->time + (t->zone - tz) * USECS_PER_SEC;
|
|
while (result->time < INT64CONST(0))
|
|
result->time += USECS_PER_DAY;
|
|
while (result->time >= USECS_PER_DAY)
|
|
result->time -= USECS_PER_DAY;
|
|
|
|
result->zone = tz;
|
|
|
|
PG_RETURN_TIMETZADT_P(result);
|
|
}
|
|
|
|
/* timetz_izone()
|
|
* Encode time with time zone type with specified time interval as time zone.
|
|
*/
|
|
Datum
|
|
timetz_izone(PG_FUNCTION_ARGS)
|
|
{
|
|
Interval *zone = PG_GETARG_INTERVAL_P(0);
|
|
TimeTzADT *time = PG_GETARG_TIMETZADT_P(1);
|
|
TimeTzADT *result;
|
|
int tz;
|
|
|
|
if (zone->month != 0 || zone->day != 0)
|
|
ereport(ERROR,
|
|
(errcode(ERRCODE_INVALID_PARAMETER_VALUE),
|
|
errmsg("interval time zone \"%s\" must not include months or days",
|
|
DatumGetCString(DirectFunctionCall1(interval_out,
|
|
PointerGetDatum(zone))))));
|
|
|
|
tz = -(zone->time / USECS_PER_SEC);
|
|
|
|
result = (TimeTzADT *) palloc(sizeof(TimeTzADT));
|
|
|
|
result->time = time->time + (time->zone - tz) * USECS_PER_SEC;
|
|
while (result->time < INT64CONST(0))
|
|
result->time += USECS_PER_DAY;
|
|
while (result->time >= USECS_PER_DAY)
|
|
result->time -= USECS_PER_DAY;
|
|
|
|
result->zone = tz;
|
|
|
|
PG_RETURN_TIMETZADT_P(result);
|
|
}
|