Index: doc/src/sgml/func.sgml
===================================================================
RCS file: /projects/cvsroot/pgsql-server/doc/src/sgml/func.sgml,v
retrieving revision 1.182
diff -u -r1.182 func.sgml
--- doc/src/sgml/func.sgml 16 Dec 2003 15:27:58 -0000 1.182
+++ doc/src/sgml/func.sgml 18 Dec 2003 15:29:28 -0000
@@ -3981,6 +3981,10 @@
last digit of year
+ IYYYY
+ ISO year (The first Thursday of the new year is in week 1.)
+
+
BC or B.C. or
AD or A.D.
era indicator (upper case)
Index: src/include/utils/timestamp.h
===================================================================
RCS file: /projects/cvsroot/pgsql-server/src/include/utils/timestamp.h,v
retrieving revision 1.32
diff -u -r1.32 timestamp.h
--- src/include/utils/timestamp.h 29 Nov 2003 22:41:16 -0000 1.32
+++ src/include/utils/timestamp.h 18 Dec 2003 15:29:28 -0000
@@ -248,5 +248,6 @@
extern void isoweek2date(int woy, int *year, int *mon, int *mday);
extern int date2isoweek(int year, int mon, int mday);
+extern int date2isoyear(int year, int mon, int mday);
#endif /* TIMESTAMP_H */
Index: src/backend/utils/adt/formatting.c
===================================================================
RCS file: /projects/cvsroot/pgsql-server/src/backend/utils/adt/formatting.c,v
retrieving revision 1.70
diff -u -r1.70 formatting.c
--- src/backend/utils/adt/formatting.c 29 Nov 2003 19:51:58 -0000 1.70
+++ src/backend/utils/adt/formatting.c 18 Dec 2003 15:29:30 -0000
@@ -544,6 +544,7 @@
DCH_WW,
DCH_W,
DCH_Y_YYY,
+ DCH_IYYYY,
DCH_YYYY,
DCH_YYY,
DCH_YY,
@@ -582,6 +583,7 @@
DCH_ww,
DCH_w,
DCH_y_yyy,
+ DCH_iyyyy,
DCH_yyyy,
DCH_yyy,
DCH_yy,
@@ -659,6 +661,7 @@
{"HH12", 4, dch_time, DCH_HH12, TRUE},
{"HH", 2, dch_time, DCH_HH, TRUE},
{"IW", 2, dch_date, DCH_IW, TRUE}, /* I */
+ {"IYYYY", 5, dch_date, DCH_IYYYY, TRUE},
{"J", 1, dch_date, DCH_J, TRUE}, /* J */
{"MI", 2, dch_time, DCH_MI, TRUE},
{"MM", 2, dch_date, DCH_MM, TRUE},
@@ -699,6 +702,7 @@
{"hh12", 4, dch_time, DCH_HH12, TRUE},
{"hh", 2, dch_time, DCH_HH, TRUE},
{"iw", 2, dch_date, DCH_IW, TRUE}, /* i */
+ {"iyyyy", 5, dch_date, DCH_IYYYY, TRUE},
{"j", 1, dch_time, DCH_J, TRUE}, /* j */
{"mi", 2, dch_time, DCH_MI, TRUE}, /* m */
{"mm", 2, dch_date, DCH_MM, TRUE},
@@ -2444,6 +2448,41 @@
tmfc->year += (cc * 1000);
return strdigits_len(inout) + 3 + SKIP_THth(suf);
+ }
+ break;
+ case DCH_IYYYY:
+ if (flag == TO_CHAR)
+ {
+ if (tm->tm_year <= 9999 && tm->tm_year >= -9998)
+ sprintf(inout, "%0*d",
+ S_FM(suf) ? 0 : 4,
+ YEAR_ABS(date2isoyear(
+ tm->tm_year,
+ tm->tm_mon,
+ tm->tm_mday)));
+ else
+ sprintf(inout, "%d",
+ YEAR_ABS(date2isoyear(
+ tm->tm_year,
+ tm->tm_mon,
+ tm->tm_mday)));
+
+ if (S_THth(suf))
+ str_numth(p_inout, inout, S_TH_TYPE(suf));
+ return strlen(p_inout) - 1;
+ }
+ else if (flag == FROM_CHAR)
+ {
+ if (S_FM(suf) || is_next_separator(node))
+ {
+ sscanf(inout, "%d", &tmfc->year);
+ return strdigits_len(inout) - 1 + SKIP_THth(suf);
+ }
+ else
+ {
+ sscanf(inout, "%04d", &tmfc->year);
+ return 3 + SKIP_THth(suf);
+ }
}
break;
case DCH_YYYY:
Index: src/backend/utils/adt/timestamp.c
===================================================================
RCS file: /projects/cvsroot/pgsql-server/src/backend/utils/adt/timestamp.c,v
retrieving revision 1.97
diff -u -r1.97 timestamp.c
--- src/backend/utils/adt/timestamp.c 29 Nov 2003 19:51:59 -0000 1.97
+++ src/backend/utils/adt/timestamp.c 18 Dec 2003 15:29:31 -0000
@@ -2840,7 +2840,7 @@
/* isoweek2date()
* Convert ISO week of year number to date.
- * The year field must be specified!
+ * The year field must be specified with the ISO year!
* karel 2000/08/07
*/
void
@@ -2917,6 +2917,64 @@
}
return (int) result;
+}
+
+
+/* date2isoyear()
+ *
+ * Returns ISO 8601 year number.
+ */
+int
+date2isoyear(int year, int mon, int mday)
+{
+ float8 result;
+ int day0,
+ day4,
+ dayn;
+
+ /* current day */
+ dayn = date2j(year, mon, mday);
+
+ /* fourth day of current year */
+ day4 = date2j(year, 1, 4);
+
+ /* day0 == offset to first day of week (Monday) */
+ day0 = j2day(day4 - 1);
+
+ /*
+ * We need the first week containing a Thursday, otherwise this day
+ * falls into the previous year for purposes of counting weeks
+ */
+ if (dayn < (day4 - day0))
+ {
+ day4 = date2j(year - 1, 1, 4);
+
+ /* day0 == offset to first day of week (Monday) */
+ day0 = j2day(day4 - 1);
+
+ year--;
+ }
+
+ result = (((dayn - (day4 - day0)) / 7) + 1);
+
+ /*
+ * Sometimes the last few days in a year will fall into the first week
+ * of the next year, so check for this.
+ */
+ if (result >= 53)
+ {
+ day4 = date2j(year + 1, 1, 4);
+
+ /* day0 == offset to first day of week (Monday) */
+ day0 = j2day(day4 - 1);
+
+ if (dayn >= (day4 - day0))
+ {
+ year++;
+ }
+ }
+
+ return year;
}
Index: src/test/regress/expected/timestamptz.out
===================================================================
RCS file: /projects/cvsroot/pgsql-server/src/test/regress/expected/timestamptz.out,v
retrieving revision 1.13
diff -u -r1.13 timestamptz.out
--- src/test/regress/expected/timestamptz.out 25 Sep 2003 06:58:06 -0000 1.13
+++ src/test/regress/expected/timestamptz.out 18 Dec 2003 15:29:31 -0000
@@ -1317,6 +1317,76 @@
| 2001 A.D. 2001 a.d. 2001 ad 05:32:01 P.M. 05:32:01 p.m. 05:32:01 pm
(64 rows)
+SELECT '' AS to_char_10, to_char(d1, 'YYYY WW IYYYY IW')
+ FROM TIMESTAMPTZ_TBL;
+ to_char_10 | to_char
+------------+-----------------
+ |
+ |
+ | 1969 53 1970 01
+ | 1997 06 1997 07
+ | 1997 06 1997 07
+ | 1997 06 1997 07
+ | 1997 06 1997 07
+ | 1997 06 1997 07
+ | 1997 06 1997 07
+ | 1997 01 1997 01
+ | 1997 01 1997 01
+ | 1997 06 1997 07
+ | 1997 06 1997 07
+ | 1997 06 1997 07
+ | 1997 06 1997 07
+ | 1997 23 1997 24
+ | 2001 38 2001 38
+ | 2000 11 2000 11
+ | 2000 11 2000 11
+ | 2000 11 2000 11
+ | 2000 11 2000 11
+ | 2000 11 2000 11
+ | 1997 06 1997 07
+ | 1997 06 1997 07
+ | 1997 06 1997 07
+ | 1997 06 1997 07
+ | 1997 06 1997 07
+ | 1997 06 1997 07
+ | 1997 06 1997 07
+ | 1997 06 1997 07
+ | 1997 06 1997 07
+ | 1997 06 1997 07
+ | 1997 06 1997 07
+ | 1997 23 1997 24
+ | 1997 06 1997 07
+ | 1997 06 1997 07
+ | 1997 07 1997 07
+ | 1997 07 1997 07
+ | 1997 07 1997 07
+ | 1997 07 1997 07
+ | 1997 07 1997 07
+ | 0097 07 0097 07
+ | 0097 07 0097 07
+ | 0597 07 0597 07
+ | 1097 07 1097 07
+ | 1697 07 1697 07
+ | 1797 07 1797 07
+ | 1897 07 1897 07
+ | 1997 07 1997 07
+ | 2097 07 2097 07
+ | 1996 09 1996 09
+ | 1996 09 1996 09
+ | 1996 09 1996 09
+ | 1996 53 1997 01
+ | 1996 53 1997 01
+ | 1997 01 1997 01
+ | 1997 09 1997 09
+ | 1997 09 1997 09
+ | 1997 52 1998 01
+ | 1997 53 1998 01
+ | 1999 53 1999 52
+ | 2000 01 1999 52
+ | 2000 53 2000 52
+ | 2001 01 2001 01
+(64 rows)
+
-- TO_TIMESTAMP()
SELECT '' AS to_timestamp_1, to_timestamp('0097/Feb/16 --> 08:14:30', 'YYYY/Mon/DD --> HH:MI:SS');
to_timestamp_1 | to_timestamp
@@ -1400,6 +1470,18 @@
to_timestamp_14 | to_timestamp
-----------------+------------------------------
| Thu Nov 16 00:00:00 1995 PST
+(1 row)
+
+SELECT '' AS to_timestamp_15, to_timestamp('200401', 'IYYYYIW');
+ to_timestamp_15 | to_timestamp
+-----------------+------------------------------
+ | Mon Dec 29 00:00:00 2003 PST
+(1 row)
+
+SELECT '' AS to_timestamp_16, to_timestamp('200401', 'YYYYWW');
+ to_timestamp_16 | to_timestamp
+-----------------+------------------------------
+ | Thu Jan 01 00:00:00 2004 PST
(1 row)
SET DateStyle TO DEFAULT;
Index: src/test/regress/sql/timestamptz.sql
===================================================================
RCS file: /projects/cvsroot/pgsql-server/src/test/regress/sql/timestamptz.sql,v
retrieving revision 1.4
diff -u -r1.4 timestamptz.sql
--- src/test/regress/sql/timestamptz.sql 29 Jul 2003 00:03:19 -0000 1.4
+++ src/test/regress/sql/timestamptz.sql 18 Dec 2003 15:29:31 -0000
@@ -189,6 +189,9 @@
SELECT '' AS to_char_9, to_char(d1, 'YYYY A.D. YYYY a.d. YYYY bc HH:MI:SS P.M. HH:MI:SS p.m. HH:MI:SS pm')
FROM TIMESTAMPTZ_TBL;
+SELECT '' AS to_char_10, to_char(d1, 'YYYY WW IYYYY IW')
+ FROM TIMESTAMPTZ_TBL;
+
-- TO_TIMESTAMP()
SELECT '' AS to_timestamp_1, to_timestamp('0097/Feb/16 --> 08:14:30', 'YYYY/Mon/DD --> HH:MI:SS');
@@ -219,5 +222,10 @@
SELECT '' AS to_timestamp_13, to_timestamp('95-1116', 'YY-MMDD');
SELECT '' AS to_timestamp_14, to_timestamp('995-1116', 'YYY-MMDD');
+
+SELECT '' AS to_timestamp_15, to_timestamp('200401', 'IYYYYIW');
+
+SELECT '' AS to_timestamp_16, to_timestamp('200401', 'YYYYWW');
+
SET DateStyle TO DEFAULT;