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Fix to_char for 1 BC. Previously it returned 1 AD.

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Fix to_char(year) for BC dates.  Previously it returned one less than
the current year.

Add documentation mentioning that there is no 0 AD.
This commit is contained in:
Bruce Momjian
2004-03-30 15:53:18 +00:00
parent f2c064afcb
commit fd071bd478
4 changed files with 19 additions and 15 deletions
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6
src/backend/utils/adt/datetime.c
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@ -8,7 +8,7 @@
*
*
* IDENTIFICATION
* $PostgreSQL: pgsql/src/backend/utils/adt/datetime.c,v 1.125 2004/02/25 19:41:23 momjian Exp $
* $PostgreSQL: pgsql/src/backend/utils/adt/datetime.c,v 1.126 2004/03/30 15:53:18 momjian Exp $
*
*-------------------------------------------------------------------------
*/
@ -93,7 +93,7 @@ static datetkn datetktbl[] = {
{"acsst", DTZ, POS(42)}, /* Cent. Australia */
{"acst", DTZ, NEG(16)}, /* Atlantic/Porto Acre Summer Time */
{"act", TZ, NEG(20)}, /* Atlantic/Porto Acre Time */
{DA_D, ADBC, AD}, /* "ad" for years >= 0 */
{DA_D, ADBC, AD}, /* "ad" for years > 0 */
{"adt", DTZ, NEG(12)}, /* Atlantic Daylight Time */
{"aesst", DTZ, POS(44)}, /* E. Australia */
{"aest", TZ, POS(40)}, /* Australia Eastern Std Time */
@ -139,7 +139,7 @@ static datetkn datetktbl[] = {
{"azot", TZ, NEG(4)}, /* Azores Time */
{"azst", DTZ, POS(20)}, /* Azerbaijan Summer Time */
{"azt", TZ, POS(16)}, /* Azerbaijan Time */
{DB_C, ADBC, BC}, /* "bc" for years < 0 */
{DB_C, ADBC, BC}, /* "bc" for years <= 0 */
{"bdst", TZ, POS(8)}, /* British Double Summer Time */
{"bdt", TZ, POS(24)}, /* Dacca */
{"bnt", TZ, POS(32)}, /* Brunei Darussalam Time */