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Remove gratuitous discrepancy between extract() and date_part(), 

regarding timezone_hour, timezone_minute vs. tz_hour, tz_minute.
Document the former.
This commit is contained in:
Peter Eisentraut 2001-10-10 00:02:42 +00:00
parent ec5c62874d
commit 371f49bf9f
4 changed files with 37 additions and 21 deletions
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36
doc/src/sgml/func.sgml
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@ -1,4 +1,4 @@
<!-- $Header: /cvsroot/pgsql/doc/src/sgml/func.sgml,v 1.76 2001/10/09 18:46:00 petere Exp $ -->
<!-- $Header: /cvsroot/pgsql/doc/src/sgml/func.sgml,v 1.77 2001/10/10 00:02:42 petere Exp $ -->
<chapter id="functions">
<title>Functions and Operators</title>
@ -2800,6 +2800,34 @@ SELECT EXTRACT(SECOND FROM TIME '17:12:28.5');
</informalexample>
</listitem>
</varlistentry>
<!--
<varlistentry>
<term><literal>timezone</literal></term>
<listitem>
<para>
The time zone offset. XXX But in what units?
</para>
</listitem>
</varlistentry>
-->
<varlistentry>
<term><literal>timezone_hour</literal></term>
<listitem>
<para>
The hour component of the time zone offset.
</para>
</listitem>
</varlistentry>
<varlistentry>
<term><literal>timezone_minute</literal></term>
<listitem>
<para>
The minute component of the time zone offset.
</para>
</listitem>
</varlistentry>
<varlistentry>
<term><literal>week</literal></term>
@ -2838,12 +2866,6 @@ SELECT EXTRACT(YEAR FROM TIMESTAMP '2001-02-16 20:38:40');
</listitem>
</varlistentry>
<!--
tz
tz_hour
tz_minute
-->
</variablelist>
</para>

10
src/backend/parser/gram.y
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@ -11,7 +11,7 @@
*
*
* IDENTIFICATION
* $Header: /cvsroot/pgsql/src/backend/parser/gram.y,v 2.261 2001/10/09 22:32:32 petere Exp $
* $Header: /cvsroot/pgsql/src/backend/parser/gram.y,v 2.262 2001/10/10 00:02:42 petere Exp $
*
* HISTORY
* AUTHOR DATE MAJOR EVENT
@ -315,8 +315,8 @@ static void doNegateFloat(Value *v);
PARTIAL, POSITION, PRECISION, PRIMARY, PRIOR, PRIVILEGES, PROCEDURE, PUBLIC,
READ, REFERENCES, RELATIVE, REVOKE, RIGHT, ROLLBACK,
SCHEMA, SCROLL, SECOND_P, SELECT, SESSION, SESSION_USER, SET, SOME, SUBSTRING,
TABLE, TEMPORARY, THEN, TIME, TIMESTAMP, TIMEZONE_HOUR,
TIMEZONE_MINUTE, TO, TRAILING, TRANSACTION, TRIM, TRUE_P,
TABLE, TEMPORARY, THEN, TIME, TIMESTAMP,
TO, TRAILING, TRANSACTION, TRIM, TRUE_P,
UNENCRYPTED, UNION, UNIQUE, UNKNOWN, UPDATE, USER, USING,
VALUES, VARCHAR, VARYING, VIEW,
WHEN, WHERE, WITH, WORK, YEAR_P, ZONE
@ -5200,8 +5200,6 @@ extract_list: extract_arg FROM a_expr
extract_arg: datetime { $$ = $1; }
| SCONST { $$ = $1; }
| IDENT { $$ = $1; }
| TIMEZONE_HOUR { $$ = "tz_hour"; }
| TIMEZONE_MINUTE { $$ = "tz_minute"; }
;
/* position_list uses b_expr not a_expr to avoid conflict with general IN */
@ -5738,8 +5736,6 @@ TokenId: ABSOLUTE { $$ = "absolute"; }
| TEMP { $$ = "temp"; }
| TEMPLATE { $$ = "template"; }
| TEMPORARY { $$ = "temporary"; }
| TIMEZONE_HOUR { $$ = "timezone_hour"; }
| TIMEZONE_MINUTE { $$ = "timezone_minute"; }
| TOAST { $$ = "toast"; }
| TRIGGER { $$ = "trigger"; }
| TRUNCATE { $$ = "truncate"; }

4
src/backend/parser/keywords.c
View File

@ -8,7 +8,7 @@
*
*
* IDENTIFICATION
* $Header: /cvsroot/pgsql/src/backend/parser/keywords.c,v 1.98 2001/10/02 21:39:35 tgl Exp $
* $Header: /cvsroot/pgsql/src/backend/parser/keywords.c,v 1.99 2001/10/10 00:02:42 petere Exp $
*
*-------------------------------------------------------------------------
*/
@ -252,8 +252,6 @@ static ScanKeyword ScanKeywords[] = {
{"then", THEN},
{"time", TIME},
{"timestamp", TIMESTAMP},
{"timezone_hour", TIMEZONE_HOUR},
{"timezone_minute", TIMEZONE_MINUTE},
{"to", TO},
{"toast", TOAST},
{"trailing", TRAILING},

8
src/backend/utils/adt/datetime.c
View File

@ -8,7 +8,7 @@
*
*
* IDENTIFICATION
* $Header: /cvsroot/pgsql/src/backend/utils/adt/datetime.c,v 1.70 2001/10/05 06:38:59 thomas Exp $
* $Header: /cvsroot/pgsql/src/backend/utils/adt/datetime.c,v 1.71 2001/10/10 00:02:42 petere Exp $
*
*-------------------------------------------------------------------------
*/
@ -293,9 +293,9 @@ static datetkn deltatktbl[] = {
{"seconds", UNITS, DTK_SECOND},
{"secs", UNITS, DTK_SECOND},
{DTIMEZONE, UNITS, DTK_TZ}, /* "timezone" time offset */
{"tz", UNITS, DTK_TZ}, /* "timezone" time offset */
{"tz_hour", UNITS, DTK_TZ_HOUR}, /* timezone hour units */
{"tz_minute", UNITS, DTK_TZ_MINUTE}, /* timezone minutes units */
{"timezone", UNITS, DTK_TZ}, /* "timezone" time offset */
{"timezone_hour", UNITS, DTK_TZ_HOUR}, /* timezone hour units */
{"timezone_minute", UNITS, DTK_TZ_MINUTE}, /* timezone minutes units */
{"undefined", RESERV, DTK_INVALID}, /* pre-v6.1 invalid time */
{"us", UNITS, DTK_MICROSEC},/* "microsecond" relative time units */
{"usec", UNITS, DTK_MICROSEC}, /* "microsecond" relative time