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Commit68cb184

Browse files
author
Thomas G. Lockhart
committed
Update list of currently supported platforms.
Mention SQL9x precision syntax for date/time types.Use PostgreSQL consistantly throughout docs. Before, usage was split evenly between Postgres and PostgreSQL.
1 parentaa82ac8 commit68cb184

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6 files changed

+318
-178
lines changed

6 files changed

+318
-178
lines changed

‎doc/src/sgml/Makefile‎

Lines changed: 13 additions & 2 deletions
Original file line numberDiff line numberDiff line change
@@ -8,7 +8,7 @@
88
#
99
#
1010
# IDENTIFICATION
11-
# $Header: /cvsroot/pgsql/doc/src/sgml/Makefile,v 1.45 2001/11/18 20:35:02 petere Exp $
11+
# $Header: /cvsroot/pgsql/doc/src/sgml/Makefile,v 1.46 2001/12/08 03:24:21 thomas Exp $
1212
#
1313
#----------------------------------------------------------------------------
1414

@@ -96,16 +96,27 @@ programmer.html: catalogs.gif connections.gif
9696
postgres.html: catalogs.gif connections.gif
9797

9898

99-
COLLATEINDEX =$(PERL)$(DOCBOOKSTYLE)/bin/collateindex.pl -f -g -t 'Index'
99+
#COLLATEINDEX = $(PERL) $(DOCBOOKSTYLE)/bin/collateindex.pl -f -g -t 'Index'
100+
COLLATEINDEX =$(PERL) /usr/bin/collateindex.pl -f -g -t 'Index'
100101

101102
ifeq (,$(wildcard HTML.index))
102103
bookindex.sgml:
104+
ifeq (,$(wildcard$(COLLATEINDEX)))
105+
touch $@
106+
else
103107
$(COLLATEINDEX) -o $@ -N
108+
endif
109+
104110
setindex.sgml:
111+
ifeq (,$(wildcard$(COLLATEINDEX)))
112+
touch $@
113+
else
105114
$(COLLATEINDEX) -x -o $@ -N
115+
endif
106116
else
107117
bookindex.sgml: HTML.index
108118
$(COLLATEINDEX) -i'bookindex' -o$@$<
119+
109120
setindex.sgml: HTML.index
110121
$(COLLATEINDEX) -i'setindex' -x -o$@$<
111122
endif

‎doc/src/sgml/cvs.sgml‎

Lines changed: 5 additions & 5 deletions
Original file line numberDiff line numberDiff line change
@@ -1,5 +1,5 @@
11
<!--
2-
$Header: /cvsroot/pgsql/doc/src/sgml/cvs.sgml,v 1.20 2001/11/21 05:53:40 thomas Exp $
2+
$Header: /cvsroot/pgsql/doc/src/sgml/cvs.sgml,v 1.21 2001/12/08 03:24:22 thomas Exp $
33
CVS code repository
44
Thomas Lockhart
55
-->
@@ -409,12 +409,12 @@ $ cvsup -L 2 <replaceable class="parameter">postgres.cvsup</replaceable>
409409
# at the date specified below
410410
#*default date=97.08.29.00.00.00
411411

412-
# base directorypoints towhere CVSup will store its 'bookmarks' file(s)
412+
# base directory where CVSup will store its 'bookmarks' file(s)
413413
# will create subdirectory sup/
414414
#*default base=/opt/postgres # /usr/local/pgsql
415415
*default base=/home/cvs
416416

417-
# prefix directorypoints towhere CVSup will store the actual distribution(s)
417+
# prefix directory where CVSup will store the actual distribution(s)
418418
*default prefix=/home/cvs
419419

420420
# complete distribution, including all below
@@ -444,10 +444,10 @@ pgsql
444444
*default delete use-rel-suffix
445445
*default tag=.
446446

447-
# base directorypoints towhere CVSup will store its 'bookmarks' file(s)
447+
# base directory where CVSup will store its 'bookmarks' file(s)
448448
*default base=<replaceable class="parameter">/usr/local/pgsql</replaceable>
449449

450-
# prefix directorypoints towhere CVSup will store the actual distribution(s)
450+
# prefix directory where CVSup will store the actual distribution(s)
451451
*default prefix=<replaceable class="parameter">/usr/local/pgsql</replaceable>
452452

453453
# complete distribution, including all below

‎doc/src/sgml/datatype.sgml‎

Lines changed: 72 additions & 35 deletions
Original file line numberDiff line numberDiff line change
@@ -1,5 +1,5 @@
11
<!--
2-
$Header: /cvsroot/pgsql/doc/src/sgml/datatype.sgml,v 1.77 2001/11/28 20:49:09 petere Exp $
2+
$Header: /cvsroot/pgsql/doc/src/sgml/datatype.sgml,v 1.78 2001/12/08 03:24:22 thomas Exp $
33
-->
44

55
<chapter id="datatype">
@@ -219,25 +219,25 @@ $Header: /cvsroot/pgsql/doc/src/sgml/datatype.sgml,v 1.77 2001/11/28 20:49:09 pe
219219
</row>
220220

221221
<row>
222-
<entry><type>time [ without time zone ]</type></entry>
222+
<entry><type>time [(<replaceable>p</replaceable>) ] [without time zone ]</type></entry>
223223
<entry></entry>
224224
<entry>time of day</entry>
225225
</row>
226226

227227
<row>
228-
<entry><type>time with time zone</type></entry>
228+
<entry><type>time[ (<replaceable>p</replaceable>) ]with time zone</type></entry>
229229
<entry><type>timetz</type></entry>
230230
<entry>time of day, including time zone</entry>
231231
</row>
232232

233233
<row>
234-
<entry><type>timestamp without time zone</type></entry>
234+
<entry><type>timestamp[ (<replaceable>p</replaceable>) ]without time zone</type></entry>
235235
<entry><type>timestamp</type></entry>
236236
<entry>date and time</entry>
237237
</row>
238238

239239
<row>
240-
<entry><type>timestamp [ with time zone ]</type></entry>
240+
<entry><type>timestamp [(<replaceable>p</replaceable>) ] [with time zone ]</type></entry>
241241
<entry><type>timestamptz</type></entry>
242242
<entry>date and time, including time zone</entry>
243243
</row>
@@ -1274,15 +1274,15 @@ SELECT b, char_length(b) FROM test2;
12741274
</thead>
12751275
<tbody>
12761276
<row>
1277-
<entry><type>timestamp without time zone</type></entry>
1277+
<entry><type>timestamp[ (<replaceable>p</replaceable>) ]without time zone</type></entry>
12781278
<entry>both date and time</entry>
12791279
<entry>8 bytes</entry>
12801280
<entry>4713 BC</entry>
12811281
<entry>AD 1465001</entry>
12821282
<entry>1 microsecond / 14 digits</entry>
12831283
</row>
12841284
<row>
1285-
<entry><type>timestamp [ with time zone ]</type></entry>
1285+
<entry><type>timestamp [(<replaceable>p</replaceable>) ] [with time zone ]</type></entry>
12861286
<entry>both date and time</entry>
12871287
<entry>8 bytes</entry>
12881288
<entry>4713 BC</entry>
@@ -1324,28 +1324,38 @@ SELECT b, char_length(b) FROM test2;
13241324
</tbody>
13251325
</tgroup>
13261326
</table>
1327+
</para>
13271328

1328-
<note>
1329-
<para>
1330-
Time zones, and time-zone conventions, are influenced by
1331-
political conventions, not just physical effects. Time zones have
1332-
become somewhat standardized during the 1900's, but continue to
1333-
be prone to arbitrary changes with time.
1334-
<productname>PostgreSQL</productname> uses your operating
1335-
system's underlying features to provide time-zone
1336-
support, and these systems usually contain information for only
1337-
the time period 1902 through 2038 (corresponding to the full
1338-
range of conventional Unix system time).
1339-
<type>timestamp with time zone</type> will use time zone
1340-
information only within that year range, and assumes that times
1341-
are in UTC outside that range.
1342-
</para>
1343-
</note>
1329+
<para>
1330+
<type>time</type> and <type>timestamp</type> both accept an
1331+
option precision field <replaceable>p</replaceable> which
1332+
determines the number of digits retained beyond the seconds
1333+
decimal point. By default, there is no explicit bound on precision
1334+
and the actual precision is determined by the underlying double
1335+
precision floating point number used to store values in seconds
1336+
for <type>interval</type> and
1337+
since 2000-01-01 in the case of <type>timestamp</type>.
1338+
</para>
1339+
1340+
<para>
1341+
Time zones, and time-zone conventions, are influenced by
1342+
political decisions, not just physical effects. Time zones have
1343+
become somewhat standardized around the world during the 1900's,
1344+
but continue to
1345+
be prone to arbitrary changes.
1346+
<productname>PostgreSQL</productname> uses your operating
1347+
system's underlying features to provide time-zone
1348+
support, and these systems usually contain information for only
1349+
the time period 1902 through 2038 (corresponding to the full
1350+
range of conventional Unix system time).
1351+
<type>timestamp with time zone</type> will use time zone
1352+
information only within that year range, and assumes that times
1353+
are in UTC outside that range.
13441354
</para>
13451355

13461356
<para>
13471357
To ensure compatibility to earlier versions of <productname>PostgreSQL</productname>
1348-
wealsocontinue to provide <type>datetime</type>
1358+
we continue to provide <type>datetime</type>
13491359
(equivalent to <type>timestamp</type>) and
13501360
<type>timespan</type> (equivalent to <type>interval</type>),
13511361
however support for these is now restricted to having an
@@ -1384,11 +1394,16 @@ SELECT b, char_length(b) FROM test2;
13841394
Remember that any date or time input needs to be enclosed into
13851395
single quotes, like text strings. Refer to <xref
13861396
linkend="sql-syntax-constants-generic"> for more information.
1387-
SQL requires the following syntax
1397+
<acronym>SQL9x</acronym> requires the following syntax
13881398
<synopsis>
1389-
<replaceable>type</replaceable> '<replaceable>value</replaceable>'
1399+
<replaceable>type</replaceable>[ (<replaceable>p</replaceable>) ]'<replaceable>value</replaceable>'
13901400
</synopsis>
1391-
but <productname>PostgreSQL</productname> is more flexible.
1401+
where <replaceable>p</replaceable> is an integer specifying the
1402+
number of fractional digits in the seconds field, and is allowed
1403+
for <type>time</type>, <type>timestamp</type>, and <type>interval</type> types.
1404+
<productname>PostgreSQL</productname> is more flexible in
1405+
handling date/time than the
1406+
<acronym>SQL</acronym> standard requires.
13921407
</para>
13931408

13941409
<sect3>
@@ -1569,7 +1584,7 @@ SELECT b, char_length(b) FROM test2;
15691584
</sect3>
15701585

15711586
<sect3>
1572-
<title><type>time [ without time zone ]</type></title>
1587+
<title><type>time [( <replaceable>p</replaceable> ) ] [without time zone ]</type></title>
15731588

15741589
<indexterm>
15751590
<primary>time</primary>
@@ -1581,8 +1596,10 @@ SELECT b, char_length(b) FROM test2;
15811596
</indexterm>
15821597

15831598
<para>
1584-
Per SQL99, this type can be referenced as <type>time</type> and
1585-
as <type>time without time zone</type>.
1599+
Per SQL99, this type can be specified as <type>time</type> or
1600+
as <type>time without time zone</type>. The optional precision
1601+
<replaceable>p</replaceable> should be between 0 and 13, and
1602+
defaults to the precision of the input time literal.
15861603
</para>
15871604

15881605
<para>
@@ -1641,7 +1658,7 @@ SELECT b, char_length(b) FROM test2;
16411658
</sect3>
16421659

16431660
<sect3>
1644-
<title><type>time with time zone</type></title>
1661+
<title><type>time[ ( <replaceable>precision</replaceable> ) ]with time zone</type></title>
16451662

16461663
<indexterm>
16471664
<primary>time with time zone</primary>
@@ -1662,6 +1679,12 @@ SELECT b, char_length(b) FROM test2;
16621679
required by any application.
16631680
</para>
16641681

1682+
<para>
1683+
The optional precision
1684+
<replaceable>p</replaceable> should be between 0 and 13, and
1685+
defaults to the precision of the input time literal.
1686+
</para>
1687+
16651688
<para>
16661689
<type>time with time zone</type> accepts all input also legal
16671690
for the <type>time</type> type, appended with a legal time zone,
@@ -1705,15 +1728,15 @@ SELECT b, char_length(b) FROM test2;
17051728
</sect3>
17061729

17071730
<sect3>
1708-
<title><type>timestamp without time zone</type></title>
1731+
<title><type>timestamp[ (<replaceable>precision</replaceable>) ]without time zone</type></title>
17091732

17101733
<indexterm>
17111734
<primary>timestamp without time zone</primary>
17121735
<secondary>data type</secondary>
17131736
</indexterm>
17141737

17151738
<para>
1716-
Valid input for the <type>timestamp without time zone</type>
1739+
Valid input for the <type>timestamp[ (<replaceable>p</replaceable>) ]without time zone</type>
17171740
type consists of a concatenation
17181741
of a date and a time, followed by an optional <literal>AD</literal> or
17191742
<literal>BC</literal>, followed by an optional time zone. (See below.)
@@ -1733,6 +1756,12 @@ January 8 04:05:06 1999 PST
17331756
is supported.
17341757
</para>
17351758

1759+
<para>
1760+
The optional precision
1761+
<replaceable>p</replaceable> should be between 0 and 13, and
1762+
defaults to the precision of the input <type>timestamp</type> literal.
1763+
</para>
1764+
17361765
<para>
17371766
For <type>timestamp without time zone</type>, any explicit time
17381767
zone specified in the input is silently swallowed. That is, the
@@ -1742,7 +1771,7 @@ January 8 04:05:06 1999 PST
17421771
</sect3>
17431772

17441773
<sect3>
1745-
<title><type>timestamp with time zone</type></title>
1774+
<title><type>timestamp[ (<replaceable>precision</replaceable>) ]with time zone</type></title>
17461775

17471776
<indexterm>
17481777
<primary>timestamp</primary>
@@ -1768,6 +1797,12 @@ January 8 04:05:06 1999 PST
17681797
is supported.
17691798
</para>
17701799

1800+
<para>
1801+
The optional precision
1802+
<replaceable>p</replaceable> should be between 0 and 13, and
1803+
defaults to the precision of the input <type>timestamp</type> literal.
1804+
</para>
1805+
17711806
<para>
17721807
<table tocentry="1" id="datatype-timezone-table">
17731808
<title>Time Zone Input</title>
@@ -1852,7 +1887,9 @@ January 8 04:05:06 1999 PST
18521887
The following <acronym>SQL</acronym>-compatible functions can be
18531888
used as date or time
18541889
input for the corresponding data type: <literal>CURRENT_DATE</literal>,
1855-
<literal>CURRENT_TIME</literal>, <literal>CURRENT_TIMESTAMP</literal>.
1890+
<literal>CURRENT_TIME</literal>,
1891+
<literal>CURRENT_TIMESTAMP</literal>. The latter two accept an
1892+
optional precision specification.
18561893
</para>
18571894

18581895
<para>

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