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Commit4d0e7b4

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Please find attached a patch (diff -c against cvs HEAD) to add a
function that accepts a double precision argument assumed to be a Unixepoch timestamp and returns timestamp with time zone, and accompanyingdocumentation.Usage:test=# select to_timestamp(200120400); to_timestamp------------------------ 1976-05-05 14:00:00+09(1 row)Michael Glaesemann
1 parent4a5cda7 commit4d0e7b4

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‎doc/src/sgml/func.sgml‎

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Original file line numberDiff line numberDiff line change
@@ -1,5 +1,5 @@
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<!--
2-
$PostgreSQL: pgsql/doc/src/sgml/func.sgml,v 1.252 2005/06/07 07:08:34 neilc Exp $
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$PostgreSQL: pgsql/doc/src/sgml/func.sgml,v 1.253 2005/06/09 16:35:08 momjian Exp $
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PostgreSQL documentation
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-->
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@@ -4082,6 +4082,13 @@ SELECT SUBSTRING('XY1234Z', 'Y*?([0-9]{1,3})');
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argument is the value to be formatted and the second argument is a
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template that defines the output or input format.
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</para>
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<para>
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The <function>to_timestamp</function> function can also take a single
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<type>double precision</type> argument to convert from Unix epoch to
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<type>timestamp with time zone</type>.
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(<type>Integer</type> Unix epochs are implicitly cast to
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<type>double precision</type>.)
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</para>
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<table id="functions-formatting-table">
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<title>Formatting Functions</title>
@@ -4138,6 +4145,12 @@ SELECT SUBSTRING('XY1234Z', 'Y*?([0-9]{1,3})');
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<entry>convert string to time stamp</entry>
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<entry><literal>to_timestamp('05&nbsp;Dec&nbsp;2000', 'DD&nbsp;Mon&nbsp;YYYY')</literal></entry>
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</row>
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<row>
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<entry><literal><function>to_timestamp</function>(<type>double precision</type>)</literal></entry>
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<entry><type>timestamp with time zone</type></entry>
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<entry>convert UNIX epoch to time stamp</entry>
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<entry><literal>to_timestamp(200120400)</literal></entry>
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</row>
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<row>
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<entry><literal><function>to_number</function>(<type>text</type>, <type>text</type>)</literal></entry>
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<entry><type>numeric</type></entry>

‎src/include/catalog/pg_proc.h‎

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Original file line numberDiff line numberDiff line change
@@ -7,7 +7,7 @@
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* Portions Copyright (c) 1996-2005, PostgreSQL Global Development Group
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* Portions Copyright (c) 1994, Regents of the University of California
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*
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* $PostgreSQL: pgsql/src/include/catalog/pg_proc.h,v 1.364 2005/06/07 07:08:34 neilc Exp $
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* $PostgreSQL: pgsql/src/include/catalog/pg_proc.h,v 1.365 2005/06/09 16:35:09 momjian Exp $
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*
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* NOTES
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* The script catalog/genbki.sh reads this file and generates .bki
@@ -1459,6 +1459,8 @@ DATA(insert OID = 1156 ( timestamptz_ge PGNSP PGUID 12 f f t f i 2 16 "1184 1
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DESCR("greater-than-or-equal");
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DATA(insertOID=1157 (timestamptz_gtPGNSPPGUID12fftfi216"1184 1184"_null__null__null_timestamp_gt-_null_ ));
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DESCR("greater-than");
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DATA(insertOID=1158 (to_timestampPGNSPPGUID14fftfi11184"701"_null__null__null_"select (\'epoch\'::timestamptz + $1 * \'1 second\'::interval)"-_null_ ));
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DESCR("convert UNIX epoch to timestamptz");
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DATA(insertOID=1159 (timezonePGNSPPGUID12fftfi21114"25 1184"_null__null__null_timestamptz_zone-_null_ ));
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DESCR("adjust timestamp to new time zone");
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