From 5894e7e36e3af7111fb420434ba0f262dcd3f6af Mon Sep 17 00:00:00 2001
From: Bruce Momjian <bruce@momjian.us>
Date: Sat, 7 May 2005 04:24:34 +0000
Subject: [PATCH] Add items:
> * Prevent to_char() on interval from returning meaningless values
>
> For example, to_char('1 month', 'mon') is meaningless. Basically,
> most date-related parameters to to_char() are meaningless for
> intervals because interval is not anchored to a date.
>
> * Allow to_char() on interval values to accumulate the highest unit
> requested
>
> o to_char(INTERVAL '1 hour 5 minutes', 'MI') => 65
> o to_char(INTERVAL '43 hours 20 minutes', 'MI' ) => 2600
> o to_char(INTERVAL '43 hours 20 minutes', 'WK:DD:HR:MI') => 0:1:19:20
> o to_char(INTERVAL '3 years 5 months','MM') => 41
>
> Some special format flag would be required to request such
> accumulation. Such functionality could also be added to EXTRACT.
> Prevent accumulation that crosses the month/day boundary because of
> the uneven number of days in a month.
>
---
doc/TODO | 21 ++++++++++++++++++++-
doc/src/FAQ/TODO.html | 24 ++++++++++++++++++++++--
2 files changed, 42 insertions(+), 3 deletions(-)
diff --git a/doc/TODO b/doc/TODO
index 45ad26e0d87..020bfd519c8 100644
--- a/doc/TODO
+++ b/doc/TODO
@@ -2,7 +2,7 @@
PostgreSQL TODO List
====================
Current maintainer: Bruce Momjian (pgman@candle.pha.pa.us)
-Last updated: Mon May 2 14:27:06 EDT 2005
+Last updated: Sat May 7 00:24:29 EDT 2005
The most recent version of this document can be viewed at
http://www.postgresql.org/docs/faqs.TODO.html.
@@ -188,6 +188,25 @@ Data Types
zero the bits
* Prevent INET cast to CIDR from droping netmask, SELECT '1.1.1.1'::inet::cidr
* Add 'tid != tid ' operator for use in corruption recovery
+* Prevent to_char() on interval from returning meaningless values
+
+ For example, to_char('1 month', 'mon') is meaningless. Basically,
+ most date-related parameters to to_char() are meaningless for
+ intervals because interval is not anchored to a date.
+
+* Allow to_char() on interval values to accumulate the highest unit
+ requested
+
+ o to_char(INTERVAL '1 hour 5 minutes', 'MI') => 65
+ o to_char(INTERVAL '43 hours 20 minutes', 'MI' ) => 2600
+ o to_char(INTERVAL '43 hours 20 minutes', 'WK:DD:HR:MI') => 0:1:19:20
+ o to_char(INTERVAL '3 years 5 months','MM') => 41
+
+ Some special format flag would be required to request such
+ accumulation. Such functionality could also be added to EXTRACT.
+ Prevent accumulation that crosses the month/day boundary because of
+ the uneven number of days in a month.
+
* Add ISO INTERVAL handling
o Add support for day-time syntax, INTERVAL '1 2:03:04' DAY TO SECOND
o Add support for year-month syntax, INTERVAL '50-6' YEAR TO MONTH
diff --git a/doc/src/FAQ/TODO.html b/doc/src/FAQ/TODO.html
index bb3617fd6f9..1663450fcf9 100644
--- a/doc/src/FAQ/TODO.html
+++ b/doc/src/FAQ/TODO.html
@@ -8,7 +8,7 @@
<body bgcolor="#FFFFFF" text="#000000" link="#FF0000" vlink="#A00000" alink="#0000FF">
<h1><a name="section_1">PostgreSQL TODO List</a></h1>
<p>Current maintainer: Bruce Momjian (<a href="mailto:pgman@candle.pha.pa.us">pgman@candle.pha.pa.us</a>)<br/>
-Last updated: Mon May 2 14:27:06 EDT 2005
+Last updated: Sat May 7 00:24:29 EDT 2005
</p>
<p>The most recent version of this document can be viewed at<br/>
<a href="http://www.postgresql.org/docs/faqs.TODO.html">http://www.postgresql.org/docs/faqs.TODO.html</a>.
@@ -176,7 +176,27 @@ first.
zero the bits
</li><li>Prevent INET cast to CIDR from droping netmask, SELECT '<a href="telnet://1.1.1.1">1.1.1.1</a>'::inet::cidr
</li><li>Add 'tid != tid ' operator for use in corruption recovery
- </li><li>Add ISO INTERVAL handling
+ </li><li>Prevent to_char() on interval from returning meaningless values
+<p> For example, to_char('1 month', 'mon') is meaningless. Basically,
+ most date-related parameters to to_char() are meaningless for
+ intervals because interval is not anchored to a date.
+</p>
+ </li><li>Allow to_char() on interval values to accumulate the highest unit
+ requested
+ <ul>
+ <li>to_char(INTERVAL '1 hour 5 minutes', 'MI') => 65
+ </li><li>to_char(INTERVAL '43 hours 20 minutes', 'MI' ) => 2600
+ </li><li>to_char(INTERVAL '43 hours 20 minutes', 'WK:DD:HR:MI') => 0:1:19:20
+ </li><li>to_char(INTERVAL '3 years 5 months','MM') => 41
+ </li></ul>
+</li></ul>
+<p> Some special format flag would be required to request such<br/>
+ accumulation. Such functionality could also be added to EXTRACT. <br/>
+ Prevent accumulation that crosses the month/day boundary because of<br/>
+ the uneven number of days in a month.
+</p>
+<ul>
+ <li>Add ISO INTERVAL handling
<ul>
<li>Add support for day-time syntax, INTERVAL '1 2:03:04' DAY TO SECOND
</li><li>Add support for year-month syntax, INTERVAL '50-6' YEAR TO MONTH
--
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