PostgreSQL TODO List
====================
Current maintainer: Bruce Momjian (pgman@candle.pha.pa.us)
-Last updated: Mon Apr 24 20:00:38 EDT 2006
+Last updated: Mon Apr 24 20:06:13 EDT 2006
The most recent version of this document can be viewed at
http://www.postgresql.org/docs/faqs.TODO.html.
o Support ISO INTERVAL syntax if units cannot be determined from
the string, and are supplied after the string
- The SQL standard states that the units after the string specify
- the units of the string, e.g. INTERVAL '2' MINUTE should
- return '00:02:00'. The current behavior has the units
- restrict the interval value to the specified unit or unit range,
- INTERVAL '70' SECOND returns '00:00:10'.
+ The SQL standard states that the units after the string
+ specify the units of the string, e.g. INTERVAL '2' MINUTE
+ should return '00:02:00'. The current behavior has the units
+ restrict the interval value to the specified unit or unit
+ range, INTERVAL '70' SECOND returns '00:00:10'.
For syntax that isn't uniquely ISO or PG syntax, like '1' or
'1:30', treat as ISO if there is a range specification clause,
- and as PG if there no clause is present, e.g. interpret
- '1:30' MINUTE TO SECOND as '1 minute 30 seconds', and
- interpret '1:30' as '1 hour, 30 minutes'.
-
- This makes common cases like SELECT INTERVAL '1' MONTH
- SQL-standard results. The SQL standard supports a limited
- number of unit combinations and doesn't support unit names
- in the string. The PostgreSQL syntax is more flexible in
- the range of units supported, e.g. PostgreSQL supports
- '1 year 1 hour', while the SQL standard does not.
+ and as PG if there no clause is present, e.g. interpret '1:30'
+ MINUTE TO SECOND as '1 minute 30 seconds', and interpret
+ '1:30' as '1 hour, 30 minutes'.
+
+ This makes common cases like SELECT INTERVAL '1' MONTH
+ SQL-standard results. The SQL standard supports a limited
+ number of unit combinations and doesn't support unit names in
+ the string. The PostgreSQL syntax is more flexible in the
+ range of units supported, e.g. PostgreSQL supports '1 year 1
+ hour', while the SQL standard does not.
o Add support for year-month syntax, INTERVAL '50-6' YEAR TO MONTH
o Interpret INTERVAL '1 year' MONTH as CAST (INTERVAL '1 year' AS
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<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 Apr 24 20:00:38 EDT 2006
+Last updated: Mon Apr 24 20:06:13 EDT 2006
</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>.
SECOND
</li><li>Support ISO INTERVAL syntax if units cannot be determined from
the string, and are supplied after the string
-<p> The SQL standard states that the units after the string specify
- the units of the string, e.g. INTERVAL '2' MINUTE should
- return '00:02:00'. The current behavior has the units
- restrict the interval value to the specified unit or unit range,
- INTERVAL '70' SECOND returns '00:00:10'.
+<p> The SQL standard states that the units after the string
+ specify the units of the string, e.g. INTERVAL '2' MINUTE
+ should return '00:02:00'. The current behavior has the units
+ restrict the interval value to the specified unit or unit
+ range, INTERVAL '70' SECOND returns '00:00:10'.
</p>
<p> For syntax that isn't uniquely ISO or PG syntax, like '1' or
'1:30', treat as ISO if there is a range specification clause,
- and as PG if there no clause is present, e.g. interpret
- '1:30' MINUTE TO SECOND as '1 minute 30 seconds', and
- interpret '1:30' as '1 hour, 30 minutes'.
-</p>
-<p> This makes common cases like SELECT INTERVAL '1' MONTH
- SQL-standard results. The SQL standard supports a limited
- number of unit combinations and doesn't support unit names
- in the string. The PostgreSQL syntax is more flexible in
- the range of units supported, e.g. PostgreSQL supports
- '1 year 1 hour', while the SQL standard does not.
+ and as PG if there no clause is present, e.g. interpret '1:30'
+ MINUTE TO SECOND as '1 minute 30 seconds', and interpret
+ '1:30' as '1 hour, 30 minutes'.
+</p>
+<p> This makes common cases like SELECT INTERVAL '1' MONTH
+ SQL-standard results. The SQL standard supports a limited
+ number of unit combinations and doesn't support unit names in
+ the string. The PostgreSQL syntax is more flexible in the
+ range of units supported, e.g. PostgreSQL supports '1 year 1
+ hour', while the SQL standard does not.
</p>
</li><li>Add support for year-month syntax, INTERVAL '50-6' YEAR TO MONTH
</li><li>Interpret INTERVAL '1 year' MONTH as CAST (INTERVAL '1 year' AS