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Support EEEE (scientific notation) in to_char().

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Pavel Stehule, Brendan Jurd
This commit is contained in:
Tom Lane
2009-08-10 18:29:27 +00:00
parent 933b17b663
commit e61fd4ac74
6 changed files with 347 additions and 14 deletions
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17
doc/src/sgml/func.sgml
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@ -1,4 +1,4 @@
<!-- $PostgreSQL: pgsql/doc/src/sgml/func.sgml,v 1.485 2009/08/10 16:10:19 tgl Exp $ -->
<!-- $PostgreSQL: pgsql/doc/src/sgml/func.sgml,v 1.486 2009/08/10 18:29:26 tgl Exp $ -->
<chapter id="functions">
<title>Functions and Operators</title>
@ -5345,7 +5345,7 @@ SELECT SUBSTRING('XY1234Z', 'Y*?([0-9]{1,3})');
</row>
<row>
<entry><literal>EEEE</literal></entry>
<entry>scientific notation (not implemented)</entry>
<entry>exponent for scientific notation</entry>
</row>
</tbody>
</tgroup>
@ -5404,6 +5404,15 @@ SELECT SUBSTRING('XY1234Z', 'Y*?([0-9]{1,3})');
(e.g., <literal>99.9V99</literal> is not allowed).
</para>
</listitem>
<listitem>
<para>
<literal>EEEE</literal> (scientific notation) cannot be used in
combination with any of the other special formatting patterns or
modifiers, and must be at the end of the format string
(e.g., <literal>9.99EEEE</literal> is a valid pattern).
</para>
</listitem>
</itemizedlist>
</para>
@ -5605,6 +5614,10 @@ SELECT SUBSTRING('XY1234Z', 'Y*?([0-9]{1,3})');
<entry><literal>to_char(12.45, '99V9')</literal></entry>
<entry><literal>'&nbsp;125'</literal></entry>
</row>
<row>
<entry><literal>to_char(0.0004859, '9.99EEEE')</literal></entry>
<entry><literal>' 4.86e-04'</literal></entry>
</row>
</tbody>
</tgroup>
</table>