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Add example of MONEY casting to numeric if locale is known.

This commit is contained in:
Bruce Momjian 2007-11-27 16:46:36 +00:00
parent 7888b52076
commit a0a9c5bcb9
1 changed files with 9 additions and 3 deletions
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12
doc/src/sgml/datatype.sgml
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@ -1,4 +1,4 @@
<!-- $PostgreSQL: pgsql/doc/src/sgml/datatype.sgml,v 1.219 2007/11/27 06:05:57 momjian Exp $ -->
<!-- $PostgreSQL: pgsql/doc/src/sgml/datatype.sgml,v 1.220 2007/11/27 16:46:36 momjian Exp $ -->
<chapter id="datatype">
<title id="datatype-title">Data Types</title>
@ -848,8 +848,14 @@ ALTER SEQUENCE <replaceable class="parameter">tablename</replaceable>_<replaceab
<programlisting>
SELECT 1234::text::money;
</programlisting>
There is no simple way of doing the reverse using a locale-neutral
method, namely casting a <type>money</type> value to a numeric type.
There is no simple way of doing the reverse in a locale-independent
manner, namely casting a <type>money</type> value to a numeric type.
If you know the currency symbol and thousands separator you can use
<function>regexp_replace()</>:
<programlisting>
SELECT regexp_replace('52093.89'::money::text, '[$,]', '', 'g')::numeric;
</programlisting>
</para>
<para>