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<!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Transitional//EN" "http://www.w3.org/TR/xhtml1/DTD/xhtml1-transitional.dtd"><html xmlns="http://www.w3.org/1999/xhtml"><head><meta http-equiv="Content-Type" content="text/html; charset=UTF-8" /><title>8.2. Monetary Types</title><link rel="stylesheet" type="text/css" href="stylesheet.css" /><link rev="made" href="pgsql-docs@lists.postgresql.org" /><meta name="generator" content="DocBook XSL Stylesheets Vsnapshot" /><link rel="prev" href="datatype-numeric.html" title="8.1. Numeric Types" /><link rel="next" href="datatype-character.html" title="8.3. Character Types" /></head><body><div xmlns="http://www.w3.org/TR/xhtml1/transitional" class="navheader"><table width="100%" summary="Navigation header"><tr><th colspan="5" align="center">8.2. Monetary Types</th></tr><tr><td width="10%" align="left"><a accesskey="p" href="datatype-numeric.html" title="8.1. Numeric Types">Prev</a> </td><td width="10%" align="left"><a accesskey="u" href="datatype.html" title="Chapter 8. Data Types">Up</a></td><th width="60%" align="center">Chapter 8. Data Types</th><td width="10%" align="right"><a accesskey="h" href="index.html" title="PostgreSQL 11.5 Documentation">Home</a></td><td width="10%" align="right"> <a accesskey="n" href="datatype-character.html" title="8.3. Character Types">Next</a></td></tr></table><hr></hr></div><div class="sect1" id="DATATYPE-MONEY"><div class="titlepage"><div><div><h2 class="title" style="clear: both">8.2. Monetary Types</h2></div></div></div><p>
The <code class="type">money</code> type stores a currency amount with a fixed
fractional precision; see <a class="xref" href="datatype-money.html#DATATYPE-MONEY-TABLE" title="Table 8.3. Monetary Types">Table 8.3</a>. The fractional precision is
determined by the database's <a class="xref" href="runtime-config-client.html#GUC-LC-MONETARY">lc_monetary</a> setting.
The range shown in the table assumes there are two fractional digits.
Input is accepted in a variety of formats, including integer and
floating-point literals, as well as typical
currency formatting, such as <code class="literal">'$1,000.00'</code>.
Output is generally in the latter form but depends on the locale.
</p><div class="table" id="DATATYPE-MONEY-TABLE"><p class="title"><strong>Table 8.3. Monetary Types</strong></p><div class="table-contents"><table class="table" summary="Monetary Types" border="1"><colgroup><col /><col /><col /><col /></colgroup><thead><tr><th>Name</th><th>Storage Size</th><th>Description</th><th>Range</th></tr></thead><tbody><tr><td><code class="type">money</code></td><td>8 bytes</td><td>currency amount</td><td>-92233720368547758.08 to +92233720368547758.07</td></tr></tbody></table></div></div><br class="table-break" /><p>
Since the output of this data type is locale-sensitive, it might not
work to load <code class="type">money</code> data into a database that has a different
setting of <code class="varname">lc_monetary</code>. To avoid problems, before
restoring a dump into a new database make sure <code class="varname">lc_monetary</code> has
the same or equivalent value as in the database that was dumped.
</p><p>
Values of the <code class="type">numeric</code>, <code class="type">int</code>, and
<code class="type">bigint</code> data types can be cast to <code class="type">money</code>.
Conversion from the <code class="type">real</code> and <code class="type">double precision</code>
data types can be done by casting to <code class="type">numeric</code> first, for
example:
</p><pre class="programlisting">
SELECT '12.34'::float8::numeric::money;
</pre><p>
However, this is not recommended. Floating point numbers should not be
used to handle money due to the potential for rounding errors.
</p><p>
A <code class="type">money</code> value can be cast to <code class="type">numeric</code> without
loss of precision. Conversion to other types could potentially lose
precision, and must also be done in two stages:
</p><pre class="programlisting">
SELECT '52093.89'::money::numeric::float8;
</pre><p>
</p><p>
Division of a <code class="type">money</code> value by an integer value is performed
with truncation of the fractional part towards zero. To get a rounded
result, divide by a floating-point value, or cast the <code class="type">money</code>
value to <code class="type">numeric</code> before dividing and back to <code class="type">money</code>
afterwards. (The latter is preferable to avoid risking precision loss.)
When a <code class="type">money</code> value is divided by another <code class="type">money</code>
value, the result is <code class="type">double precision</code> (i.e., a pure number,
not money); the currency units cancel each other out in the division.
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