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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>6.1. Data Types — Presto 0.123 Documentation</title>
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<div class="header">
<h1 class="heading"><a href="../index.html">
<span>Presto 0.123 Documentation</span></a></h1>
<h2 class="heading"><span>6.1. Data Types</span></h2>
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<div class="content">
<div class="section" id="data-types">
<h1>6.1. Data Types</h1>
<p>Presto currently supports a limited set of data types.
These types can be used with the standard <tt class="docutils literal"><span class="pre">CAST</span></tt> operator.</p>
<div class="section" id="boolean">
<h2>BOOLEAN</h2>
<blockquote>
<div>This type captures boolean values <tt class="docutils literal"><span class="pre">true</span></tt> and <tt class="docutils literal"><span class="pre">false</span></tt>.</div></blockquote>
</div>
<div class="section" id="bigint">
<h2>BIGINT</h2>
<blockquote>
<div>A 64-bit signed two’s complement integer with a minimum value of
<tt class="docutils literal"><span class="pre">-2^63</span></tt> and a maximum value of <tt class="docutils literal"><span class="pre">2^63</span> <span class="pre">-</span> <span class="pre">1</span></tt>.</div></blockquote>
</div>
<div class="section" id="double">
<h2>DOUBLE</h2>
<blockquote>
<div>A double is a 64-bit inexact, variable-precision implementing the
IEEE Standard 754 for Binary Floating-Point Arithmetic.</div></blockquote>
</div>
<div class="section" id="varchar">
<h2>VARCHAR</h2>
<blockquote>
<div>Variable length character data.</div></blockquote>
</div>
<div class="section" id="varbinary">
<h2>VARBINARY</h2>
<blockquote>
<div>Variable length binary data.</div></blockquote>
</div>
<div class="section" id="json">
<h2>JSON</h2>
<blockquote>
<div>Variable length json data.</div></blockquote>
</div>
<div class="section" id="date">
<h2>DATE</h2>
<blockquote>
<div><p>Calendar date (year, month, day).</p>
<p>Example: <tt class="docutils literal"><span class="pre">DATE</span> <span class="pre">'2001-08-22'</span></tt></p>
</div></blockquote>
</div>
<div class="section" id="time">
<h2>TIME</h2>
<blockquote>
<div><p>Time of day (hour, minute, second, millisecond) without a time zone.
Values of this type are parsed and rendered in the session time zone.</p>
<p>Example: <tt class="docutils literal"><span class="pre">TIME</span> <span class="pre">'01:02:03.456'</span></tt></p>
</div></blockquote>
</div>
<div class="section" id="time-with-time-zone">
<h2>TIME WITH TIME ZONE</h2>
<blockquote>
<div><p>Time of day (hour, minute, second, millisecond) with a time zone.
Values of this type are rendered using the time zone from the value.</p>
<p>Example: <tt class="docutils literal"><span class="pre">TIME</span> <span class="pre">'01:02:03.456</span> <span class="pre">America/Los_Angeles'</span></tt></p>
</div></blockquote>
</div>
<div class="section" id="timestamp">
<h2>TIMESTAMP</h2>
<blockquote>
<div><p>Instant in time that includes the date and time of day without a time zone.
Values of this type are parsed and rendered in the session time zone.</p>
<p>Example: <tt class="docutils literal"><span class="pre">TIMESTAMP</span> <span class="pre">'2001-08-22</span> <span class="pre">03:04:05.321'</span></tt></p>
</div></blockquote>
</div>
<div class="section" id="timestamp-with-time-zone">
<h2>TIMESTAMP WITH TIME ZONE</h2>
<blockquote>
<div><p>Instant in time that includes the date and time of day with a time zone.
Values of this type are rendered using the time zone from the value.</p>
<p>Example: <tt class="docutils literal"><span class="pre">TIMESTAMP</span> <span class="pre">'2001-08-22</span> <span class="pre">03:04:05.321</span> <span class="pre">America/Los_Angeles'</span></tt></p>
</div></blockquote>
</div>
<div class="section" id="interval-year-to-month">
<h2>INTERVAL YEAR TO MONTH</h2>
<blockquote>
<div><p>Span of years and months.</p>
<p>Example: <tt class="docutils literal"><span class="pre">INTERVAL</span> <span class="pre">'3'</span> <span class="pre">MONTH</span></tt></p>
</div></blockquote>
</div>
<div class="section" id="interval-day-to-second">
<h2>INTERVAL DAY TO SECOND</h2>
<blockquote>
<div><p>Span of days, hours, minutes, seconds and milliseconds.</p>
<p>Example: <tt class="docutils literal"><span class="pre">INTERVAL</span> <span class="pre">'2'</span> <span class="pre">DAY</span></tt></p>
</div></blockquote>
</div>
<div class="section" id="array">
<span id="array-type"></span><h2>ARRAY</h2>
<blockquote>
<div><p>An array of the given component type.</p>
<p>Example: <tt class="docutils literal"><span class="pre">ARRAY[1,</span> <span class="pre">2,</span> <span class="pre">3]</span></tt></p>
</div></blockquote>
</div>
<div class="section" id="map">
<span id="map-type"></span><h2>MAP</h2>
<blockquote>
<div>A map between the given component types.</div></blockquote>
</div>
<div class="section" id="row">
<span id="row-type"></span><h2>ROW</h2>
<blockquote>
<div><p>A structure made up of named fields. The fields may be of any SQL type, and are
accessed with field reference operator <tt class="docutils literal"><span class="pre">.</span></tt></p>
<p>Example: <tt class="docutils literal"><span class="pre">my_column.my_field</span></tt></p>
</div></blockquote>
</div>
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