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<div class="section" id="cast-loose">
<h1><span class="section-number">7.15.2. </span><code class="docutils literal notranslate"><span class="pre">cast_loose</span></code><a class="headerlink" href="#cast-loose" title="Permalink to this headline">¶</a></h1>
<div class="section" id="summary">
<h2><span class="section-number">7.15.2.1. </span>Summary<a class="headerlink" href="#summary" title="Permalink to this headline">¶</a></h2>
<div class="versionadded">
<p><span class="versionmodified added">New in version 8.0.8.</span></p>
</div>
<p><code class="docutils literal notranslate"><span class="pre">cast_loose</span></code> cast loosely a string to the type specified.
If the target string can cast, <code class="docutils literal notranslate"><span class="pre">cast_loose</span></code> has cast the string to the type specified by the argument.
If the target string can’t cast, <code class="docutils literal notranslate"><span class="pre">cast_loose</span></code> set the default value specified by the argument.</p>
</div>
<div class="section" id="syntax">
<h2><span class="section-number">7.15.2.2. </span>Syntax<a class="headerlink" href="#syntax" title="Permalink to this headline">¶</a></h2>
<p><code class="docutils literal notranslate"><span class="pre">cast_loose</span></code> has three parameters:</p>
<div class="highlight-none notranslate"><div class="highlight"><pre><span></span>cast_loose(type, value, defaul_value)
</pre></div>
</div>
<p><code class="docutils literal notranslate"><span class="pre">type</span></code> : Specify the type of after casted value.</p>
<p><code class="docutils literal notranslate"><span class="pre">value</span></code> : Specify the target of a cast.</p>
<p><code class="docutils literal notranslate"><span class="pre">default_value</span></code> : Speficy the value of setting when failed a cast.</p>
</div>
<div class="section" id="usage">
<h2><span class="section-number">7.15.2.3. </span>Usage<a class="headerlink" href="#usage" title="Permalink to this headline">¶</a></h2>
<p>Here are a schema definition and sample data to show usage.</p>
<p>Execution example:</p>
<div class="highlight-none notranslate"><div class="highlight"><pre><span></span>table_create Data TABLE_HASH_KEY ShortText
# [[0, 1337566253.89858, 0.000355720520019531], true]
load --table Data
[
{"_key": "100abc"}
{"_key": "100"}
]
# [[0, 1337566253.89858, 0.000355720520019531], 2]
</pre></div>
</div>
<p>The following example is cast “100” and “100abc” with <code class="docutils literal notranslate"><span class="pre">cast_loose</span></code>.</p>
<p>Execution example:</p>
<div class="highlight-none notranslate"><div class="highlight"><pre><span></span>select Data --output_columns '_key, cast_loose(Int64, _key, 10)'
# [
# [
# 0,
# 0.0,
# 0.0
# ],
# [
# [
# [
# 2
# ],
# [
# [
# "_key",
# "ShortText"
# ],
# [
# "cast_loose",
# null
# ]
# ],
# [
# "100abc",
# 10
# ]
# [
# "100",
# 100
# ]
# ]
# ]
# ]
</pre></div>
</div>
<p><code class="docutils literal notranslate"><span class="pre">cast_loose</span></code> cast “100” to 100 and “100abc” to 10.
Because “100” can cast to the Int64 and “100abc” can’t cast to the Int64.</p>
</div>
<div class="section" id="return-value">
<h2><span class="section-number">7.15.2.4. </span>Return value<a class="headerlink" href="#return-value" title="Permalink to this headline">¶</a></h2>
<p><code class="docutils literal notranslate"><span class="pre">cast_loose</span></code> returns the casted value or default value.</p>
</div>
<div class="section" id="see-also">
<h2><span class="section-number">7.15.2.5. </span>See also<a class="headerlink" href="#see-also" title="Permalink to this headline">¶</a></h2>
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<li><p><a class="reference internal" href="../commands/select.html"><span class="doc">select</span></a></p></li>
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<li><a class="reference internal" href="#">7.15.2. <code class="docutils literal notranslate"><span class="pre">cast_loose</span></code></a><ul>
<li><a class="reference internal" href="#summary">7.15.2.1. Summary</a></li>
<li><a class="reference internal" href="#syntax">7.15.2.2. Syntax</a></li>
<li><a class="reference internal" href="#usage">7.15.2.3. Usage</a></li>
<li><a class="reference internal" href="#return-value">7.15.2.4. Return value</a></li>
<li><a class="reference internal" href="#see-also">7.15.2.5. See also</a></li>
</ul>
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<h4>Previous topic</h4>
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<h4>Next topic</h4>
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