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        Class&nbsp;SQLCustomType
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<h1 class="epydoc">Class SQLCustomType</h1><span class="codelink"><a href="web2py.gluon.dal-pysrc.html#SQLCustomType">source&nbsp;code</a></span><br /><br />
<pre class="base-tree">
object --+
         |
        <strong class="uidshort">SQLCustomType</strong>
</pre>

<hr />
<pre class="literalblock">

allows defining of custom SQL types

Example::

    decimal = SQLCustomType(
        type ='double',
        native ='integer',
        encoder =(lambda x: int(float(x) * 100)),
        decoder = (lambda x: Decimal(&quot;0.00&quot;) + Decimal(str(float(x)/100)) )
        )

    db.define_table(
        'example',
        Field('value', type=decimal)
        )

:param type: the web2py type (default = 'string')
:param native: the backend type
:param encoder: how to encode the value to store it in the backend
:param decoder: how to decode the value retrieved from the backend
:param validator: what validators to use ( default = None, will use the
    default validator for type)

</pre><br /><br />

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