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<title>Casting between data types</title>
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<h2 id="castdt"><a href="rbafzmst02.htm#ToC_138">Casting between data types</a></h2>
<p>There are many occasions when a value with a given data type needs to be
cast (changed) to a different data type or to the same data type with a different
length, precision, or scale. Data type promotion, as described in <a href="rbafzmstpromo.htm#promo">Promotion of data types</a>,
is one example of when a value with one data type needs to be cast to a new
data type. A data type that can be changed to another data type is <span class="italic">castable</span> from the source data type to the target data type.</p>
<p>The casting of one data type to another can occur implicitly or explicitly.
The cast functions or CAST specification (see <a href="rbafzmstdatetimearith.htm#cast">CAST specification</a>) can be
used to explicitly change a data type. The database manager might implicitly
cast data types during assignments that involve a distinct type (see <a href="rbafzmstch2bas.htm#udtasgn">Distinct type assignments</a>). In addition, when you create a sourced user-defined function,
the data types of the parameters of the source function must be castable to
the data types of the function that you are creating (see <a href="rbafzmstcfso.htm#cfso">CREATE FUNCTION (Sourced)</a>).</p>
<p>If truncation occurs when a character or graphic string is cast to another
data type, a warning occurs if any non-blank characters are truncated. This
truncation behavior is similar to retrieval assignment of character or graphic
strings (see <a href="rbafzmstch2bas.htm#reta">Retrieval assignment</a>).</p>
<p>For casts that involve a distinct type as either the data type to be cast
to or from, <a href="rbafzmstcastdt.htm#castt1">Table 12</a> shows the supported casts. For casts between
built-in data types, <a href="rbafzmstcastdt.htm#opcast">Table 13</a> shows the supported casts.</p>
<a name="castt1"></a>
<table id="castt1" width="100%" summary="" border="1" frame="hsides" rules="all">
<caption>Table 12. Supported Casts When a Distinct Type is Involved</caption>
<thead valign="bottom">
<tr>
<th id="wq130" width="33%" align="left" valign="bottom">Data Type ...</th>
<th id="wq131" width="66%" align="left" valign="bottom">Is Castable to Data Type
...</th>
</tr>
</thead>
<tbody valign="top">
<tr>
<td align="left" valign="bottom" headers="wq130">Distinct type <span class="italic">DT</span></td>
<td align="left" valign="bottom" headers="wq131">Source data type of distinct type <span class="italic">DT</span></td>
</tr>
<tr>
<td align="left" valign="bottom" headers="wq130">Source data type of distinct type <span class="italic">DT</span></td>
<td align="left" valign="bottom" headers="wq131">Distinct type <span class="italic">DT</span></td>
</tr>
<tr>
<td align="left" valign="bottom" headers="wq130">Distinct type <span class="italic">DT</span></td>
<td align="left" valign="bottom" headers="wq131">Distinct type <span class="italic">DT</span></td>
</tr>
<tr>
<td align="left" valign="bottom" headers="wq130">Data type <span class="italic">A</span></td>
<td align="left" valign="bottom" headers="wq131">Distinct type <span class="italic">DT</span> where <span class="italic">A</span> is promotable to the source data type of distinct type <span class="italic">DT</span> (see <a href="rbafzmstpromo.htm#promo">Promotion of data types</a>)</td>
</tr>
<tr>
<td align="left" valign="bottom" headers="wq130">INTEGER</td>
<td align="left" valign="bottom" headers="wq131">Distinct type <span class="italic">DT</span> if <span class="italic">DT</span>'s source type is SMALLINT</td>
</tr>
<tr>
<td align="left" valign="bottom" headers="wq130">DOUBLE</td>
<td align="left" valign="bottom" headers="wq131">Distinct type <span class="italic">DT</span> if <span class="italic">DT</span>'s source data type is REAL</td>
</tr>
<tr>
<td align="left" valign="bottom" headers="wq130">VARCHAR</td>
<td align="left" valign="bottom" headers="wq131">Distinct type <span class="italic">DT</span> if <span class="italic">DT</span>'s source data type is CHAR or GRAPHIC</td>
</tr>
<tr>
<td align="left" valign="bottom" headers="wq130">VARGRAPHIC</td>
<td align="left" valign="bottom" headers="wq131">Distinct type <span class="italic">DT</span> if <span class="italic">DT</span>'s source data type is GRAPHIC or CHAR</td>
</tr>
<tr>
<td align="left" valign="bottom" headers="wq130">VARBINARY</td>
<td align="left" valign="bottom" headers="wq131">Distinct type <span class="italic">DT</span> if <span class="italic">DT</span>'s source data type is BINARY</td>
</tr>
</tbody>
</table>
<p>When a distinct type is involved in a cast, a cast function that was generated
when the distinct type was created is used. How the database manager chooses the function
depends on whether function notation or the CAST specification syntax is used.
For details, see <a href="rbafzmstch2function.htm#funcres">Function resolution</a>, and <a href="rbafzmstdatetimearith.htm#cast">CAST specification</a>. Function
resolution is used for both. However, in a CAST specification, when an unqualified
distinct type is specified as the target data type, the database manager resolves
the schema name of the distinct type and then uses that schema name to locate
the cast function.</p>
<p>The following table describes the supported casts between built-in data
types.</p>
<a name="opcast"></a>
<table id="opcast" width="100%" summary="" border="1" frame="hsides" rules="rows">
<caption>Table 13. Supported Casts Between Built-In Data Types</caption>
<thead valign="bottom">
<tr>
<th id="wq132" width="25%" align="left" valign="bottom">
<div class="lines">&nbsp;<br />
&nbsp;<br />
&nbsp;<br />
Target Data Type &rarr;<br />
&nbsp;<br />
&nbsp;<br />
&nbsp;<br />
Source Data Type &darr;<br />
</div></th>
<th id="wq133" width="10%" align="left" valign="middle">
<div class="lines">&nbsp;&nbsp;SMALLINT<br />
&nbsp;&nbsp;INTEGER<br />
&nbsp;&nbsp;BIGINT<br />
</div></th>
<th id="wq134" width="5%" align="left" valign="middle">
<div class="lines">&nbsp;&nbsp;DECIMAL<br />
&nbsp;&nbsp;NUMERIC<br />
</div></th>
<th id="wq135" width="5%" align="left" valign="middle">
<div class="lines">&nbsp;&nbsp;REAL<br />
&nbsp;&nbsp;DOUBLE<br />
</div></th>
<th id="wq136" width="10%" align="left" valign="middle">
<div class="lines">&nbsp;&nbsp;CHAR<br />
&nbsp;&nbsp;VARCHAR<br />
&nbsp;&nbsp;CLOB<br />
</div></th>
<th id="wq137" width="10%" align="left" valign="middle">
<div class="lines">&nbsp;&nbsp;GRAPHIC<br />
&nbsp;&nbsp;VARGRAPHIC<br />
&nbsp;&nbsp;DBCLOB<br />
</div></th>
<th id="wq138" width="10%" align="left" valign="middle">
<div class="lines">&nbsp;&nbsp;BINARY<br />
&nbsp;&nbsp;VARBINARY<br />
&nbsp;&nbsp;BLOB<br />
</div></th>
<th id="wq139" width="5%" align="left" valign="middle">
<div class="lines">&nbsp;&nbsp;DATE<br />
</div></th>
<th id="wq140" width="5%" align="left" valign="middle">
<div class="lines">&nbsp;&nbsp;TIME<br />
</div></th>
<th id="wq141" width="5%" align="left" valign="middle">
<div class="lines">&nbsp;&nbsp;TIMESTAMP<br />
</div></th>
<th id="wq142" width="5%" align="left" valign="middle">
<div class="lines">&nbsp;&nbsp;ROWID<br />
</div></th>
<th id="wq143" width="5%" align="left" valign="middle">
<div class="lines">&nbsp;&nbsp;DATALINK<br />
</div></th>
</tr>
</thead>
<tbody valign="top">
<tr>
<td align="left" valign="bottom" headers="wq132">SMALLINT</td>
<td align="center" valign="bottom" headers="wq133">Y</td>
<td align="center" valign="bottom" headers="wq134">Y</td>
<td align="center" valign="bottom" headers="wq135">Y</td>
<td align="center" valign="bottom" headers="wq136">Y</td>
<td align="center" valign="bottom" headers="wq137">Y<sup>1</sup></td>
<td align="center" valign="bottom" headers="wq138">&mdash;</td>
<td align="center" valign="bottom" headers="wq139">&mdash;</td>
<td align="center" valign="bottom" headers="wq140">&mdash;</td>
<td align="center" valign="bottom" headers="wq141">&mdash;</td>
<td align="center" valign="bottom" headers="wq142">&mdash;</td>
<td align="center" valign="bottom" headers="wq143">&mdash;</td>
</tr>
<tr>
<td align="left" valign="bottom" headers="wq132">INTEGER</td>
<td align="center" valign="bottom" headers="wq133">Y</td>
<td align="center" valign="bottom" headers="wq134">Y</td>
<td align="center" valign="bottom" headers="wq135">Y</td>
<td align="center" valign="bottom" headers="wq136">Y</td>
<td align="center" valign="bottom" headers="wq137">Y<sup>1</sup></td>
<td align="center" valign="bottom" headers="wq138">&mdash;</td>
<td align="center" valign="bottom" headers="wq139">&mdash;</td>
<td align="center" valign="bottom" headers="wq140">&mdash;</td>
<td align="center" valign="bottom" headers="wq141">&mdash;</td>
<td align="center" valign="bottom" headers="wq142">&mdash;</td>
<td align="center" valign="bottom" headers="wq143">&mdash;</td>
</tr>
<tr>
<td align="left" valign="bottom" headers="wq132">BIGINT</td>
<td align="center" valign="bottom" headers="wq133">Y</td>
<td align="center" valign="bottom" headers="wq134">Y</td>
<td align="center" valign="bottom" headers="wq135">Y</td>
<td align="center" valign="bottom" headers="wq136">Y</td>
<td align="center" valign="bottom" headers="wq137">Y<sup>1</sup></td>
<td align="center" valign="bottom" headers="wq138">&mdash;</td>
<td align="center" valign="bottom" headers="wq139">&mdash;</td>
<td align="center" valign="bottom" headers="wq140">&mdash;</td>
<td align="center" valign="bottom" headers="wq141">&mdash;</td>
<td align="center" valign="bottom" headers="wq142">&mdash;</td>
<td align="center" valign="bottom" headers="wq143">&mdash;</td>
</tr>
<tr>
<td align="left" valign="bottom" headers="wq132">DECIMAL</td>
<td align="center" valign="bottom" headers="wq133">Y</td>
<td align="center" valign="bottom" headers="wq134">Y</td>
<td align="center" valign="bottom" headers="wq135">Y</td>
<td align="center" valign="bottom" headers="wq136">Y</td>
<td align="center" valign="bottom" headers="wq137">Y<sup>1</sup></td>
<td align="center" valign="bottom" headers="wq138">&mdash;</td>
<td align="center" valign="bottom" headers="wq139">&mdash;</td>
<td align="center" valign="bottom" headers="wq140">&mdash;</td>
<td align="center" valign="bottom" headers="wq141">&mdash;</td>
<td align="center" valign="bottom" headers="wq142">&mdash;</td>
<td align="center" valign="bottom" headers="wq143">&mdash;</td>
</tr>
<tr>
<td align="left" valign="bottom" headers="wq132">NUMERIC</td>
<td align="center" valign="bottom" headers="wq133">Y</td>
<td align="center" valign="bottom" headers="wq134">Y</td>
<td align="center" valign="bottom" headers="wq135">Y</td>
<td align="center" valign="bottom" headers="wq136">Y</td>
<td align="center" valign="bottom" headers="wq137">Y<sup>1</sup></td>
<td align="center" valign="bottom" headers="wq138">&mdash;</td>
<td align="center" valign="bottom" headers="wq139">&mdash;</td>
<td align="center" valign="bottom" headers="wq140">&mdash;</td>
<td align="center" valign="bottom" headers="wq141">&mdash;</td>
<td align="center" valign="bottom" headers="wq142">&mdash;</td>
<td align="center" valign="bottom" headers="wq143">&mdash;</td>
</tr>
<tr>
<td align="left" valign="bottom" headers="wq132">REAL</td>
<td align="center" valign="bottom" headers="wq133">Y</td>
<td align="center" valign="bottom" headers="wq134">Y</td>
<td align="center" valign="bottom" headers="wq135">Y</td>
<td align="center" valign="bottom" headers="wq136">Y</td>
<td align="center" valign="bottom" headers="wq137">Y<sup>1</sup></td>
<td align="center" valign="bottom" headers="wq138">&mdash;</td>
<td align="center" valign="bottom" headers="wq139">&mdash;</td>
<td align="center" valign="bottom" headers="wq140">&mdash;</td>
<td align="center" valign="bottom" headers="wq141">&mdash;</td>
<td align="center" valign="bottom" headers="wq142">&mdash;</td>
<td align="center" valign="bottom" headers="wq143">&mdash;</td>
</tr>
<tr>
<td align="left" valign="bottom" headers="wq132">DOUBLE</td>
<td align="center" valign="bottom" headers="wq133">Y</td>
<td align="center" valign="bottom" headers="wq134">Y</td>
<td align="center" valign="bottom" headers="wq135">Y</td>
<td align="center" valign="bottom" headers="wq136">Y</td>
<td align="center" valign="bottom" headers="wq137">Y<sup>1</sup></td>
<td align="center" valign="bottom" headers="wq138">&mdash;</td>
<td align="center" valign="bottom" headers="wq139">&mdash;</td>
<td align="center" valign="bottom" headers="wq140">&mdash;</td>
<td align="center" valign="bottom" headers="wq141">&mdash;</td>
<td align="center" valign="bottom" headers="wq142">&mdash;</td>
<td align="center" valign="bottom" headers="wq143">&mdash;</td>
</tr>
<tr>
<td align="left" valign="bottom" headers="wq132">CHAR</td>
<td align="center" valign="bottom" headers="wq133">Y</td>
<td align="center" valign="bottom" headers="wq134">Y</td>
<td align="center" valign="bottom" headers="wq135">Y</td>
<td align="center" valign="bottom" headers="wq136">Y</td>
<td align="center" valign="bottom" headers="wq137">Y<sup>1</sup></td>
<td align="center" valign="bottom" headers="wq138">Y</td>
<td align="center" valign="bottom" headers="wq139">Y</td>
<td align="center" valign="bottom" headers="wq140">Y</td>
<td align="center" valign="bottom" headers="wq141">Y</td>
<td align="center" valign="bottom" headers="wq142">Y</td>
<td align="center" valign="bottom" headers="wq143">&mdash;</td>
</tr>
<tr>
<td align="left" valign="bottom" headers="wq132">VARCHAR</td>
<td align="center" valign="bottom" headers="wq133">Y</td>
<td align="center" valign="bottom" headers="wq134">Y</td>
<td align="center" valign="bottom" headers="wq135">Y</td>
<td align="center" valign="bottom" headers="wq136">Y</td>
<td align="center" valign="bottom" headers="wq137">Y<sup>1</sup></td>
<td align="center" valign="bottom" headers="wq138">Y</td>
<td align="center" valign="bottom" headers="wq139">Y</td>
<td align="center" valign="bottom" headers="wq140">Y</td>
<td align="center" valign="bottom" headers="wq141">Y</td>
<td align="center" valign="bottom" headers="wq142">Y</td>
<td align="center" valign="bottom" headers="wq143">&mdash;</td>
</tr>
<tr>
<td align="left" valign="bottom" headers="wq132">CLOB</td>
<td align="center" valign="bottom" headers="wq133">Y</td>
<td align="center" valign="bottom" headers="wq134">Y</td>
<td align="center" valign="bottom" headers="wq135">Y</td>
<td align="center" valign="bottom" headers="wq136">Y</td>
<td align="center" valign="bottom" headers="wq137">Y<sup>1</sup></td>
<td align="center" valign="bottom" headers="wq138">Y</td>
<td align="center" valign="bottom" headers="wq139">Y</td>
<td align="center" valign="bottom" headers="wq140">Y</td>
<td align="center" valign="bottom" headers="wq141">Y</td>
<td align="center" valign="bottom" headers="wq142">Y</td>
<td align="center" valign="bottom" headers="wq143">&mdash;</td>
</tr>
<tr>
<td align="left" valign="bottom" headers="wq132">GRAPHIC</td>
<td align="center" valign="bottom" headers="wq133">Y<sup>1</sup></td>
<td align="center" valign="bottom" headers="wq134">Y<sup>1</sup></td>
<td align="center" valign="bottom" headers="wq135">Y<sup>1</sup></td>
<td align="center" valign="bottom" headers="wq136">Y<sup>1</sup></td>
<td align="center" valign="bottom" headers="wq137">Y</td>
<td align="center" valign="bottom" headers="wq138">Y</td>
<td align="center" valign="bottom" headers="wq139">Y<sup>1</sup></td>
<td align="center" valign="bottom" headers="wq140">Y<sup>1</sup></td>
<td align="center" valign="bottom" headers="wq141">Y<sup>1</sup></td>
<td align="center" valign="bottom" headers="wq142">&mdash;</td>
<td align="center" valign="bottom" headers="wq143">&mdash;</td>
</tr>
<tr>
<td align="left" valign="bottom" headers="wq132">VARGRAPHIC</td>
<td align="center" valign="bottom" headers="wq133">Y<sup>1</sup></td>
<td align="center" valign="bottom" headers="wq134">Y<sup>1</sup></td>
<td align="center" valign="bottom" headers="wq135">Y<sup>1</sup></td>
<td align="center" valign="bottom" headers="wq136">Y<sup>1</sup></td>
<td align="center" valign="bottom" headers="wq137">Y</td>
<td align="center" valign="bottom" headers="wq138">Y</td>
<td align="center" valign="bottom" headers="wq139">Y<sup>1</sup></td>
<td align="center" valign="bottom" headers="wq140">Y<sup>1</sup></td>
<td align="center" valign="bottom" headers="wq141">Y<sup>1</sup></td>
<td align="center" valign="bottom" headers="wq142">&mdash;</td>
<td align="center" valign="bottom" headers="wq143">&mdash;</td>
</tr>
<tr>
<td align="left" valign="bottom" headers="wq132">DBCLOB</td>
<td align="center" valign="bottom" headers="wq133">Y<sup>1</sup></td>
<td align="center" valign="bottom" headers="wq134">Y<sup>1</sup></td>
<td align="center" valign="bottom" headers="wq135">Y<sup>1</sup></td>
<td align="center" valign="bottom" headers="wq136">Y<sup>1</sup></td>
<td align="center" valign="bottom" headers="wq137">Y</td>
<td align="center" valign="bottom" headers="wq138">Y</td>
<td align="center" valign="bottom" headers="wq139">Y<sup>1</sup></td>
<td align="center" valign="bottom" headers="wq140">Y<sup>1</sup></td>
<td align="center" valign="bottom" headers="wq141">Y<sup>1</sup></td>
<td align="center" valign="bottom" headers="wq142">&mdash;</td>
<td align="center" valign="bottom" headers="wq143">&mdash;</td>
</tr>
<tr>
<td align="left" valign="bottom" headers="wq132">BINARY</td>
<td align="center" valign="bottom" headers="wq133">&mdash;</td>
<td align="center" valign="bottom" headers="wq134">&mdash;</td>
<td align="center" valign="bottom" headers="wq135">&mdash;</td>
<td align="center" valign="bottom" headers="wq136">&mdash;</td>
<td align="center" valign="bottom" headers="wq137">&mdash;</td>
<td align="center" valign="bottom" headers="wq138">Y</td>
<td align="center" valign="bottom" headers="wq139">&mdash;</td>
<td align="center" valign="bottom" headers="wq140">&mdash;</td>
<td align="center" valign="bottom" headers="wq141">&mdash;</td>
<td align="center" valign="bottom" headers="wq142">&mdash;</td>
<td align="center" valign="bottom" headers="wq143">&mdash;</td>
</tr>
<tr>
<td align="left" valign="bottom" headers="wq132">VARBINARY</td>
<td align="center" valign="bottom" headers="wq133">&mdash;</td>
<td align="center" valign="bottom" headers="wq134">&mdash;</td>
<td align="center" valign="bottom" headers="wq135">&mdash;</td>
<td align="center" valign="bottom" headers="wq136">&mdash;</td>
<td align="center" valign="bottom" headers="wq137">&mdash;</td>
<td align="center" valign="bottom" headers="wq138">Y</td>
<td align="center" valign="bottom" headers="wq139">&mdash;</td>
<td align="center" valign="bottom" headers="wq140">&mdash;</td>
<td align="center" valign="bottom" headers="wq141">&mdash;</td>
<td align="center" valign="bottom" headers="wq142">&mdash;</td>
<td align="center" valign="bottom" headers="wq143">&mdash;</td>
</tr>
<tr>
<td align="left" valign="bottom" headers="wq132">BLOB</td>
<td align="center" valign="bottom" headers="wq133">&mdash;</td>
<td align="center" valign="bottom" headers="wq134">&mdash;</td>
<td align="center" valign="bottom" headers="wq135">&mdash;</td>
<td align="center" valign="bottom" headers="wq136">&mdash;</td>
<td align="center" valign="bottom" headers="wq137">&mdash;</td>
<td align="center" valign="bottom" headers="wq138">Y</td>
<td align="center" valign="bottom" headers="wq139">&mdash;</td>
<td align="center" valign="bottom" headers="wq140">&mdash;</td>
<td align="center" valign="bottom" headers="wq141">&mdash;</td>
<td align="center" valign="bottom" headers="wq142">&mdash;</td>
<td align="center" valign="bottom" headers="wq143">&mdash;</td>
</tr>
<tr>
<td align="left" valign="bottom" headers="wq132">DATE</td>
<td align="center" valign="bottom" headers="wq133">&mdash;</td>
<td align="center" valign="bottom" headers="wq134">&mdash;</td>
<td align="center" valign="bottom" headers="wq135">&mdash;</td>
<td align="center" valign="bottom" headers="wq136">Y</td>
<td align="center" valign="bottom" headers="wq137">Y<sup>1</sup></td>
<td align="center" valign="bottom" headers="wq138">&mdash;</td>
<td align="center" valign="bottom" headers="wq139">Y</td>
<td align="center" valign="bottom" headers="wq140">&mdash;</td>
<td align="center" valign="bottom" headers="wq141">Y</td>
<td align="center" valign="bottom" headers="wq142">&mdash;</td>
<td align="center" valign="bottom" headers="wq143">&mdash;</td>
</tr>
<tr>
<td align="left" valign="bottom" headers="wq132">TIME</td>
<td align="center" valign="bottom" headers="wq133">&mdash;</td>
<td align="center" valign="bottom" headers="wq134">&mdash;</td>
<td align="center" valign="bottom" headers="wq135">&mdash;</td>
<td align="center" valign="bottom" headers="wq136">Y</td>
<td align="center" valign="bottom" headers="wq137">Y<sup>1</sup></td>
<td align="center" valign="bottom" headers="wq138">&mdash;</td>
<td align="center" valign="bottom" headers="wq139">&mdash;</td>
<td align="center" valign="bottom" headers="wq140">Y</td>
<td align="center" valign="bottom" headers="wq141">Y</td>
<td align="center" valign="bottom" headers="wq142">&mdash;</td>
<td align="center" valign="bottom" headers="wq143">&mdash;</td>
</tr>
<tr>
<td align="left" valign="bottom" headers="wq132">TIMESTAMP</td>
<td align="center" valign="bottom" headers="wq133">&mdash;</td>
<td align="center" valign="bottom" headers="wq134">&mdash;</td>
<td align="center" valign="bottom" headers="wq135">&mdash;</td>
<td align="center" valign="bottom" headers="wq136">Y</td>
<td align="center" valign="bottom" headers="wq137">Y<sup>1</sup></td>
<td align="center" valign="bottom" headers="wq138">&mdash;</td>
<td align="center" valign="bottom" headers="wq139">Y</td>
<td align="center" valign="bottom" headers="wq140">Y</td>
<td align="center" valign="bottom" headers="wq141">Y</td>
<td align="center" valign="bottom" headers="wq142">&mdash;</td>
<td align="center" valign="bottom" headers="wq143">&mdash;</td>
</tr>
<tr>
<td align="left" valign="bottom" headers="wq132">ROWID</td>
<td align="center" valign="bottom" headers="wq133">&mdash;</td>
<td align="center" valign="bottom" headers="wq134">&mdash;</td>
<td align="center" valign="bottom" headers="wq135">&mdash;</td>
<td align="center" valign="bottom" headers="wq136">Y</td>
<td align="center" valign="bottom" headers="wq137">&mdash;</td>
<td align="center" valign="bottom" headers="wq138">Y</td>
<td align="center" valign="bottom" headers="wq139">&mdash;</td>
<td align="center" valign="bottom" headers="wq140">&mdash;</td>
<td align="center" valign="bottom" headers="wq141">&mdash;</td>
<td align="center" valign="bottom" headers="wq142">Y</td>
<td align="center" valign="bottom" headers="wq143">&mdash;</td>
</tr>
<tr>
<td align="left" valign="bottom" headers="wq132">DATALINK</td>
<td align="center" valign="bottom" headers="wq133">&mdash;</td>
<td align="center" valign="bottom" headers="wq134">&mdash;</td>
<td align="center" valign="bottom" headers="wq135">&mdash;</td>
<td align="center" valign="bottom" headers="wq136">&mdash;</td>
<td align="center" valign="bottom" headers="wq137">&mdash;</td>
<td align="center" valign="bottom" headers="wq138">&mdash;</td>
<td align="center" valign="bottom" headers="wq139">&mdash;</td>
<td align="center" valign="bottom" headers="wq140">&mdash;</td>
<td align="center" valign="bottom" headers="wq141">&mdash;</td>
<td align="center" valign="bottom" headers="wq142">&mdash;</td>
<td align="center" valign="bottom" headers="wq143">Y</td>
</tr>
<tr>
<td colspan="12" align="left" valign="top" headers="wq132 wq133 wq134 wq135 wq136 wq137 wq138 wq139 wq140 wq141 wq142 wq143">
<a name="wq144"></a>
<div class="notetitle" id="wq144">Notes:</div>
<div class="notebody">
<p><sup>1</sup> Conversion is only
supported for UTF-16 or UCS-2 graphic.</p></div></td>
</tr>
</tbody>
</table>
<p>The following table describes the rules for casting to a data type:</p>
<a name="opcast2"></a>
<table id="opcast2" width="100%" summary="" border="1" frame="hsides" rules="rows">
<caption>Table 14. Rules for Casting to a Data Type</caption>
<thead valign="bottom">
<tr>
<th id="wq145" width="25%" align="left" valign="bottom">Target Data Type</th>
<th id="wq146" width="75%" align="left" valign="bottom">Rules</th>
</tr>
</thead>
<tbody valign="top">
<tr>
<td align="left" valign="bottom" headers="wq145">SMALLINT</td>
<td align="left" valign="bottom" headers="wq146">See <a href="rbafzmstscale.htm#smifunc">SMALLINT</a>.</td>
</tr>
<tr>
<td align="left" valign="bottom" headers="wq145">INTEGER</td>
<td align="left" valign="bottom" headers="wq146">See <a href="rbafzmstscale.htm#intfunc">INTEGER or INT</a>.</td>
</tr>
<tr>
<td align="left" valign="bottom" headers="wq145">BIGINT</td>
<td align="left" valign="bottom" headers="wq146">See <a href="rbafzmstscale.htm#bigfunc">BIGINT</a>.</td>
</tr>
<tr>
<td align="left" valign="bottom" headers="wq145">DECIMAL</td>
<td align="left" valign="bottom" headers="wq146">See <a href="rbafzmstscale.htm#scadec">DECIMAL or DEC</a>.</td>
</tr>
<tr>
<td align="left" valign="bottom" headers="wq145">NUMERIC</td>
<td align="left" valign="bottom" headers="wq146">See <a href="rbafzmstscale.htm#scazoned">ZONED</a>.</td>
</tr>
<tr>
<td align="left" valign="bottom" headers="wq145">REAL</td>
<td align="left" valign="bottom" headers="wq146">See <a href="rbafzmstscale.htm#realfun">REAL</a>.</td>
</tr>
<tr>
<td align="left" valign="bottom" headers="wq145">DOUBLE</td>
<td align="left" valign="bottom" headers="wq146">See <a href="rbafzmstscale.htm#dblprc">DOUBLE_PRECISION or DOUBLE</a>.</td>
</tr>
<tr>
<td align="left" valign="bottom" headers="wq145">CHAR</td>
<td align="left" valign="bottom" headers="wq146">See <a href="rbafzmstscale.htm#scachar">CHAR</a>.</td>
</tr>
<tr>
<td align="left" valign="bottom" headers="wq145">VARCHAR</td>
<td align="left" valign="bottom" headers="wq146">See the <a href="rbafzmstscale.htm#scavarchar">VARCHAR</a>.</td>
</tr>
<tr>
<td align="left" valign="bottom" headers="wq145">CLOB</td>
<td align="left" valign="bottom" headers="wq146">See <a href="rbafzmstscale.htm#scaclob">CLOB</a>.</td>
</tr>
<tr>
<td align="left" valign="top" headers="wq145">GRAPHIC</td>
<td align="left" valign="bottom" headers="wq146">
<p>If the source data type
is a character string, see the rules for string assignment to a variable in <a href="rbafzmstch2bas.htm#ch2bas">Assignments and comparisons</a>.</p>
<p>Otherwise, see <a href="rbafzmstscale.htm#scagraphic">GRAPHIC</a>.</p></td>
</tr>
<tr>
<td align="left" valign="top" headers="wq145">VARGRAPHIC</td>
<td align="left" valign="bottom" headers="wq146">
<p>If the source data type
is a character string, see the rules for string assignment to a variable in <a href="rbafzmstch2bas.htm#ch2bas">Assignments and comparisons</a>.</p>
<p>Otherwise, see <a href="rbafzmstscale.htm#scavargraph">VARGRAPHIC</a>.</p></td>
</tr>
<tr>
<td align="left" valign="bottom" headers="wq145">DBCLOB</td>
<td align="left" valign="bottom" headers="wq146">See <a href="rbafzmstscale.htm#scadbclob">DBCLOB</a>.</td>
</tr>
<tr>
<td align="left" valign="bottom" headers="wq145">BINARY</td>
<td align="left" valign="bottom" headers="wq146">See <a href="rbafzmstscale.htm#scabinary">BINARY</a>.</td>
</tr>
<tr>
<td align="left" valign="bottom" headers="wq145">VARBINARY</td>
<td align="left" valign="bottom" headers="wq146">See <a href="rbafzmstscale.htm#scavarbinary">VARBINARY</a>.</td>
</tr>
<tr>
<td align="left" valign="bottom" headers="wq145">BLOB</td>
<td align="left" valign="bottom" headers="wq146">See <a href="rbafzmstscale.htm#scablob">BLOB</a>.</td>
</tr>
<tr>
<td align="left" valign="bottom" headers="wq145">DATE</td>
<td align="left" valign="bottom" headers="wq146">See <a href="rbafzmstscale.htm#scadate">DATE</a>.</td>
</tr>
<tr>
<td align="left" valign="bottom" headers="wq145">TIME</td>
<td align="left" valign="bottom" headers="wq146">See <a href="rbafzmstscale.htm#scatime">TIME</a>.</td>
</tr>
<tr>
<td align="left" valign="top" headers="wq145">TIMESTAMP</td>
<td align="left" valign="bottom" headers="wq146">
<p>If the source data type
is a string, see <a href="rbafzmstscale.htm#scatimestamp">TIMESTAMP</a>, where one operand is specified.</p>
<p>If the source data type is a DATE, the timestamp is composed of the
specified date and a time of 00:00:00.</p>
<p>If the source data type is a
TIME, the timestamp is composed of the CURRENT_DATE and the specified time.</p></td>
</tr>
<tr>
<td align="left" valign="bottom" headers="wq145">DATALINK</td>
<td align="left" valign="bottom" headers="wq146">See the rules for DataLink
assignments in <a href="rbafzmstch2bas.htm#ch2bas">Assignments and comparisons</a>.</td>
</tr>
<tr>
<td align="left" valign="bottom" headers="wq145">ROWID</td>
<td align="left" valign="bottom" headers="wq146">See <a href="rbafzmstscale.htm#scarowid">ROWID</a>.</td>
</tr>
</tbody>
</table>
<hr /><br />
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