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<h1 class="topictitle1">ResultSet objects </h1>


<div>
<div class="section"><p>An error that occurs when a SELECT statement is first executed
prevents a <em>ResultSet</em> object from being opened on it. The same error
does not close the <em>ResultSet</em> if it occurs after the <em>ResultSet</em> has
been opened.</p>
</div>

<div class="section"><p>For example, a divide-by-zero error that happens while the <em>executeQuery</em> method
is called on a <em>java.sql.Statement</em> or <em>java.sql.PreparedStatement</em> throws
an exception and returns no result set at all, while if the same error happens
while the <em>next</em> method is called on a <em>ResultSet</em> object, it does
not cause the result set to be closed.</p>
</div>

<div class="section"><p>Errors can happen when a <em>ResultSet</em> is first being created
if the system partially executes the query before the first row is fetched.
This can happen on any query that uses more than one table and on queries
that use aggregates, GROUP BY, ORDER BY, DISTINCT, INTERSECT, EXCEPT, or UNION.</p>
</div>

<div class="section"><p>Closing a <em>Statement</em> causes all open <em>ResultSet</em> objects
on that statement to be closed as well.</p>
</div>

<div class="section"><p>The cursor name for the cursor of a <em>ResultSet</em> can be set
before the statement is executed. However, once it is executed, the cursor
name cannot be altered.</p>
</div>

</div>

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<div class="familylinks">
<div class="parentlink"><strong>Parent topic:</strong> <a href="rrefjdbc40794.html" title="">java.sql.Statement interface</a></div>
</div>
<div class="relconcepts"><strong>Related concepts</strong><br />
<div><a href="crefjavstateautogen.html" title="">Autogenerated keys</a></div>
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