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<TITLE>Creating an Updatable Result Set (Java Developers Almanac Example)
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<B><A HREF="../java.sql/pkg.html#Updatable Result Sets">Updatable Result Sets</A></B><font color="#666666" class="xsmall-font">
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<h3>e273. Creating an Updatable Result Set</h3>
An updatable result set allows modification to data in a table through
the result set. If the database does not support updatable result
sets, the result sets returned from <code>executeQuery()</code> will be
read-only. To get updatable results, the <code>Statement</code> object used to
create the result sets must have the concurrency type
<code>ResultSet.CONCUR_UPDATABLE</code>.
<P> The query of an updatable result set must specify the primary
key as one of the selected columns and select from only one table.
For some drivers, `<code>SELECT * FROM my_table</code>' will return a read-only
result set, so make sure that you specify the column names.
<P> See also <a href="../java.sql/CanUrs.html" class="eglink"><b>e272</b> Determining If a Database Supports Updatable Result Sets</a>.
<pre> try {
// Create a statement that will return updatable result sets
Statement stmt = <font color="#0066ff"><i>connection</i></font>.createStatement(
ResultSet.<font color="#0066ff"><i>TYPE_SCROLL_SENSITIVE</i></font>, ResultSet.CONCUR_UPDATABLE);
// Primary key col_string must be specified so that the result set is updatable
ResultSet resultSet = stmt.executeQuery("SELECT col_string FROM my_table");
} catch (SQLException e) {
}
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<b>Related Examples</b></font></td>
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e272. <a class="eglink" href="CanUrs.html?l=rel">
Determining If a Database Supports Updatable Result Sets
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e274. <a class="eglink" href="GetConcurrency.html?l=rel">
Determining If a Result Set Is Updatable
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e275. <a class="eglink" href="UpdateRow.html?l=rel">
Updating a Row in a Database Table Using an Updatable Result Set
</a>
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e276. <a class="eglink" href="CancelRowUpdates.html?l=rel">
Cancelling Updates to an Updatable Result Set
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e277. <a class="eglink" href="InsertRow.html?l=rel">
Inserting a Row into a Database Table Using an Updatable Result Set
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e278. <a class="eglink" href="DeleteRow.html?l=rel">
Deleting a Row from a Database Table Using an Updatable Result Set
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e279. <a class="eglink" href="RefreshRow.html?l=rel">
Refreshing a Row in an Updatable Result Set
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See also:
<a class="eglink" href="/egs/java.sql/pkg.html?l=rel#Batching">
Batching
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<a class="eglink" href="/egs/java.sql/pkg.html?l=rel#Connections">
Connections
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<a class="eglink" href="/egs/java.sql/pkg.html?l=rel#Database%20Meta%20Data">
Database Meta Data
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<a class="eglink" href="/egs/java.sql/pkg.html?l=rel#Deleting%20Data">
Deleting Data
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<a class="eglink" href="/egs/java.sql/pkg.html?l=rel#Drivers">
Drivers
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<a class="eglink" href="/egs/java.sql/pkg.html?l=rel#Importing%20and%20Exporting">
Importing and Exporting
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<a class="eglink" href="/egs/java.sql/pkg.html?l=rel#Inserting%20and%20Updating%20Data">
Inserting and Updating Data
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<a class="eglink" href="/egs/java.sql/pkg.html?l=rel#Oracle%20OBJECTs">
Oracle OBJECTs
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<a class="eglink" href="/egs/java.sql/pkg.html?l=rel#Oracle%20VARRAYs">
Oracle VARRAYs
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<a class="eglink" href="/egs/java.sql/pkg.html?l=rel#Procedures%20and%20Functions">
Procedures and Functions
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<a class="eglink" href="/egs/java.sql/pkg.html?l=rel#Retrieving%20Data">
Retrieving Data
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<a class="eglink" href="/egs/java.sql/pkg.html?l=rel#Scrollable%20Result%20Sets">
Scrollable Result Sets
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<a class="eglink" href="/egs/java.sql/pkg.html?l=rel#Tables">
Tables
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