Unsupported versions: 7.4 / 7.3 / 7.2 / 7.1
This documentation is for an unsupported version of PostgreSQL.
You may want to view the same page for the current version, or one of the other supported versions listed above instead.

8.4. Performing Updates

To change data (perform an insert, update, or delete) you use the executeUpdate() method. executeUpdate() is similar to the executeQuery() used to issue a select, however it doesn't return a ResultSet, instead it returns the number of records affected by the insert, update, or delete statement.

Example 8-2. Simple Delete Example

This example will issue a simple delete and print out the number of rows deleted.

int foovalue = 500;
PreparedStatement st = db.prepareStatement("DELETE FROM mytable where columnfoo = ?");
st.setInt(1, foovalue);
int rowsDeleted = st.executeUpdate();
System.out.println(rowsDeleted + " rows deleted");