Go to last row from result set in jdbc with sql server
Solution 1
A default ResultSet object is not updatable and has a cursor that moves forward only. Thus, you can iterate through it only once and only from the first row to the last row.
At code level you can do the following thing
Statement statement = connection.createStatement(ResultSet.TYPE_SCROLL_INSENSITIVE,ResultSet.CONCUR_READ_ONLY);
ResultSet resultSet = statement.executeQuery("select noorder from orders");
resultSet.afterLast();
while (resultSet.previous()) {
String productCode = resultSet.getString("col_one");
String productName = resultSet.getString("col_two");
}
connection.close();
Solution 2
The isLast()
should be what you're looking for.
ResultSet rs = stmt.executeQuery(query);
while(rs.next()) {
if(rs.isLast()) {
// is last row in ResultSet
}
}
Solution 3
Remember to apply an order by
clause otherwise the last entry in your ResultSet
may not be what you expect.
Solution 4
You can use:
connection.prepareStatement(sql, ResultSet.TYPE_SCROLL_INSENSITIVE, ResultSet.CONCUR_READ_ONLY);
bangandi
Updated on November 19, 2020Comments
-
bangandi over 3 years
i try to select from my table, only select the last row. I've tried this :
rset = s.executeQuery("select noorder from orders"); rset.last(); String noorder = rset.getString("noorder");`
rset is resultset, and s is statement. But it throw an exception : ResultSet may only be accessed in a forward direction`
I've tried this to :
if (rset != null) { while(rset.next()){ rset.last(); } }
Am I doing wrong? Any idea? Thanks
Edit : This is the answer, as suggested by @Bhavik-Ambani (thanks for him). And this is my code :
Statement s2 = con.createStatement(ResultSet.TYPE_SCROLL_INSENSITIVE,ResultSet.CONCUR_READ_ONLY); rset = s2.executeQuery("select noorder from orders"); rset.afterLast(); GETLASTINSERTED: while(rset.previous()){ noorder = rset.getString("noorder"); break GETLASTINSERTED;//to read only the last row }
Hope it will be help another. Java rocks!