Using SQL statements with JDBC

Question

does anyone know if JDBC supports functions like MAX?
how abt a method to find out if a ResultSet is empty?
thanks appreciate any kinda help
meidis

Answer 1

wgower said
Statement stmt = con.createStatement();
ResultSet rs = stmt.executeQuery("select * from titles");
if(rs == null)
system.out.println("No records in this resultset");I am pretty sure that is incorrect.
A statement always returns a result set, unless an exception occurs.
This should do it
  Statement stmt = con.createStatement();
  ResultSet rs = stmt.executeQuery("select * from titles");
  int i = 0;
  while(rs.next()) i++;
  if (i == 0)
    System.out.println("no results");
  rs.close();
  con.close();
. Or even better
  Statement stmt = con.createStatement();
  ResultSet rs = stmt.executeQuery("select count(*) from titles");
  int i = 0;
  if (rs.next())
     i = rs.getInt(1);
  if (i == 0)
    System.out.println("no results");
  rs.close();
  con.close();
. ==================================
JDBC doesn't really support MAX. JDBC is an interface to databases (data sources.) JDBC just passes what you give it along to the driver/database.