import java.io.FileInputStream;
import java.sql.*;
import java.util.Properties;
public class UserCheck {
    public static void main(String[] args) throws Exception {
        Properties props = new Properties();
        try (FileInputStream in = new FileInputStream(args[0])) { props.load(in); }
        try (Connection conn = DriverManager.getConnection(props.getProperty("url"), props.getProperty("username"), props.getProperty("password"))) {
            try (Statement st = conn.createStatement(); ResultSet rs = st.executeQuery("SELECT TOP 0 * FROM b_user")) {
                ResultSetMetaData meta = rs.getMetaData();
                System.out.println("== b_user columns ==");
                for (int i = 1; i <= meta.getColumnCount(); i++) {
                    System.out.printf("  %-20s type=%s autoinc=%s%n", meta.getColumnName(i), meta.getColumnTypeName(i), meta.isAutoIncrement(i));
                }
            }
            try (Statement st = conn.createStatement(); ResultSet rs = st.executeQuery("SELECT b_id, b_account, b_name FROM b_user")) {
                System.out.println("== b_user data ==");
                while (rs.next()) System.out.printf("  b_id=%s b_account=%s b_name=%s%n", rs.getString("b_id"), rs.getString("b_account"), rs.getString("b_name"));
            }
            try (Statement st = conn.createStatement(); ResultSet rs = st.executeQuery("SELECT is_identity FROM sys.columns WHERE object_id=OBJECT_ID('b_user') AND name='b_id'")) {
                rs.next(); System.out.println("b_user.b_id is_identity=" + rs.getBoolean("is_identity"));
            }
        }
    }
}