import java.io.FileInputStream;
import java.sql.*;
import java.util.Properties;
public class BUserStruct {
    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"))) {
            System.out.println("== b_user column definitions ==");
            String sql =
                "SELECT c.name AS col, t.name AS type, c.max_length, c.precision, c.scale, c.is_nullable, " +
                "       c.is_identity, dc.definition AS default_def, c.column_id " +
                "FROM sys.columns c " +
                "JOIN sys.types t ON t.user_type_id = c.user_type_id " +
                "LEFT JOIN sys.default_constraints dc ON dc.parent_object_id = c.object_id AND dc.parent_column_id = c.column_id " +
                "WHERE c.object_id = OBJECT_ID('b_user') ORDER BY c.column_id";
            try (Statement st = conn.createStatement(); ResultSet rs = st.executeQuery(sql)) {
                while (rs.next()) {
                    String type = rs.getString("type");
                    int maxLen = rs.getInt("max_length");
                    String typeSql;
                    if (type.equals("nvarchar") || type.equals("nchar") || type.equals("varchar") || type.equals("char")) {
                        typeSql = type + (maxLen == -1 ? "(max)" : "(" + (maxLen / (type.startsWith("n") ? 2 : 1)) + ")");
                    } else if (type.equals("decimal") || type.equals("numeric")) {
                        typeSql = type + "(" + rs.getInt("precision") + "," + rs.getInt("scale") + ")";
                    } else { typeSql = type; }
                    System.out.printf("  col=%-22s %-16s null=%s identity=%s default=%s%n",
                            rs.getString("col"), typeSql, rs.getBoolean("is_nullable"),
                            rs.getBoolean("is_identity"), rs.getString("default_def"));
                }
            }
            System.out.println("== b_user 001/002 data ==");
            try (Statement st = conn.createStatement();
                 ResultSet rs = st.executeQuery("SELECT * FROM b_user WHERE b_account IN ('001','002')")) {
                ResultSetMetaData meta = rs.getMetaData();
                while (rs.next()) {
                    StringBuilder sb = new StringBuilder();
                    for (int i = 1; i <= meta.getColumnCount(); i++) {
                        if (i > 1) sb.append(", ");
                        sb.append(meta.getColumnName(i)).append("=").append(rs.getObject(i));
                    }
                    System.out.println("  " + sb);
                }
            }
        }
    }
}