const pool = new sql.ConnectionPool(DatabaseConfig.config);

    pool.connect().then(function () {
        //6.
        debugger;
        var request = new sql.Request(pool);
        //7.
        request.query("select * from [dbo].[tbl_user]").then(function (recordSet) {
            debugger;
            console.log(recordSet);
            sql.close();
        }).catch(function (err) {
            //8.
            debugger;
            console.log(err);
            sql.close();
        });
    }).catch(function (err) {
        //9.
        debugger;
        console.log(err);
    });

config: {
    server: 'azureserver',
    options: {
        database: 'cccc',
        encrypt: true,
        port: 1433
    },
    user: 'ccc',
    password: 'ccccc'
}