Help me 语法错误 (操作符丢失) 在查询表达式

我用的数据库是access2003,是不是不能同时绑定两个Repeater,应如何解决
语法错误 (操作符丢失) 在查询表达式 '* from图书' 中。

protected void Page_Load(object sender, EventArgs e)
{
string merchandise_name = Request.QueryString["selectnode_name"].ToString();
DataSet dt = new DataSet();
dt = show_data("select top 3 * from " + merchandise_name + " order by 添加日期 desc");
Repeater1.DataSource = dt;
Repeater1.DataBind();
dt.Clear();
dt.Dispose();
dt = show_data("select * from" + merchandise_name);
Repeater2.DataSource = dt;
Repeater2.DataBind();
}
public DataSet show_data(string sql)
{
string accessstring = access_connection + Server.MapPath("App_Data/Pei.mdb");
OleDbConnection conn = new OleDbConnection(accessstring);
conn.Open();
OleDbDataAdapter apater = new OleDbDataAdapter(sql, conn);
DataSet dataset = new DataSet();
apater.Fill(dataset);
apater.Dispose();
conn.Close();
return dataset;
}