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完整的錯誤是:如何解決錯誤:「子查詢返回多個值」。 !當子查詢跟隨用作表達式不允許=,=,<, <= , >,> =或
Subquery returned more than 1 value. Not permitted when subquery follows =, !=, <, <= , >, >= or used as an expression
查詢:
SqlConnection connect = Helper.GetCon;
string query = "select sum(amardate) as[All] ,"+
"(select amardate from Amar where insertdate='" +
DateTime.UtcNow.ToString("s") + "')as[Now]," +
"(select amardate from Amar where insertdate='" +
DateTime.UtcNow.AddDays(-1).ToString("s") + "')as[Last] From Amar";
SqlDataAdapter da = new SqlDataAdapter(query, connect);
DataSet ds = new DataSet();
da.Fill(ds);
return ds;