Question

我正在使用以下select语句从excel中提取数据并将其放入数据表中。那里有一个坏行，我不想接，所以这部分[Plan] <>'PLAN_BO'但是它不适用于其他两个OR语句。 [计划]应该是日期时间列，但有一行额外的文字。

[Plan] <>'PLAN_BO'或[Plan]的组合在一起无效，但三个组合在一起无效。

 comm.CommandText = "Select Category, [Project ID], Package, [Design ID], LLW, Bldg, School, [Project Description], [Doc Avail], [Plan] from [ca_rpt$] where [Plan] <> 'PLAN_BO' or [Plan] is null or [Plan] >= DATE() order by Category, [Project ID], Package, [Design ID], LLW";

有没有一种方法可以偏移第一行，因为那是坏行，但不是行标题。我在语句末尾尝试了“偏移1行”，但是它没有用。

编辑：当前状况

（ISDATE（[Bid Open Plan]和[Bid Open Plan]> = DATE（））或[Bid Open Plan]为空

[开标计划]> = DATE（）被忽略。

 using (OleDbConnection conn = new OleDbConnection())
            {
                System.Data.DataTable dt = new System.Data.DataTable();
                conn.ConnectionString = "Provider=Microsoft.ACE.OLEDB.12.0;Data Source=" + path + ";" + "Extended Properties='Excel 12.0 Xml;HDR=YES;IMEX=1'";
                using (OleDbCommand comm = new OleDbCommand())
                {
                    comm.CommandText = "Select Category, [Project ID], Package, [Design ID], LLW, Bldg, School, [Project Description], [Pkg#], [Doc Available], [Bid Open Plan] from(Select Category, [Project ID], Package, [Design ID], LLW, Bldg, School, [Project Description], [Pkg#], [Doc Available], [Bid Open Plan] from [ca_rpt$] where ISDATE([Bid Open Plan]) or [Bid Open Plan] is null) Where [Bid Open Plan] >= DATE() order by Mincat, Minse, [Pkg#], [Project ID], Package, [Design ID], LLW";
                    comm.Connection = conn;
                    using (OleDbDataAdapter da = new OleDbDataAdapter())
                    {
                        da.SelectCommand = comm;
                        da.Fill(dt);

Answer 1

可能您需要检查列值是否为有效日期。您可以使用ISDATE来检查值是否为有效日期，并仅返回有效日期。

  Select Category, [Project ID], Package, [Design ID], LLW, Bldg, School, 
    [Project Description], [Doc Avail], [Bid Open Plan] 

    FROM(
          Select Category, [Project ID], Package, [Design ID], LLW, Bldg, School, [Project Description], [Doc Avail], [Bid Open Plan]
          from [ca_rpt$]
          where ISDATE([Bid Open Plan]) =1 or [Bid Open Plan] is null 
    )
    WHERE [Bid Open Plan]>=Date()
    order by Category, [Project ID], Package, [Design ID], LLW

检查此链接Documentation on ISDATE()

OleDB Select命令不适用于多个OR语句（C＃）

1 个答案: