“/”应用程序中的 Webmatrix 服务器错误。语法不正确答案

【问题标题】：Webmatrix Server Error in '/' Application. Incorrect syntax“/”应用程序中的 Webmatrix 服务器错误。语法不正确
【发布时间】：2015-11-21 01:02:12
【问题描述】：

致力于将一些东西添加到其他人在 Webmatrix 中构建的网站。当我更改 SQL 查询时，它会引发语法错误，即使它以前运行良好。我一直在用这个错误把头撞到墙上。

我所做的只是在 SQL 查询的末尾添加：WHERE ub_acct.afac_status ='A'

“/”应用程序中的服务器错误。

“afac_acct_no”附近的语法不正确。

描述：执行过程中发生了未处理的异常当前的网络请求。请查看堆栈跟踪以获取更多信息有关错误的信息以及它在代码中的来源。

异常详细信息：System.Data.SqlClient.SqlException：不正确 'afac_acct_no' 附近的语法。

来源错误：

foreach (var row in db.Query(selectQueryString, pnumb, accountNo, serviceAddr, address1, address2, drvID, rgtrID, trnsmtrID))

代码是：

    @{
    string selectQueryString = "";
    var db = Database.Open("derpdatabase");
    var output = "";
    bool search = false;
    string pnumb = "";
    string accountNo = "";
    string serviceAddr = "";
    string address1 = "";
    string address2 = "";
    string drvID = "";
    string rgtrID = "";
    string trnsmtrID = "";

    int pnumbNo = 0;
    int accountNoNo = 0;
    int drvid = 0;
    int rgtrid = 0;
    int trnsmtrid = 0;

    if(IsPost)
    {
        pnumb = Request.Form["pnumb"].Trim();
        accountNo = Request.Form["accountNo"].Trim();
        serviceAddr = Request.Form["serviceAddr"].Trim();
        address1 = Request.Form["address1"].Trim();
        address2 = Request.Form["address2"].Trim();
        drvID = Request.Form["drvID"].Trim();


        if (pnumb.IsInt())
        {
            pnumbNo = int.Parse(pnumb);
        }

        if (accountNo.IsInt())
        {
            accountNoNo = int.Parse(accountNo);
        }


         if (drvID.IsInt())
         {
             drvid = int.Parse(drvID);
         }

         if (rgtrID.IsInt())
          {
             rgtrid = int.Parse(rgtrID);
          }

          if (trnsmtrID.IsInt())
           {
             trnsmtrid = int.Parse(trnsmtrID);
           }



        if ( pnumbNo != 0 || accountNoNo != 0 || serviceAddr != "" || address1 != "" || address2 != "" || drvid !=0 || rgtrid !=0 || trnsmtrid !=0)
        {
            selectQueryString = "SELECT afac_pnumb, afac_acct_no, afac_service_addr, afac_addr1, afac_addr2, afmr_driver_id, afmr_touchread_register, afmr_mxu FROM ub_acct JOIN ub_driver_trans ON ub_acct.afac_pnumb = ub_driver_trans.afm_trans_pnumb JOIN ub_driver_register ON ub_driver_trans.afm_driver_id = ub_driver_register.afmr_driver_id WHERE ub_acct.afac_status ='A'";

            search = true;
        }



        if (pnumbNo != 0)
        {
            selectQueryString += "afac_pnumb = @0 AND ";
        }

        if (accountNoNo != 0)
        {
            selectQueryString += "afac_acct_no = @1 AND ";
        }


        if (!String.IsNullOrWhiteSpace(serviceAddr))
        {
            selectQueryString += "afac_service_addr LIKE '%' + CAST(@2 AS nvarchar) + '%' AND ";
        }

        if (!String.IsNullOrWhiteSpace(address1))
        {
            selectQueryString += "afac_addr1 LIKE '%' + CAST(@3 AS nvarchar) + '%' AND ";
        }

        if (!String.IsNullOrWhiteSpace(address2))
        {
            selectQueryString += "afac_addr2 LIKE '%' + CAST(@4 AS nvarchar) + '%' AND ";
        }

        if (drvid != 0)
        {
            selectQueryString += "afmr_driver_id = @5 AND ";
        }  

         if ( rgtrid != 0)
         {
            selectQueryString += "afmr_touchread_regidter = @6 AND ";
         }

         if (trnsmtrid != 0)
          {
            selectQueryString += "afm_mxu = @7 AND ";
          }


        if (selectQueryString.EndsWith(" AND "))
        {
            selectQueryString = selectQueryString.Remove(selectQueryString.Length - 5);
        }
    }
}

<div id="topBar"></div>
<div id="title" class="centerInline centerBlock heavyNarrowFont brownText fillWidth">CIC Search</div><br /><br />
<div id="searchBody" class="centerBlock centerInline fillWidth">
    <form id="searchForm" class="centerInline centerBlock fillWidth" method="post" action="">
        <table id="searchTable" class="centerInline centerBlock fillWidth">
            <tr>
                <td class="left">pnumb:</td>
                <td class="right"><input id="pnumb" name="pnumb" type="text" maxlength="4" /></td>
            </tr>
            <tr>
                <td class="left">Account #:</td>
                <td class="right"><input id="accountNo" name="accountNo" type="text" maxlength="5" /></td>
            </tr>
            <tr>
                <td class="left">Service Address:</td>
                <td class="right"><input id="serviceAddr" name="serviceAddr" type="text" maxlength="75" /></td>
            </tr>
            <tr>
                <td class="left">Address 1:</td>
                <td class="right"><input id="address1" name="address1" type="text" maxlength="75" /></td>
            </tr>
            <tr>
                <td class="left">Address 2:</td>
                <td class="right"><input id="address2" name="address2" type="text" maxlength="75" /></td>
            </tr>
            <tr>
                 <td class="left"><span class="drvID">Driver ID:</span></td>
                 <td class="right"><input id="drvID" name="drvID" type="text" maxlength="16" /></td>
                </tr>
                <tr>


                 <td id="searchBtnCell" class="centerInline" colspan="2">
                    <br />
                    <br />
                    <input type="submit" value="Search" class="button centerBlock" />
                </td>
            </tr>
        </table>
    </form><br />
    <div id="resultContainer">


        @if (IsPost && search == true)
        {
            <hr /><br />


            foreach (var row in db.Query(selectQueryString, pnumb, accountNo, serviceAddr, address1, address2, drvID, rgtrID, trnsmtrID))
            {
                <div class="result fillWidth grayGradient">
                    <span class="resultLabel">pnumb #:&nbsp;</span><span class="resultValue"> @row.afac_pnumb</span><br />
                    <span class="resultLabel">Account #:&nbsp;</span><span class="resultValue"> @row.afac_acct_no</span><br />
                    <span class="resultLabel">Service Address:&nbsp;</span><span class="resultValue"> @row.afac_service_addr</span><br />
                    <span class="resultLabel">Address 1:&nbsp;</span><span class="resultValue"> @row.afac_addr1</span><br />
                    <span class="resultLabel">Address 2:&nbsp;</span><span class="resultValue"> @row.afac_addr2</span><br />
                    <span class="resultLabel">Driver ID:&nbsp;</span><span class="resultValue"> @row.afmr_driver_id</span><br />
                    <span class="resultLabel">Register ID:&nbsp;</span><span class="resultValue"> @row.afmr_touchread_register</span><br />
                    <span class="resultLabel">Transmitter ID:&nbsp;</span><span class="resultValue"> @row.afmr_mxu</span><br />

                </div>
            }



        }
    </div>
</div>
<br /><br />

【问题讨论】：

这不是调试服务。将您的问题减少到核心代码行。
如果您想连接其他条件，您添加的文本末尾需要一个空格，投票关闭，这只是一个错字。
您还需要将 AND 放在辅助条件之前，而不是之后。
我本来只包括核心问题，只是我不知道核心问题在哪里。在末尾添加一个空格没有任何作用。它仍然显示相同的错误。

标签： c# sql-server syntax-error webmatrix

【解决方案1】：

以下是调试此类问题的方法。在 foreach 行之前，放置 @selectQueryString 以便 SQL 字符串显示在输出中。然后通过在 foreach 循环中将 @* 放在 foreach 之前，然后将 *@ 放在右括号 } 之后来注释掉 foreach。循环不会运行，但您会看到 SQL 的基础。这将让您调试不同的路径。

【讨论】：