Question

我有以下查询在SQL Server 2008中正常工作，但当我在ADO.NET中连接时，它显示此错误：

多部分标识符＆＃34; v.ClientId＆＃34;无法受约束多部分标识符＆＃34; v.ClientId＆＃34;无法受约束多部分标识符＆＃34; v.ClientID＆＃34;无法受约束多部分标识符＆＃34; v.Fare＆＃34;无法受约束多部分标识符＆＃34; v.ClientId＆＃34;无法受约束。

查询：

SELECT
    f.ID, f.ClientID, vc.Name, 
    f.Fare as FixFares, v.Fare as VehicleFare, 
    f.FromPostCode, f.ToPostCode, f.[From], f.[To],
    v.ClientId, v.IsActive, v.VehicleID, vc.ID
FROM
    VehicleFixeFare AS v
INNER JOIN 
    FixFare f ON v.ClientId = f.ClientId 
INNER JOIN
    Vehicle vc ON v.ClientId = vc.ClientId
WHERE
    v.ClientID = 159

以下代码

conn = new SqlConnection(Connection1);
conn.Open();

//  var LIST=(from a in General.GetQueryable<Ve>)
string Query = "select f.ID, f.ClientID, vc.Name, f.Fare as FixFares, v.Fare as VehicleFare, f.FromPostCode, "+
               "f.ToPostCode, f.[From], f.[To], v.ClientId, v.IsActive, v.VehicleID, vc.ID " +  
               "from  VehicleFixeFare as v"+
               "inner join FixFare f on v.ClientId = f.ClientId inner join Vehicle vc on v.ClientId = vc.ClientId where v.ClientID =" + ClientID;

SqlDataAdapter ad = new SqlDataAdapter(Query, conn);
dt = new DataTable();

ad.Fill(dt);

Answer 1

我会像这样做代码，它会消除可能导致错误的空间问题，并且更具可读性。

string Query = 
        @"select f.ID, f.ClientID, vc.Name, f.Fare as FixFares, v.Fare as VehicleFare, f.FromPostCode, 
                    f.ToPostCode, f.[From], f.[To], v.ClientId, v.IsActive, v.VehicleID, vc.ID 
            from  VehicleFixeFare as v
            inner join FixFare f on v.ClientId = f.ClientId 
            inner join Vehicle vc on v.ClientId = vc.ClientId where v.ClientID =" + ClientID;

Answer 2

这是由于空间问题。在每行的开头和结尾留一些空间，你的问题就会得到解决。

     1. Remove Grails version 2.5.5 (if this is already installed)
     2. Download/install Grails version 2.5.4
     3. Run basic command grails-createapp. This runs fine and an app is created.
     4. Remove Grails version 2.5.4
     5. Install Grails version 2.5.5 now
     6. Run command - grails createapp (this starts working now)

如何解决这个错误＆＃34;多部分标识符＆＃34;在ado.net

2 个答案: