附近有语法错误（'附近“=”

Question

我试图做的是更新条目，如果不存在的话 - 创建一个新的

This是我的东西。试图跟随

我得到一个语法错误例外，我不知道什么是错的

---

这就是如何使我的表：。

CREATE TABLE [dbo].[Rides] (
    [phone]  VARCHAR (32) NOT NULL, 
    [destination] VARCHAR (50) NOT NULL, 
    [departure] VARCHAR (50) NOT NULL, 
    [time]  DATETIME  NOT NULL, 
    [comment]  NVARCHAR (50) NOT NULL, 
    PRIMARY KEY CLUSTERED ([phone] ASC) 
); 

这是我的查询：

SqlCommand command = connection.CreateCommand(); 
command.CommandText = 
@"UPDATE Rides SET (destination=@Dest, departure=@Depart, time=@Time, comment=@Comment) WHERE phone=@UName 
IF (@@ROWCOUNT=0) 
    INSERT INTO Rides VALUES (destination=@Dest, departure=@Depart, time=@Time, comment=@Comment)"; 

command.Parameters.AddWithValue("@UName", entry.phone); 
command.Parameters.AddWithValue("@Dest", entry.destinationID); 
command.Parameters.AddWithValue("@Depart", entry.departureID); 
command.Parameters.AddWithValue("@Time", entry.time.ToString("yyyy-MM-dd HH:mm:ss:fff")); 
command.Parameters.AddWithValue("@Comment", entry.comment); 
command.ExecuteNonQuery(); 

这是entry：

public struct Entry 
{ 
    public string phone; 
    public string destinationID; 
    public string departureID; 
    public DateTime time; 
    public string comment; 
} 

这是我的错误：

An exception of type 'System.Data.SqlClient.SqlException' occurred in System.Data.dll but was not handled in user code

Additional information: Incorrect syntax near '('.

Incorrect syntax near '='.

堆栈跟踪：

[SqlException (0x80131904): Incorrect syntax near '('. 
Incorrect syntax near '='.] 
    System.Data.SqlClient.SqlConnection.OnError(SqlException exception, Boolean breakConnection, Action`1 wrapCloseInAction) +2442126 
    System.Data.SqlClient.SqlInternalConnection.OnError(SqlException exception, Boolean breakConnection, Action`1 wrapCloseInAction) +5736904 
    System.Data.SqlClient.TdsParser.ThrowExceptionAndWarning(TdsParserStateObject stateObj, Boolean callerHasConnectionLock, Boolean asyncClose) +628 
    System.Data.SqlClient.TdsParser.TryRun(RunBehavior runBehavior, SqlCommand cmdHandler, SqlDataReader dataStream, BulkCopySimpleResultSet bulkCopyHandler, TdsParserStateObject stateObj, Boolean& dataReady) +3731 
    System.Data.SqlClient.SqlCommand.FinishExecuteReader(SqlDataReader ds, RunBehavior runBehavior, String resetOptionsString) +225 
    System.Data.SqlClient.SqlCommand.RunExecuteReaderTds(CommandBehavior cmdBehavior, RunBehavior runBehavior, Boolean returnStream, Boolean async, Int32 timeout, Task& task, Boolean asyncWrite, SqlDataReader ds, Boolean describeParameterEncryptionRequest) +2026 
    System.Data.SqlClient.SqlCommand.RunExecuteReader(CommandBehavior cmdBehavior, RunBehavior runBehavior, Boolean returnStream, String method, TaskCompletionSource`1 completion, Int32 timeout, Task& task, Boolean asyncWrite) +375 
    System.Data.SqlClient.SqlCommand.InternalExecuteNonQuery(TaskCompletionSource`1 completion, String methodName, Boolean sendToPipe, Int32 timeout, Boolean asyncWrite) +337 
    System.Data.SqlClient.SqlCommand.ExecuteNonQuery() +280 
    RidesDatabaseAccessor.updateEntry(Entry entry) in c:\Users\Climax708\Documents\Programming\TrempLehayal\App_Code\RidesDatabaseAccessor.cs:145 
    newride.Page_Load(Object sender, EventArgs e) in c:\Users\Climax708\Documents\Programming\TrempLehayal\newride.aspx.cs:75 
    System.Web.Util.CalliEventHandlerDelegateProxy.Callback(Object sender, EventArgs e) +51 
    System.Web.UI.Control.OnLoad(EventArgs e) +95 
    System.Web.UI.Control.LoadRecursive() +59 
    System.Web.UI.Page.ProcessRequestMain(Boolean includeStagesBeforeAsyncPoint, Boolean includeStagesAfterAsyncPoint) +2952 

Answer 1

我所做的弗洛翼变化：

1. 我加了你的两个报表（以下简称UPDATE和 的INSERT）之间的分号。
2. 我删除括号从UPDATE声明（他们不是 需要）

3. 我纠正你的INSERT语句的语法。列名 必须在VALUES之前在其自己的括号声明 中单独给出。

   command.CommandText = @"UPDATE Rides 
       SET destination=@Dest, departure=@Depart, time=@Time, comment=@Comment 
       WHERE phone=@UName; 
       IF (@@ROWCOUNT=0) 
        INSERT INTO Rides (destination, departure, time, comment) 
        VALUES (@Dest, @Depart, @Time, @Comment)"; 
   

Answer 2

我想你应该尝试

@“UPDATE游乐设施设置目的地= @目的地，出发= @出发，时间= @时间，评论= @评论WHERE电话= @ UNAME

insted的您更新查询

Answer 3

在你更新你一定不是（）绕柱使用的集合

UPDATE Rides 
SET destination = @Dest, 
    departure = @Depart, 
    time = @Time, 
    comment = @Comment 
WHERE phone = @UName