Question

我正在使用连接到MS Access的C＃Windows应用程序表单。我使用特定查询填充datagridview但发生了这种情况

查询表达式'Model WHERE Status ='AVAILABLE''中的语法错误（缺少运算符）。

关于此查询

OleDbDataAdapter daAvailable = new OleDbDataAdapter（“SELECT Type，Brand，Model，SerialNo，Status，Remarks，RAM，HDD，ODD，VideoCard，PS FROM Available ORDER BY Type，Brand，Model WHERE Status ='AVAILABLE'”，cnn ）;

我该怎么办？

这是我的代码

OleDbConnection cnn = new OleDbConnection（@“Provider = Microsoft.ACE.OLEDB.12.0; Data Source = C：\ Users \ james \ Documents \ Visual Studio 2010 \ Projects \ Vault \ Vault \ VaultDatabase.accdb”）; DataSet dstAvailable = new DataSet（）; DataSet dstData = new DataSet（）; DataSet dstDeployment = new DataSet（）; DataSet dstLog = new DataSet（）;

    public void FillAvailable(DataGridView dgv)
    {
        OleDbDataAdapter daAvailable = new OleDbDataAdapter("SELECT Type, Brand, Model, SerialNo, Status, Remarks, RAM, HDD, ODD, VideoCard, PS FROM Available ORDER BY Type, Brand, Model WHERE Status = 'AVAILABLE'", cnn);
        daAvailable.Fill(dstAvailable);
        dgv.DataSource = dstAvailable.Tables[0];
    }

Answer 1

ORDER BY子句应该在SQL

中的WHERE子句之后

所以你的查询应该是：

OleDbDataAdapter daAvailable = new OleDbDataAdapter("SELECT Type, Brand, Model, SerialNo, "+
     "Status, Remarks, RAM, HDD, ODD, VideoCard, PS " + 
     "FROM Available " +
     "WHERE Status = 'AVAILABLE' "+
     "ORDER BY Type, Brand, Model", cnn);

     //The above query is broken down on multiple lines for clarity

Answer 2

像这样写

public void FillAvailable(DataGridView dgv)
{
    OleDbDataAdapter daAvailable = new OleDbDataAdapter("SELECT Type, Brand, Model, SerialNo, Status, Remarks, RAM, HDD, ODD, VideoCard, PS FROM Available  WHERE Status = 'AVAILABLE' ORDER BY Type, Brand, Model", cnn);
    daAvailable.Fill(dstAvailable);
    dgv.DataSource = dstAvailable.Tables[0];
}

* 按顺序排列*

Answer 3

ORDER BY

总是在WHERE子句之后，它应该是：

OleDbDataAdapter daAvailable = new OleDbDataAdapter("SELECT Type, Brand, Model, SerialNo, Status, Remarks, RAM, HDD, ODD, VideoCard, PS FROM Available WHERE Status = 'AVAILABLE'  ORDER BY Type, Brand, Model", cnn);

查询表达式状态中的语法错误（缺少运算符）='可用'

3 个答案: