SQL Server CE查询错误（unhandles异常）。 从c＃执行

Question

string query = "Create table " + name + 
               " (Manpower_Name NVARCHAR(50), Instance INT, Start NVARCHAR(30), End NVARCHAR(30));";

I make of this connection string in C# for a SQL Server CE database (a .sdf file). But I am getting an error, as follows:

There was an error parsing the query. [ Token line number = 1,Token line offset = 77,Token in error = End ]

Executed from the function:

public void create_proj_table(string name)
{
    string query = "Create table " + name + " (Manpower_Name NVARCHAR(50), Instance INT, Start NVARCHAR(30), End NVARCHAR(30));";

    //open connection
    if (this.OpenConnection() == true)
    {
        //create command and assign the query and connection from the constructor
        SqlCeCommand cmd = new SqlCeCommand(query, connection);

        //Execute command
        cmd.ExecuteNonQuery();

        //close connection
        this.CloseConnection();
    }
}

Answer 1

End is a keyword that you cannot use in your own tables - use something like EndDate instead.

Also: I would assume Start and End are dates - I would strongly urge you to use DATETIME instad of NVARCHAR(30) for storing those!

So I'd change the CREATE TBALE statement to something like this:

string query =  "CREATE TABLE " + name + 
                " (Manpower_Name NVARCHAR(50), Instance INT, StartDate DATETIME, EndDate DATETIME);";

and then your code should work just fine.

Answer 2

The word END is a reserved keyword in SQL CE. If you need to use it you should enclose in square brakets

string query = "Create table " + name + " (Manpower_Name NVARCHAR(50), " + 
              "Instance INT, Start NVARCHAR(30), [End] NVARCHAR(30));";

Answer 3

END is a reserved word in Sql.

string query = "Create table " + name + " (Manpower_Name NVARCHAR(50), Instance INT, Start NVARCHAR(30), End NVARCHAR(30));";

If you must use it - ie, you don't want to change the name of the row - enclose it with '[]', like this:

string query = "Create table " + name + " (Manpower_Name NVARCHAR(50), Instance INT, Start NVARCHAR(30), [End] NVARCHAR(30));";