The LAST() function returns the last value of the selected column.

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SQL-Server-2008

How the last record database back
error:'last' is not a recognized built-in function name.

C#

public string lastreclettr(string a)
     {
         string s = "";
         command.CommandText = "SELECT last(tnum)  FROM sendletter";
         connection.Open();
         command.Parameters.AddWithValue("@tnum",a);
         SqlDataReader reader = command.ExecuteReader();
        reader.Read();
         if (reader.HasRows)
             s= reader[0].ToString();
         return s;
     }

Posted 11-Apr-11 22:05pm

saeed1364

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Pong D. Panda 12-Apr-11 4:39am

what's the input string a for? you need to use standard naming on your code so its more dev-friendly. If you have an identity column with auto increment property(lets say id), you can use a command like this "
SELECT TOP 1 * from sendletter ORDER BY id DESC"

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Ciumac Sergiu · Answer 1 · 2011-04-11T22:13:00

Hi,
you can try

command.CommandText = "
SELECT TOP 1 rel.tnum  
FROM (SELECT tnum, ROW_NUMBER() OVER(ORDER BY (SELECT 1)) AS row_nr FROM sendletter) AS rel ORDER BY rel.row_nr DESC";

, it will return you the last item in the sendletter table.
Initilly the ROW_NUMBER() will give a number for each ROW returned in the inner select (thus row_nr will be [1...n]). Then you can order it inversely and select the TOP 1, which will give you the last item. Hope this helps.
Regards