sql select max number from table

Question

1.91/5 (4 votes)

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I have tabe1 contains column3 which is NVARCHAR

I need to select the highest number in column3 and show it in a textbox

Posted 7-Nov-15 4:50am

Ahmed Zoeil

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Comments

Gautham Prabhu K 7-Nov-15 10:57am

If its a number why your storing it as NVARCHAR? and not as integer.

PIEBALDconsult 7-Nov-15 11:04am

There are no numbers is a VARCHAR.

Maciej Los 9-Nov-15 14:05pm

Number is a number and string is a string. String representation of number is not a number.

3 solutions

Solution 2

SELECT MAX(COLUMN3) FROM TABLE1

IF THE COLUMN CONTAINS NUMBER THEN, IT WILL SHOW THE MAX NUMBER

Posted 8-Nov-15 23:52pm

ranjan jena

Solution 3

SqlConnection con=new SqlConnection("//Connectionpath");
SqlCommand cmd=new SqlCommand();
SqlDataAdapter ada=new SqlDataAdapter();
DataTable dt=new Datatable();

cmd.Connection=con;
cmd.CommandText="SELECT MAX(COLUMN3) FROM TABLE1";
ada.SelectCommand=cmd;
ada.Fill(dt);

if(dt.Rows.Count>0)
{
textBox.Text = dt.Rows[0]["COLUMN3"].ToString();
}

Posted 9-Nov-15 3:01am

Kochathu Thomas Tinu

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Krunal Rohit · Accepted Answer · 2015-11-07T04:59:00

SQL Query:
select MAX(Column3) from table1

C#

DataTable table = new DataTable();
using (SqlConnection connection = new SqlConnection("ConnectionString"))
{
    using (SqlCommand cmd = new SqlCommand("select MAX(Column3) from table1", connection))
    {
        using (SqlDataAdapter adapter = new SqlDataAdapter(cmd))
        {
            adapter.Fill(table);
            textBox.Text = table.Rows[0].ToString();
        }
    }
}

http://www.w3schools.com/sql/sql_func_max.asp[^]
http://www.tutorialspoint.com/sql/sql-max-function.htm[^]

Using C# to connect to and query from a SQL database[^]
https://msdn.microsoft.com/en-us/library/fksx3b4f.aspx[^]

-KR