how to fetch missed name from another table

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hi , every one:
i am using a attendance concept in my windows application, one table is have all name in the concern all details are filled by admin. Another table is filled by entry of employee in to company. now i have to seperate presented list and absented list.
i am showing 2 different gridview, 1 for present and another one for absent,
i am using a query in presented table:

conn.Open();
            DataTable dtusers = new DataTable();
            
            SqlDataAdapter da = new SqlDataAdapter("select name,tdate,timein from daily_att where tdate='"+tdat+"' ", conn);

            SqlCommandBuilder cmd = new SqlCommandBuilder(da);
            da.Fill(dtusers);
            grd_pres_rep.DataSource = dtusers;
            grd_pres_rep.AutoResizeColumns(DataGridViewAutoSizeColumnsMode.AllCells);
            conn.Close();

now how can i list out absented employee in my second gridview?

Posted 10-May-13 2:57am

srigates

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CHill60 10-May-13 9:20am

Whichever solution below you choose please consider using parameterized queries to protect yourself from sql injection attacks. They also make your code neater and more efficient. http://www.dotnetperls.com/sqlparameter[^]

2 solutions

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Prasad CM · Answer 1 · 2013-05-10T03:09:00

try like this ..

conn.Open();
DataTable dtusers = new DataTable();
            
SqlDataAdapter da = new SqlDataAdapter("select name from admin_table where name not in (select name from daily_att where tdate='"+tdat+"' ) ", conn);
 
SqlCommandBuilder cmd = new SqlCommandBuilder(da);
da.Fill(dtusers);
grd_absent_rep.DataSource = dtusers;
grd_absent_rep.AutoResizeColumns(DataGridViewAutoSizeColumnsMode.AllCells);
conn.Close();

Samresh.ss · Answer 2 · 2013-05-10T03:11:00

Solution 2

Use:

select * from master_table where id not in (select id from daily_att);

where id is the primary key for the tables

Posted 10-May-13 3:11am

Samresh.ss

Comments

srigates 11-May-13 1:33am

it not working

srigates 11-May-13 1:41am

select Emp_name from nat_emp_det where Emp_name not in (select name from daily_att )