Need to find max value of id, and by this value I need to read value of others column. But it is influenced by another column type. I used this sql command:
"SELECT * FROM Table WHERE id = (SELECT MAX(id) FROM Table WHERE type = 1)"
ID column is bigint type, and type is nchar. I tried use it with type = '1' too, but same problem. Error is after "id = " section
Thanks for reply
EDIT:
SqlCeCommand com = new SqlCeCommand();
if (LocalType == '1') { com = new SqlCeCommand("SELECT req_id FROM Requisition WHERE id = (SELECT MAX(id) FROM Requisition WHERE type = 1)", con); }
else if (LocalType == '2') { com = new SqlCeCommand("SELECT req_id FROM Requisition WHERE id = (SELECT MAX(b.id) FROM Requisition AS b WHERE b.type <> 1)", con); }
using (com)
{
SqlCeDataReader reader = com.ExecuteReader();
}
The easiest way to do this is using top
. If this is your real code, then you need to "escape" the word "table" because it is a reserved word:
select top 1 t.*
from [table] t
where type = '1'
order by id desc