how to fetch the last record from table

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how to fetch the last record from table when there is no primary key and unique column
only we know the table name and colunm name.

example
table name=employee
column name=emp_id,emp_name,sal.

Posted 3-Mar-13 22:59pm

maan_k

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Comments

Maciej Los 4-Mar-13 5:18am

emp_id is not primary key and unique column?

[no name] 4-Mar-13 5:21am

Maan_k ... Do you have unique values in emp_id column ?

Tadit Dash (ତଡିତ୍ କୁମାର ଦାଶ) 4-Mar-13 5:36am

If the emp_id is not unique, then why you are keeping it as a column in this table.
No use of it, right ?

4 solutions

Solution 1

SQL

select TOP 1 * from [employee] order by empID desc

Posted 3-Mar-13 23:12pm

sandeep207

Updated 3-Mar-13 23:16pm

v6

Comments

[no name] 4-Mar-13 5:20am

Your answer is good, but in question he told that he don't have any unique valued column.

Solution 3

Hi,

Try to Use WITH and ROW_NUMBER() FUNCTION as follows

SQL

WITH employeeDtls(Row_Number,emp_id,emp_name,sal)
AS
(   SELECT ROW_NUMBER() OVER(ORDER BY emp_id) 'Row_Number',emp_id, emp_name,sal 
    FROM employee 
) 
SELECT emp_id, emp_name,sal  FROM employee 
WHERE Row_Number = (SELECT COUNT(emp_id) FROM employee)

Regards,
GVPrabu

Posted 3-Mar-13 23:20pm

gvprabu

Updated 3-Mar-13 23:22pm

v4

Solution 2

SQL

with cte 
as 
(select empid,empname,sal,
row_number() over(order by empid) as rows
)
select empid,empname,sal
from cte
group by empid,empname,sal
having rows= max(rows)

Posted 3-Mar-13 23:18pm

Arun1_m1

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Costica U · Accepted Answer · 2013-03-04T01:50:00

Try this

SQL

select  *
from    (
        SELECT  row_number() over(order by BogusRowOrder) as RowNum,
                count(*)     over()            as RowCnt,
                *
        from    (
                SELECT  1 as BogusRowOrder,
                        *
                FROM    employee
                ) as a
        ) as b
where   RowNum = RowCnt