Question

my table have several records which has the same MemberID. i want to result out only one record.

select DISTINCT(MemberID)  from AnnualFees;

then result will come. but i want to show the other column data also but when i do this

select DISTINCT(MemberID),StartingDate,ExpiryDate,Amount  from AnnualFees;

all the details including same MemberID data also displaying.

can someone help me.

Answer 1

Assuming you just want any row at random for each memberid than you can do this:

select memberid, this, that, theother
from
(
select memberid, this, that, theother,
       row_number() over (partition by memberid order by this) rn
from   annualfees
)
where rn = 1;

If you wanted a specific row per memberid, e.g. the one with the most recent StartDate then you could modify it to:

select memberid, this, that, theother
from
(
select memberid, this, that, theother,
       row_number() over (partition by memberid order by StartDate desc) rn
from   annualfees
)
where rn = 1;