Question

I have a table like the following table:

UserID  Num1    Num2    Code    Name    Cat
7293    32:16.0 50:22.0 3   Jim 33
7293    32:16.0 59:28.0 4   Jim 12
7316    32:16.0 55:32.0 4   Karen   33
7316    32:16.0 28:31.0 4   Karen   7
7287    32:16.0 01:27.0 2   Mike    33
7299    32:16.0 18:53.0 4   Sue 16
7302    32:17.0 54:54.0 4   Bill    28
7302    32:17.0 01:26.0 4   Bill    10
7302    32:17.0 01:26.0 3   Bill    32

and I am trying to select unique rows. I need the output to be this:

UserID  Num1    Num2    Code    Name    Cat
7293    32:16.0 50:22.0 3   Jim 33
7316    32:16.0 28:31.0 4   Karen   7
7287    32:16.0 01:27.0 2   Mike    33
7299    32:16.0 18:53.0 4   Sue 16
7302    32:17.0 54:54.0 4   Bill    28

I am no SQL expert so any help would be greatly appreciated.

I tried using a SELECT statement with DISTINCT, but that only gives me one column, I need the entire row. If I put multiple fields in the SELECT with the DISTINCT it returns all the rows.

Thanks for the assistance.

Ok, to answer some of the replies I recieved:

1) I have tried many queries, but all based around:
SELECT DISTINCT UserID FROM MyTable
SELECT DISTINCT * FROM MyTable
SELECT DISTINCT UserID, Num1, Num2, Code, Name, Cat FROM MyTable

Again, I am not a SQL Expert and everything I read about DISTINCT there is no real example of whatI need.

2) However, reading the replies gave me a thought, since I really only need a few columns, such as UserID, Name,

Can I use DISTINCT and specify those columns only? Hmm, I wil give it a try.

3) I am not sure what the Min, Max stuff is in the replies, but I will try it and hopefully in the process gain a better understanding of the SQL syntax.

Thanks again for the help.

Answer 1

you need to aggregate the fields you don’t want to group on, like:

select UserID,  min(Num1),  min(Num2), min(Code), min(Name), max(Cat)
from tbl
group by userID