Alternative for group by

Question

Hi guys i need some help with the logic. As an example, i have table with Account and product columns. So each Account can have multiple products. Now i need SQL to see Accounts that have only Product.
One way of doing it is by doing a groupby and having count(Account) =1. I need an alternative for this. Please help me with your ideas. Thanks in advance.

Answer 1

Alberto Faenza wrote:
Is there any reason why you don't want to use group by or just your curiosity to find alternatives?Simple case would be: "I need to select everything from account table where account has multiple products". And between:
SELECT  *
  FROM  YOUR_TABLE
  WHERE ACCOUNT IN (
                    SELECT  ACCOUNT,
                      FROM  YOUR_TABLE
                      GROUP BY ACCOUNT
                      HAVING COUNT(*) > 1
/and
SELECT  *
  FROM  (
         SELECT  ACCOUNT,
                 COUNT(*) OVER(PARTITION BY ACCOUNT) CNT
           FROM  YOUR_TABLE
  WHERE CNT > 1
/I prefer the latter.
SY.