Question

Not very proficient with SQL. I am trying to get username, count number of login attempts and the last date of login attempt from a database table. The table schema is something like this:

username character varying,
logindate timestamp,
result character varying,
clientip character varying

I was able to get the username and number of attempts from the following query:

SELECT USERNAME, COUNT(USERNAME) FROM LOGINTABLE GROUP BY USERNAME

Is it possible to get the date for last login from the same query? Please advice.

DB Used: POSTGRESQL

Answer 1

yes, use MAX()

SELECT  USERNAME, 
        COUNT(USERNAME) AS TotalCount, 
        MAX(logindate) AS LastLoginDate
FROM    LOGINTABLE 
GROUP   BY USERNAME