엑셀보다 쉬운, SQL 1주차 > 기본적인 코딩 Select from, Where, Between and, like 등 :)
Group by~, Select by ~, Min, Max, Avg, Sum, Round, ~As ~
select ~ from ~ / inner join ~ on ~ = ~ / where ~ / group by ~ / order by ~ / ~ union all ~
with table1 as (Select ~, ~, (Case when point > 100 then '굳' when point > 50 then '낫밷' else '힘' end) as msg from ~