swh-source/src/kr/co/swh/lecture/database/functions.sql

select count(*) from items;
select avg(hourly_pay) from employees;
select sum(price) from items;
select max(hourly_pay) from employees;
select min(price) from items;
select now();
select name, length(name) from employees;
select name, round(hourly_pay,1) from employees;