insert into user 1 "user1" "user1@example.com" 10
insert into user 2 "user2" "user2@example.com" 20
insert into user 3 "user3" "user3@example.com" 30
insert into user 4 "user4" "user4@example.com" 40
insert into user 5 "user5" "user5@example.com" 45
select sum(age) from user where age >= 20 and name != "user4"
select sum(age) from user where age < 30 or age > 40
.exit
