how SELECT people within age range [duplicate]

Answer 1

since I do not know the SQL dialect you use I take the full variant

since age is now - birth (!)

select * from people where
    current date - date(birth) > MINAGE
    and
    current date - date(birth) < MAXAGE

current date depends on SQL you are using

Answer 2

Since age is relative to today:

select * from people where 
date_sub(curdate(), interval 40 year)  =< dob
and date_sub(curdate(), interval 18 year) >= dob

This will work on any version of mysql

Answer 3

You have to calculate 40 years ago from today, and 18 years ago from today. Let's say it was 1940-01-01 and 1980-01-01, then it would be:

WHERE dob BETWEEN '1940-01-01' AND '1980-01-01';

Answer 4

SELECT column_name(s)
FROM table_name
WHERE column_name BETWEEN value1 AND value2;

Answer 5

You need to use BETWEEN with some year calculation TIMESTAMPDIFF(YEAR,'1980-02-04',NOW())

SELECT * FROM people WHERE TIMESTAMPDIFF(YEAR,`dob`,NOW()) BETWEEN  18 AND 40

See fiddle here

TIMESTAMPDIFF

YEAR(date)