Starting here? This lesson is part of a full-length tutorial in using SQL for Data Analysis. Check out the beginning.
BETWEEN is a logical operator in SQL that allows you to select only rows that are within a specific range. It has to be paired with the
AND operator, which you'll learn about in a later lesson. Here's what
BETWEEN looks like on a Billboard Music Chart Dataset:
SELECT * FROM tutorial.billboard_top_100_year_end WHERE year_rank BETWEEN 5 AND 10
BETWEEN includes the range bounds (in this case, 5 and 10) that you specify in the query, in addition to the values between them. So the above query will return the exact same results as the following query:
SELECT * FROM tutorial.billboard_top_100_year_end WHERE year_rank >= 5 AND year_rank <= 10
Some people prefer the latter example because it more explicitly shows what the query is doing (it's easy to forget whether or not
BETWEEN includes the range bounds).
SQL IS NULL