Does sql between include both ends?

In SQL, the BETWEEN operator is used to select values ​​within the data range between two values. Among them, "between and" includes boundary values, that is, including both ends; "not between" does not include boundary values.

SQL BETWEEN operator

The BETWEEN operator selects data between two values value within the range. These values ​​can be numeric, text, or dates.

The BETWEEN operator is usually used in conjunction with AND as the WHERE condition of the query result set.

SQL BETWEEN syntax

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

Example:

Data table

+----+--------------+---------------------------+-------+---------+
| id | name         | url                       | alexa | country |
+----+--------------+---------------------------+-------+---------+
| 1  | Google       | https://www.google.cm/    | 1     | USA     |
| 2  | 淘宝          | https://www.taobao.com/   | 13    | CN      |
| 3  | PHP中文网      | http://www.php.cn/    | 4689  | CN      |
| 4  | 微博          | http://weibo.com/         | 20    | CN      |
| 5  | Facebook     | https://www.facebook.com/ | 3     | USA     |
| 7  | stackoverflow | http://stackoverflow.com/ |   0 | IND     |
+----+---------------+---------------------------+-------+---------+

The following SQL statement selects all websites with alexa between 1 and 20:

SELECT * FROM Websites
WHERE alexa BETWEEN 1 AND 20;

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