只问耕耘
分类: Oracle
2010-04-23 16:26:37
The BETWEEN condition allows you to retrieve values within a range.
The syntax for the BETWEEN condition is:
SELECT columns
FROM tables
WHERE column1 between value1 and value2;
This SQL statement will return the records where column1 is within the range of value1 and value2 (inclusive). The BETWEEN function can be used in any valid SQL statement - select, insert, update, or delete.
Example #1 - Numbers
The following is an SQL statement that uses the BETWEEN function:
SELECT *
FROM suppliers
WHERE supplier_id between 5000 AND 5010;
This would return all rows where the supplier_id is between 5000 and 5010, inclusive. It is equivalent to the following SQL statement:
SELECT *
FROM suppliers
WHERE supplier_id >= 5000
AND supplier_id <= 5010;
Example #2 - Dates
You can also use the BETWEEN function with dates.
SELECT *
FROM orders
WHERE order_date between to_date ('2003/01/01', 'yyyy/mm/dd')
AND to_date ('2003/12/31', 'yyyy/mm/dd');
This SQL statement would return all orders where the order_date is between Jan 1, 2003 and Dec 31, 2003 (inclusive).
It would be equivalent to the following SQL statement:
SELECT *
FROM orders
WHERE order_date >= to_date('2003/01/01', 'yyyy/mm/dd')
AND order_date <= to_date('2003/12/31','yyyy/mm/dd');
Example #3 - NOT BETWEEN
The BETWEEN function can also be combined with the NOT operator.
For example,
SELECT *
FROM suppliers
WHERE supplier_id not between 5000 and 5500;
This would be equivalent to the following SQL:
SELECT *
FROM suppliers
WHERE supplier_id < 5000
OR supplier_id > 5500;
In this example, the result set would exclude all supplier_id values between the range of 5000 and 5500 (inclusive).