MySQL:是否可以使用ORDER BY按特定字母订购查询?
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我想要做的是订购我的查询,以便结果显示找到的每一行,但是通过显示首先以字母“D”开头的结果来排序.这可能与ORDER BY有关吗?我知道我可以使用WHERE字段LIKE’D%’,但我希望所有结果不仅仅是那些带有D.
我的查询目前看起来如下:
SELECT pname, pdescription, price FROM products WHERE manufacturer = 3 ORDER BY pname ASC
解决方法:
看看下面的例子
DROP TABLE IF EXISTS products;
create table products(pname CHAR(30),pdescription CHAR(30),price DECIMAL(10,2),manufacturer CHAR(30));
INSERT INTO products VALUES
('Toys','These are toys',15.25,'ABC'),
('Dolls','These are Dolls',35.25,'PQR'),
('DustPan','These are DustPan',75.25,'AZD'),
('Doors','These are Doors',175.25,'RAZD'),
('TV','These are TV',11175.25,'RAZD'),
('Bed','These are Bed',1175.25,'ARAZD');
/** Check all data **/
SELECT * FROM products;
+---------+-------------------+----------+--------------+
| pname | pdescription | price | manufacturer |
+---------+-------------------+----------+--------------+
| Toys | These are toys | 15.25 | ABC |
| Dolls | These are Dolls | 35.25 | PQR |
| DustPan | These are DustPan | 75.25 | AZD |
| Doors | These are Doors | 175.25 | RAZD |
| TV | These are TV | 11175.25 | RAZD |
| Bed | These are Bed | 1175.25 | ARAZD |
+---------+-------------------+----------+--------------+
6 rows in set (0.00 sec)
/** Order by D% **/
SELECT
pname, pdescription, price
FROM
products
ORDER BY
CASE
WHEN pname LIKE 'D%' THEN 1
ELSE 2
END;
+---------+-------------------+----------+
| pname | pdescription | price |
+---------+-------------------+----------+
| Dolls | These are Dolls | 35.25 |
| DustPan | These are DustPan | 75.25 |
| Doors | These are Doors | 175.25 |
| Toys | These are toys | 15.25 |
| TV | These are TV | 11175.25 |
| Bed | These are Bed | 1175.25 |
+---------+-------------------+----------+
6 rows in set (0.00 sec)
标签:mysql,select,order-by 来源: https://codeday.me/bug/20190806/1599655.html