如何在 MySQL 中对末尾的特定值进行排序?
mysqlmysqli database
为此，您可以使用 ORDER BY。让我们创建一个表 −
mysql> create table demo57 −> ( −> id int not null auto_increment primary key, −> full_name varchar(20) −> ); Query OK, 0 rows affected (1.60 sec)
使用 insert 命令向表中插入一些记录 −
mysql> insert into demo57(full_name) values('John Smith');
Query OK, 1 row affected (0.24 sec)
mysql> insert into demo57(full_name) values('David Miller');
Query OK, 1 row affected (0.13 sec)
mysql> insert into demo57(full_name) values('Not Known');
Query OK, 1 row affected (0.13 sec)
mysql> insert into demo57(full_name) values('Chris Brown');
Query OK, 1 row affected (0.31 sec)
使用 select 语句显示表中的记录 −
mysql> select *from demo57;
这将产生以下输出 −
+----+--------------+ | id | full_name | +----+--------------+ | 1 | John Smith | | 2 | David Miller | | 3 | Not Known | | 4 | Chris Brown | +----+--------------+ 4 rows in set (0.00 sec)
以下是在最后对特定值进行排序的查询。
mysql> select *from demo57 −> order by(full_name="Not Known"),full_name desc;
这将产生以下输出 −
+----+--------------+ | id | full_name | +----+--------------+ | 1 | John Smith | | 2 | David Miller | | 4 | Chris Brown | | 3 | Not Known | +----+--------------+ 4 rows in set (0.00 sec)
