如何在单个MySQL查询中对GROUP BY进行ORDER BY FIELD？
为此，让我们首先创建一个表-
mysql> create table DemoTable ( Message text );
使用插入命令在表中插入一些记录-
mysql> insert into DemoTable values('Good');
mysql> insert into DemoTable values('Bye');
mysql> insert into DemoTable values('Awesome');
mysql> insert into DemoTable values('Bye');
mysql> insert into DemoTable values('Good');
mysql> insert into DemoTable values('Amazing');
mysql> insert into DemoTable values('Awesome');
mysql> insert into DemoTable values('Bye');使用select语句显示表中的所有记录-
mysql> select *from DemoTable;
这将产生以下输出-
+---------+ | Message | +---------+ | Good | | Bye | | Awesome | | Bye | | Good | | Amazing | | Awesome | | Bye | +---------+ 8 rows in set (0.00 sec)
以下是在单个MySQL查询中使用GROUPBY对ORDERBYFIELD的查询-
mysql> select *from DemoTable group by Message order by field(Message,'Amazing','Awesome','Good','Bye');
这将产生以下输出-
+---------+ | Message | +---------+ | Amazing | | Awesome | | Good | | Bye | +---------+ 4 rows in set (0.04 sec)
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