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MySQL查询排序值大于零的行？

2024-04-26 14:41:03 413

让我们首先创建一个表。以下是查询-

mysql> create table gettingAndOrderingRowsDemo
   -> (
   -> Id int NOT NULL AUTO_INCREMENT PRIMARY KEY,
   -> Value int
   -> );

以下是使用insert命令在表中插入一些记录的查询-

mysql> insert into gettingAndOrderingRowsDemo(Value) values(10);

mysql> insert into gettingAndOrderingRowsDemo(Value) values(13);

mysql> insert into gettingAndOrderingRowsDemo(Value) values(0);

mysql> insert into gettingAndOrderingRowsDemo(Value) values(20);

mysql> insert into gettingAndOrderingRowsDemo(Value) values(30);

mysql> insert into gettingAndOrderingRowsDemo(Value) values(60);

mysql> insert into gettingAndOrderingRowsDemo(Value) values(0);

mysql> insert into gettingAndOrderingRowsDemo(Value) values(45);

mysql> insert into gettingAndOrderingRowsDemo(Value) values(0);

以下是使用select语句显示表中所有记录的查询-

mysql> select * from gettingAndOrderingRowsDemo;

这将产生以下输出-

+----+-------+
| Id | Value |
+----+-------+
| 1  | 10    |
| 2  | 13    |
| 3  | 0     |
| 4  | 20    |
| 5  | 30    |
| 6  | 60    |
| 7  | 0     |
| 8  | 45    |
| 9  | 0     |
+----+-------+
9 rows in set (0.00 sec)

以下是要查询的大于零的值-

mysql> select * from gettingAndOrderingRowsDemo
-> order by Value=0,Value;

这将产生以下输出-

+----+-------+
| Id | Value |
+----+-------+
| 1  | 10    |
| 2  | 13    |
| 4  | 20    |
| 5  | 30    |
| 8  | 45    |
| 6  | 60    |
| 3  | 0     |
| 7  | 0     |
| 9  | 0     |
+----+-------+
9 rows in set (0.00 sec)

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MySQL查询排序值大于零的行？

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